A transition arrangement (100) comprising a first conductive layer (110), a second conductive layer (120), and a third conductive layer (130) in a stacked layer configuration. The first conducive layer (110) comprises a first ridge (111) arranged along a first waveguiding path, and a first metamaterial structure (113) arranged along a perimeter of the first waveguide path. The second conducive layer (120) comprises a second ridge (121) arranged along a second waveguiding path, and a second metamaterial structure (123) arranged along a perimeter of the second waveguide path. The third conductive layer (130) is arranged in between the first and the second conductive layers (110,120). The third conductive layer comprises respective planar surfaces facing the first and the second first metamaterial structures (113,123), respectively. The third conductive layer comprising an aperture (131) arranged in connection to the first and the second ridges (111,121) to couple electromagnetic waves between the first and the second ridges. The first and/or the second ridge (111,121) comprises a respective ridge matching section (112,122) in connection to the aperture (131) and preferably facing the aperture.
An antenna arrangement (100) having a layered configuration comprising a slot layer (130) comprising one or more slot layer apertures (131), and a distribution layer (120) facing the slot layer. The distribution layer is arranged to distribute two radio frequency, RF, signals to the one or more slot layer apertures (131). The distribution layer comprises a distribution layer feed (121) and at least one first waveguide (122) arranged to guide the RF signals between the distribution layer feed and the one or more slot layer apertures (131). The first waveguide (122) is a dual mode ridge waveguide comprising two parallel ridges (123) arranged on the distribution layer (120) and along the first waveguide, where the two ridges are arranged in proximity to each other to support two modes.
H01Q 15/00 - Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
H01Q 21/24 - Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
3.
AN ADAPTER ARRANGEMENT FOR AUTOMATED CHARACTERIZATION OF ANTENNAS
An adapter arrangement (100) for automated characterization of an antenna under test, AUT, (120) with a plurality of radiation elements (123, 124). The adapter arrangement (100) comprises a plate (110) with a first side (111) and a second side (112), and two or more waveguides (115) extending through the plate (110). Each waveguide has a first aperture (113) arranged on the first side (111) of the plate and a second aperture (114) arranged on the second side (112) of the plate. The second apertures (114) are arranged to mate with respective groups of radiation elements (123) of the AUT (120), where a group comprises one or more radiation elements. The first apertures (113) are arranged to mate with a first probe (130) with a first probe aperture (131). At least one of the first apertures (113) and/or the first probe aperture (131) is surrounded by a metamaterial structure (116).
An array antenna (100) having a layered configuration. The array antenna comprises a radiation layer (110) comprising a plurality of radiation elements (111) and a distribution layer (120) facing the radiation layer. The distribution layer is arranged to distribute a radio frequency, RF, signal to the plurality of radiation elements. The distribution layer comprises at least one distribution layer feed (121) and at least one first waveguide (122) arranged to guide the RF signal between at least one distribution layer feed and at least one radiation element. The array antenna further comprises at least a second waveguide (130) connected to at least one distribution layer feed (121). Any of the first (122) and the second (130) waveguides comprises plastics with a first type of surface treatment (313), where the first type of surface treatment comprising metallization. At least one radiation element is a dummy element terminated by an attenuation section, where the attenuation section is arranged on any of the waveguides (122, 130) connected to the dummy element and that comprises plastics. The attenuation section comprises a second type of surface treatment (314) arranged to attenuate the RF signal.
An antenna arrangement (100) comprising a radiation layer (110) comprising a first slot (111) and a second slot (112) extending along a first slot axis (D3) and second slot axis (D4), respectively, where the first and the second slots are arranged in a column (115) extending along a column axis (D5), and where the slot axes are arranged at respective non-zero third and fourth angles (a3, a4) with respect to the column axis; and a distribution layer (120) facing the radiation layer (110), comprising a first ridge waveguide comprising a first ridge (121) and a second ridge waveguide comprising a second ridge (122), wherein waveguiding paths (201, 202) of the first and second waveguides are configured to match respective shapes of the first and second ridges. A first section (123) of the first ridge (121) facing the first slot (111) extends along a first ridge axis (D1) and a second section (124) of the second ridge (122) facing the second slot (112) extends along a second ridge axis (D2), where the ridge axes are arranged at respective non-zero first and second angles (a1, a2) with respect to the column axis, where the first and second angles (a1, a2) are configured to match the third and fourth angles (a3, a4), respectively.
