EP2345099B1 - Circuit d'entrée d'antenne à guide d'onde - Google Patents

Circuit d'entrée d'antenne à guide d'onde Download PDF

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Publication number
EP2345099B1
EP2345099B1 EP08875982.4A EP08875982A EP2345099B1 EP 2345099 B1 EP2345099 B1 EP 2345099B1 EP 08875982 A EP08875982 A EP 08875982A EP 2345099 B1 EP2345099 B1 EP 2345099B1
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EP
European Patent Office
Prior art keywords
waveguide
antenna front
end according
ghz
port
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EP08875982.4A
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German (de)
English (en)
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EP2345099A1 (fr
Inventor
Benjamin M. Engel
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Panasonic Avionics Corp
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Panasonic Avionics Corp
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/20—Frequency-selective devices, e.g. filters
    • H01P1/213—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/20—Frequency-selective devices, e.g. filters
    • H01P1/219—Evanescent mode filters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P5/00—Coupling devices of the waveguide type
    • H01P5/12—Coupling devices having more than two ports
    • H01P5/16—Conjugate devices, i.e. devices having at least one port decoupled from one other port
    • H01P5/18—Conjugate devices, i.e. devices having at least one port decoupled from one other port consisting of two coupled guides, e.g. directional couplers
    • H01P5/181—Conjugate devices, i.e. devices having at least one port decoupled from one other port consisting of two coupled guides, e.g. directional couplers the guides being hollow waveguides
    • H01P5/182—Conjugate devices, i.e. devices having at least one port decoupled from one other port consisting of two coupled guides, e.g. directional couplers the guides being hollow waveguides the waveguides being arranged in parallel

Definitions

  • the present invention in some embodiments thereof, relates to a radio frequency (RF) antenna front end front end, and, more particularly, but not exclusively, to an RF waveguide module which incorporates multiple RF components.
  • RF radio frequency
  • Waveguide (WG) components Some RF signal processing is performed using waveguide (WG) components. These waveguide components are often provided with protruding flanges which serve for connecting the separate components together. These flanges may protrude several centimeters from the rest of the component, increasing the size of a system formed by connecting multiple components together by their flanges. Waveguide components connected by flanges typically require integration after the components are connected together.
  • some microwave components such as waveguide filters, include tuning screws. These tuning screws are used to adjust the electrical properties of the waveguide modules within a filter (e.g. by changing the electrical admittance of a post or iris) in order to obtain the required performance, and to compensate for production tolerances.
  • a system formed from components with tuning screws generally requires tuning to electrically match the system components after they are connected together, in addition to tuning the separate system components, which may be a time-consuming and tedious process.
  • a diplexer in US Pat. Appl. Publ. by 2007/0139135 Ammar et al. a diplexer includes a diplexer housing having transmit and receive waveguide channels formed within. A septum insert is placed between the diplexer housing and cover.
  • Embodiments of the present invention relate to an antenna front end, which is formed as a continuous channel within a material block.
  • Current manufacturing techniques enable the formation of such a front end which meets the required specifications for satellite communications.
  • the front end includes two diplexers which are formed within a single block of material. Each diplexer is formed as continuous channel within the material block.
  • the diplexer includes adjoined and matching a T-Junction (i.e. splitter), receive band filter and transmit band filter.
  • the two diplexers are adjoined and matched in an antenna front end configuration, as described in detail below.
  • the channel within the material block may be covered by a lid which completes the waveguide structure of the front end.
  • An additional advantage in some embodiments is that the components may be connected without a join or break in the material. This may reduce reflection and impedance mismatch between the components.
  • inventions of the present invention relate to an integrated RF waveguide module (denoted herein an RF module) which forms adjoining waveguide components as a channel or channels in a single block of material.
  • the RF module is formed as a single block of material, with an interior channel or channels shaped into RF components which perform processing of a waveguide signal.
  • the channels are adjoined and matched to form a continuous waveguide channel.
  • the RF signal may thus be processed by multiple waveguide components within a single material block.
  • the channel is machined out of a block of aluminum.
  • the accuracy obtainable with current manufacturing processes enables the manufacture of a waveguide device in which incorporates RF