An antenna element (100) for an array antenna. The antenna element having a layered configuration comprising a first ground plane (151), a first dielectric layer (140) facing the first ground plane (151), a first planar radiation element (131) facing the first dielectric layer (140), and a feeding via hole (132) arranged electrically connected to the first planar radiation element (131) and arranged extending through the first dielectric layer (140) and through the first ground plane (151) without electrical contact. The antenna element further comprises at least one complementary set comprising a complementary dielectric layer (120) and a complementary planar radiation element (111) facing the complementary dielectric layer. The set is arranged stackable facing the first planar radiation element (131) such that a complementary dielectric layer is arranged between two radiation elements (111, 131) in the layered configuration. The first planar radiation element (131) constitutes a first continuous part of a spiral antenna and the at least one complementary planar radiation element (111) constitutes a continuation of the spiral antenna, thereby the first and the at least one complementary planar radiation elements (111, 131) constitute an effective spiral antenna.
An antenna arrangement (100) having a stacked layered structure. The antenna arrangement comprises a radiation layer (110) having a surface (113). The surface (113) is delimited by a surface boundary (115). A first (111) and a second slot (112) extend along a first slot axis (D3) and second slot axis (D4), respectively, and are arranged on the surface. The antenna arrangement also comprises a distribution layer (120) facing the radiation layer (110). The distribution layer (120) is arranged to distribute a radio frequency signal to the first (111) and second slots (112). The distribution layer (120) comprises a distribution layer feed (122) and a ridge (121) arranged to form a first ridge waveguide intermediate the distribution layer (120) and the radiation layer (110). The ridge (121) comprises a first section (124) connected to a second section (125) via a curved section (123). The first section (124) extends along a first ridge axis (D1) and the second section (125) extends along a second ridge axis (D2) different from the first ridge axis (D1). The first slot (111) is arranged facing the first section (124) with the first slot arranged offset (A1) from the first ridge axis (D1) in a direction towards the second ridge axis (D2). The second slot (112) is arranged facing the second section (125) with the second slot arranged offset (A2) from the second ridge axis (D2) in a direction towards the first ridge axis (D1).
G01S 7/03 - RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES - Details of systems according to groups , , of systems according to group - Details of HF subsystems specially adapted therefor, e.g. common to transmitter and receiver
An antenna arrangement (100) having a stacked layered structure. The antenna arrangement comprising a radiation layer (110) comprising one or more radiation elements (111), and a distribution layer (120) facing the radiation layer (110). The distribution layer (120) is arranged to distribute a radio frequency signal to the one or more radiation elements (111). The distribution layer (120) comprises at least one distribution layer feed (224). Any of the distribution layer (120) and the radiation layer (110) comprises a first electromagnetic bandgap, EBG, structure (121) arranged to form at least one first waveguide intermediate the distribution layer (120) and the radiation layer (110). The first EBG structure is also arranged to prevent electromagnetic radiation in a frequency band of operation from propagating from the at least one first waveguide in directions other than through the at least one distribution layer feed (224) and the one or more radiation elements (111). The radiation layer (110) and the distribution layer (120) are attached to each other with one or more fastening members (101) comprising respective deformable tails (102).
H01Q 13/20 - Non-resonant leaky-waveguide or transmission-line antennas; Equivalent structures causing radiation along the transmission path of a guided wave
H01Q 15/00 - Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
H01P 11/00 - Apparatus or processes specially adapted for manufacturing waveguides or resonators, lines, or other devices of the waveguide type
An antenna arrangement (100) having a stacked layered structure. The antenna arrangement comprises a radiation layer (110) comprising one or more radiation elements (111), and a distribution layer facing the radiation layer (110). The distribution layer is arranged to distribute a radio frequency signal to the one or more radiation elements (111). The distribution layer comprises at least one distribution layer feed and a first electromagnetic bandgap, EBG, structure arranged to form at least one first waveguide intermediate the distribution layer and the radiation layer (110). The first EBG structure is also arranged to prevent electromagnetic propagation in a frequency band of operation from propagating from the at least one first wave guide in directions other than through the at least one distribution layer feed and the one or more radiation elements (111). The distribution layer comprises a plurality of distribution modules (121) and a positioning structure (122), wherein the positioning structure (122) is arranged to fix the distribution modules (121) in position.
H01Q 13/20 - Non-resonant leaky-waveguide or transmission-line antennas; Equivalent structures causing radiation along the transmission path of a guided wave
H01Q 15/00 - Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
An antenna arrangement (100) suitable for a vehicle radar transceiver. The antenna arrangement comprises a radiating layer (105) having a surface (110), the surface delimited by a surface boundary (115). One or more apertures (120) are arranged on the surface. The antenna arrangement further comprises one or more surface current suppressing members (130) arranged on the surface. The one or more surface current suppressing members are arranged to suppress a surface current from an aperture to the surface boundary. The one or more surface current suppressing members comprise one or more grooves.
An antenna element (100) for an ultra-wideband circularly polarized planar array antenna. In an example embodiment, the antenna element comprises a stacked substrate layer structure, wherein a first substrate (160) comprises a radiating element (161), a second substrate (140) comprises a ground plane (141) and a transmission line arrangement (131), and a third substrate (120) comprises an electromagnetic bandgap, EBG, structure (110,121,122). The EBG structure and the transmission line arrangement may optionally form one or more inverted planar transmission line wave guides. The radiating element may comprise a bold-C spiral radiation element, suitable for millimeter-wave band operation.
An antenna array with a layered structure comprising a base layer with a metamaterial structure; a printed circuit board (PCB) layer; a feed layer arranged on the opposite side of the PCB from the RF IC(s); and a radiating layer arranged on the feed layer comprising a plurality of radiating elements, wherein the metamaterial structure is arranged to attenuate electromagnetic radiation propagating between the at least two adjacent waveguides in the frequency band.
H01P 3/00 - Waveguides; Transmission lines of the waveguide type
H01P 3/123 - Hollow waveguides with a complex or stepped cross-section, e.g. ridged or grooved waveguides
H01Q 3/24 - Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the orientation by switching energy from one active radiating element to another, e.g. for beam switching
A measurement device (100) for measuring antenna characteristics of an antenna under test (150, AUT), the AUT having a radiating element (160), the measurement device (100) comprising an exterior surface (110), where a measurement aperture (120) is formed in the exterior surface, and a repetitive structure (130) is arranged on the exterior surface, the repetitive structure (130) comprising a plurality of protruding conductive elements (135) arranged to surround the measurement aperture (120) and to define a passage (140) into the measurement aperture (120), the repetitive structure (130) being configured to attenuate electromagnetic signal propagation in a frequency band past the repetitive structure (130) while allowing propagation via the passage (140).
A microstrip to waveguide transition comprising a waveguide module and a section of printed circuit board (PCB). The waveguide module comprises a waveguide aperture and a repetitive structure, the waveguide aperture being arranged extending through the module for attaching a waveguide to an external side of the module, the repetitive structure comprising a plurality of protruding elements arranged to surround the waveguide aperture on an internal side of the module and to define a passage into the waveguide aperture on the internal side, wherein the repetitive structure is configured to attenuate electromagnetic signal propagation in a frequency band past the repetitive structure while allowing propagation via the passage, the transition further comprising a PCB with a patch antenna connected to a transmission line and arranged to face the passage into the waveguide aperture.
A high frequency filter comprising a waveguide and at least one resonant cavity is disclosed. The waveguide is a so-called gap waveguide, and comprises a metal or metallized base layer, a lid arranged in parallel with said metal or metallized baser layer, a waveguiding structure in the form of a ridge, a groove or a microstrip line, and an artificial magnetic conductor arranged on said base layer, between the baser layer and the lid, and arranged aligned with said waveguding structure to prevent waveguide propagation along other directions than along said waveguide structure. The filter further comprises at least one resonant cavity arranged within said baser layer, and extending essentially perpendicular to a plane of said baser layer. The filter may e.g. be used in a phased array antenna.
The present invention relates to a transition arrangement (10;) for interconnection of waveguide structures or waveguide flanges (1,2) for forming a waveguide twist, wherein a waveguide twist section arrangement comprising a number of waveguide twist sections (3)is arranged between the waveguide structures or waveguide flanges (1,2) for rotating the polarization of waves or signals twisted or forming an angle with an adjacent waveguide flange and/or another adjacent waveguide twist section with respective waveguide openings. The or each twist section (3) on at least one side comprises a surface of a conductive material with a periodic or quasi-periodic structure formed by a number of e.g. protruding elements (35) allowing waves to pass across a gap between a surface around a waveguide opening to another waveguide opening in a desired direction or waveguide paths, at least in an intended frequency band of operation, and to stop propagation of waves in the gap in other directions, such that the connection or connections between the waveguide structures or waveguide flanges (1,2) and the twist section arrangement (3) is/are contactless. It is arranged to form a waveguide twist with an arbitrary rotation angle smaller than or equal to +/-180°, and comprises three or fewer waveguide twist sections (3), a respective cavity (34) being provided between each waveguide opening in a waveguide twist section (3) and/or waveguide structure or waveguide flange (1,2) and the surrounding periodic or quasi- periodic structure of the respective waveguide twist section (3) and/or waveguide structure or waveguide flange (1,2), hence introducing compensating capacitances to compensate for inductances introduced at the twist section interfaces.
A phased array is disclosed, comprising: a base layer comprising a substrate with a plurality of protruding posts, for stopping wave propagation along the base layer, and a printed circuit board (PCB) arranged on the base layer, and comprising at least one phased array radio frequency (RF) integrated circuit (IC) on a first side of the PCB facing the base layer and the protruding posts. The PCB further comprises feeds for transferring of RF signals from the phased array RF IC(s) to an opposite second side of the PCB. A radiating layer, comprising a plurality of radiating elements for transmitting and/or receiving RF signals from the phased array antenna is also provided, together with a feeding layer for transfer of RF signals, arranged between the feeds of the PCB on the second side and the radiating elements of the radiating layer.
H01Q 9/28 - Conical, cylindrical, cage, strip, gauze or like elements having an extended radiating surface; Elements comprising two conical surfaces having collinear axes and adjacent apices and fed by two-conductor transmission lines
18.
A TRANSITION ARRANGEMENT, A TRANSITION STRUCTURE, AND AN INTEGRATED PACKAGED STRUCTURE
The present invention relates to a transition arrangement (10) comprising a first transmission line (2) being a planar transmission line comprising a coupling section (3) and being disposed on a dielectric substrate layer (11). The substrate layer (11) comprises or is provided with a periodic or quasi-periodic structure (15), e.g. an EBG (Electronic Band Gap) structure or an AMC (Artificial Magnetic Conductor) surface arranged in the substrate layer (11) such as to be disposed along at least part of the first transmission line (2) and to partly surround the coupling section (3). The transition arrangement further comprises a conducting layer (12) on which the substrate layer (11) is arranged and which is adapted to act as a ground plane, and the periodic or quasi-periodic structure (15) is so arranged and at such a distance from the first transmission line and/or the coupling section (3) that EM energy, RF power, can be coupled contactlessly between the first transmission line (2) and the periodic or quasi-periodic structure (15), the transition between the first transmission line (2)and the periodic or quasi-periodic structure (15) being planar and contactless without any galvanic contact.
The present invention relates to a bowtie antenna arrangement (100) comprising at least one bowtie structure comprising bowtie arm sections (2A1,2A2) made of an electrically conducting material with each an end portion (2Α',2Α') facing an end portion of another bowtie arm section, a base portion (1A) comprising a conducting ground plane, the bowtie structure being connected to a feeding arrangement. The bowtie arm sections (2A1,2A2) are planar, made of a conducting sheet or plate element and are arranged in a bowtie arm section plane located in parallel with, at a first distance (d1) from a first side of the base portion (1A), the, or each, bowtie arm structure being connected to a feeding port on a second side of the base portion (1A). In parallel with, and at a second distance (d2) from the bowtie arm section plane a conducting capping arrangement (4A) is provided in a plane located on a side of the bowtie arm sections opposite to the side at which the base portion (1 A) is located which comprises a cap (4 A) located above the one another facing bowtie end portions (2Α',2Α') of the bowtie arm sections (2A1,2A2) of the bowtie structure in a substantially symmetric or centralized manner with respect to the bowtie end portions.
H01Q 9/28 - Conical, cylindrical, cage, strip, gauze or like elements having an extended radiating surface; Elements comprising two conical surfaces having collinear axes and adjacent apices and fed by two-conductor transmission lines
H01Q 19/24 - Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using a secondary device in the form of a single substantially straight conductive element the primary active element being centre-fed and substantially straight, e.g. H-antenna
H01Q 25/00 - Antennas or antenna systems providing at least two radiating patterns
H01Q 21/24 - Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
H01Q 5/30 - Arrangements for providing operation on different wavebands
The present invention relates to a packaging structure (100)comprising a split-block assembly with a first and a second conducting block section (10A,20A) and at least one transition between a first planar transmission line (2A) and a second transmission line (11A), and one or more input/output ports. The first transmission line (2A) is arranged on a substrate, e.g. an MMIC (1A), disposed on the first conducting block section (10A) and comprises a coupling section (3A), the first conducting block (10A) comprises a cavity (4A) with a cavity opening in an upper surface of the first conducting block section (10A) so arranged that,in an assembled state of the split-block assembly,the coupling section (3A) will be located above, or in,the opening of the cavity (4A), the second transmission line (11A) being in line with the first transmission line (2A) and located on an opposite side of the opening of the cavity (4A).The second conducting block section (20A) acts as a lid in an assembled state of the packaging structure. One of the conducting block sections is provided with a high impedance surface (15A)in a transition region along or facing the first (2A) and second (11A) transmission lines, a narrow gap being provided between the high impedance surface region (15A) and the opposing surface of the other conducting block section (10A)at least in the transition region such that the transition will be contactless without any galvanic contact between the first and second transmission lines(2A,11A).
The present invention relates to a arrangement (100) for interconnection of waveguide structures (10,20) or components comprising a number of waveguide flange adapter elements (100) comprising a surface of a conductive material with a periodic or quasi-periodic structure (15) formed by a number of protruding elements (115) arranged or designed to allow waves to pass across a gap between a surface around a waveguide opening (3) to another waveguide opening in a desired direction or waveguide paths, at least in an intended frequency band of operation, and to stop propagation of waves in the gap in other directions. It comprises means allowing interconnection with a waveguide flange or another waveguide flange adapter element without requiring electrical or conductive contact and assuring that the gap is present between the at least one surface (15) formed by periodically or quasi-periodically arranged protruding elements (115) and a surface around a waveguide opening of the other waveguide flange (20), hence assuring that the surface (15) formed by the periodically or quasi-periodically arranged protruding elements (115) is not in direct mechanical contact with the other, opposite, interconnecting, waveguide flange (20).
The present invention relates to a self-grounded bowtie antenna arrangement (10) comprising an antenna structure (11) comprising a number of antenna petals (1, 1) comprising arm sections tapering towards a respective end tip portion (6,6) and being made o fan electrically, conducting material, the end tip portions (6,6) being arranged to approach a base portion (9) on a first side thereof and to be connected to feeding ports, a specific port being provided for each antenna petal(1,1). The base portion (9) comprises a conducting ground plane or a Printed Circuit Board (PCB), and each antenna petal(1,1)is made in one piece from a metal sheet or similar, and it is adapted to be fabricated as separate units (9), and to be mountable onto a front or back side of the base portion or ground plane(9) by means of surface mounting. The ground plane may be a Printed Circuit Board (PCB), meaning that the bowties can be mounted by automatic placement and soldering machines. Placement machines are more commonly known as pick-and-place machines.
H01Q 9/26 - Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole with folded element or elements, the folded parts being spaced apart a small fraction of operating wavelength
H01Q 1/36 - Structural form of radiating elements, e.g. cone, spiral, umbrella
23.
A SELF-GROUNDED SURFACE MOUNTABLE BOWTIE ANTENNA ARRANGEMENT, AN ANTENNA PETAL AND A FABRICATION METHOD
The present invention relates to a self-grounded bowtie antenna arrangement (10) comprising an antenna structure (11) comprising a number of antenna petals (1,1) comprising arm sections tapering towards a respective end tip portion (6,6) and being made of an electrically, conducting material, the end tip portions (6,6) being arranged to approach a base portion (9) on a first side thereof and to be connected to feeding ports, a specific port being provided for each antenna petal (1,1). The base portion (9) comprises a conducting ground plane or a Printed Circuit Board (PCB), and each antenna petal (1,1) is made in one piece from a metal sheet or similar, and it is adapted to be fabricated as separate units (9), and to be mountable onto a front or back side of the base portion or ground plane (9) by means of surface mounting. The ground plane may be a Printed Circuit Board (PCB), meaning that the bowties can be mounted by automatic placement and soldering machines. Placement machines are more commonly known as pick-and-place machines.
H01Q 9/26 - Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole with folded element or elements, the folded parts being spaced apart a small fraction of operating wavelength
H01Q 1/36 - Structural form of radiating elements, e.g. cone, spiral, umbrella
24.
WAVEGUIDES AND TRANSMISSION LINES IN GAPS BETWEEN PARALLEL CONDUCTING SURFACES
A microwave device is based on gap waveguide technology, and comprises two conducting layers (101, 102) arranged with a gap there between, and protruding elements (103, 104) arranged in a periodically or quasi-periodically pattern and fixedly connected to at least one of said conducting layers, thereby forming a texture to stop wave propagation in a frequency band of operation in other directions than along intended waveguiding paths. Sets of complementary protruding elements are either each formed in said pattern and arranged in alignment and overlying each other, the complementary protruding elements of each set forming part of the full length of each protruding element of the pattern, or the sets of complementary protruding elements are arranged in an offset complementary arrangement, the protruding elements of one set thereby being arranged in between the protruding elements of the other set.
The present invention relates to a high frequency package (100) comprising acircuit arrangement (30) and a waveguide structure in which said circuit arrangement(30) is arranged. The waveguide structure comprises a split-block assembly comprising a first waveguide block portion (10) and a second waveguide block portion (20) comprising at least one waveguide port. Said circuit (30) is provided in or on one of said waveguide block portions (10), and a blocking arrangement (22) is provided in the other waveguide block portion (20) such as to face the circuit arrangement (30) in an assembled or mounted state of the split-block assembly for preventing leakage of undesired waveguide modes into the circuit (30). It further comprises at least one probe integrated with or into the circuit arrangement(30)on the same substrate and forming a waveguide-to-microstrip transition (11,12) between the circuit arrangement (30) and said at least one waveguide.
The present invention relates to a calibration arrangement (100) for calibration of an analysing or measuring instrument, e.g. a Vector Network Analyzer. It comprises a number of calibrator connector elements (20A, 20B) allowing an analysing or measuring instrument to be connected thereto. It further comprises a plate element (10) comprising a plurality of calibration waveguide structures (111, 112, 113, 114, 115). The plate element (10) is provided with conductive surfaces (12) and each calibrator connector element (20A, 20B), and/or the conductive surface of the plate element, comprise(s) a surface with a periodic structure (27), and they are so disposed with respect to one another that a gap (29) is formed there between, and a waveguide interface is formed allowing interconnection of a calibrator connector element (20A, 20B) waveguide (23), connected to a waveguide (33) of an analysing or measuring instrument, with a calibration waveguide structure (111, 112, 113, 114, 115). It further comprises a driving unit (13) and a control function (14) for controllably moving the plate element (10) and/or the calibrator connector element (20A, 20B), hence allowing automatic connection of the calibrator connector element (20A, 20B) to different calibration waveguide structure (111, 112, 113, 114, 115).
A method and apparatus for producing an RF part of an antenna system, e.g. for use in communication, radar or sensor applications, is disclosed, as well as thereby producible RF parts. The RF part has at least one surface provided with a plurality of protruding elements. In particular, the RF part may be a gap waveguide. The protruding elements are monolithically formed and fixed on a conducting layer, and all protruding elements are connected electrically to each other at their bases via the conductive layer. The RF part is produced by providing a die having a plurality of recessions forming the negative of the protruding elements of the RF part. Particularly, the die may be a multilayer die, having several layers, at least some having through-holes to form the recessions. A formable piece of material is arranged on the die, and pressure is applied, thereby compressing the formable piece of material to conform with the recessions of the die.
A radio frequency (RF) part of an antenna system, e.g. for use in communication, radar or sensor applications, is disclosed, as well as a method for producing such a part. The part comprises: a first conducting layer; a plurality of monolithic waveguide elements, each having a base and protruding fingers extending up from the base, arranged to form a waveguide along the first conducting layer; and a second conducting layer arranged on top of the first conducting layer, so that a gap is formed between the first and second conducting layers, thereby providing gap waveguides. The protruding fingers of the waveguide elements form a set of periodically or quasi-periodically arranged protruding elements forming a texture to stop wave propagation in a frequency band of operation in other directions than along intended waveguiding paths. This RF part is easy to manufacture, e.g. using pick-and-place equipment, and allows flexible design of passive and active networks, e.g. using combinations of various waveguide elements as building blocks.
A microwave device, such as a waveguide, transmission line, waveguide circuit, transmission line circuit or radio frequency (RF) part of an antenna system, is disclosed. The microwave device comprises two conducting layers arranged with a gap there between, and a set of periodically or quasi-periodically arranged protruding elements fixedly connected to at least one of said conducting layers, thereby forming a texture to stop wave propagation in a frequency band of operation in other directions than along intended wave guiding paths, thus forming a so-called gap waveguide. All protruding elements are connected electrically to each other at their bases at least via the conductive layer on which they are fixedly connected, and some or all of the protruding elements are in conductive or non-conductive contact also with the other conducting layer.A corresponding manufacturing method is also disclosed.
A quasi-planar array antenna for transmitting or receiving electromagnetic waves is disclosed. The antenna comprises elements being in the form of slots that extends in H-plane from one side of the array to the other and being limited at both ends by sidewalls, and being located side-by-side to form a planar radiating aperture. The slots are fed in such a way that one or more directive beams are radiating vertically or almost vertically from said planar radiating aperture. A feeding arrangement and/or power distribution arrangement may be realized by means of parallel-plate-type waveguides, and preferably incorporating gapwave technology.
H01Q 19/13 - Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave the primary radiating source being a single radiating element, e.g. a dipole, a slot, a waveguide termination
The present invention relates to a self-grounded antenna arrangement (10) comprising a base or central portion (5) arranged in a first plane and a number of arm sections (1,2,3,4) associated with said central portion (5), which taper towards a respective end tip. It comprises an electric conducting material, each arm section being adapted to form a transition from the central portion and being bent backwards towards the central portion by more than 180° so that its end tip approaches a first side of the central portion, at an opening therein. The end tip is connected to feeding means for feeding via an arm section specific port, one specific port ( 111, 112,113; 114;) for each arm section. Each arm section (1,2,3,4) comprises a mixed functionality of a curved monopole antenna and a loop antenna, and the antenna arrangement provides substantially uncoupled ports with far field functions that are almost orthogonal in polarization, direction or shape. The invention is in particular intended for use in MIMO antenna systems for statistical multipath environments.
H01Q 1/36 - Structural form of radiating elements, e.g. cone, spiral, umbrella
H01Q 9/26 - Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole with folded element or elements, the folded parts being spaced apart a small fraction of operating wavelength
A microwave/millimeter device having a narrow gap between two parallel surfaces of conducting material by using a texture or multilayer structure on one of the surfaces is disclosed. The fields are mainly present inside the gap, and not in the texture or layer structure itself, so the losses are small. The microwave/millimeter wave device further comprises one or more conducting elements, such as a metallized ridge or a groove in one of the two surfaces, or a metal strip located in a multilayer structure between the two surfaces. The waves propagate along the conducting elements. At least one of the surfaces is provided with means to prohibit the waves from propagating in other directions between them than along the ridge, groove or strip. At very high frequency, the gap waveguides and gap lines may be realized inside an IC package or inside the chip itself. Conventional machining such as, but not limited to: drilling, milling and sawing, cannot define the structures with the precision required of devices between 100 GHz and 10 THz. To obtain the high precision required, microsystem manufacturing methods such as deep reactive etching can be used to define the structures with high precision. Alternative fabrication methods such as injection molding or other micromolding process may also be used. A metal layer can cover some or all surfaces.
The present invention represents a new, way of packaging passive and active microwave circuits, and in particular circuits involving microstrip transmission lines and similar substrate bound transmission lines. The circuits are located between two conducting surfaces, one of these surface may be the ground plane of the microwave circuit, and at least one of these surfaces are provided with conducting elements formed as angular or curved conducting lines arranged on substrates. The conducting lines may e.g. have a zigzag shape. The two surfaces may form the bottom and lid of a cavity with conducting sidewalls. The conducting elements may with advantage be arrange in a periodic grid, and create together with the ground plane of the microwave circuit board or the smooth metal plane below the microwave circuit board a stop band for waves propagating between the lid with conducting elements and the ground plane. Thereby, cavity resonances are avoided or suppressed that otherwise create a big problem associated with the packaging in metal boxes with smooth metal walls.
An improved eleven antenna is disclosed, comprising a conducting body acting as a ground plane; and at least one pair of log-periodic dipole arrays arranged above the ground plane, the dipoles of said pair of log-periodic arrays of dipoles forming dipole pairs of parallel and oppositely located dipoles of the same dimensions and arranged in such a way that the geometrical centres of each of said dipole pairs and their images in the ground plane are coinciding,wherein each dipole is a folded dipole comprising two or more parallel or nearly parallel conducting strips that are connected at one or more points or over an extended part of the conducting strips. Further, a plurality of the folded dipoles, within each of said log-periodic dipole array, being closer to said geometrical centre are extending in a first plane, and wherein the remaining at least one folded dipole being located most far away from said geometrical centre is arranged to extend in at least one additional plane, said additional plane(s) forming an angle relative to said first plane. Hereby,a more compact antenna is achieved.
H01Q 19/10 - Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
H01Q 21/24 - Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
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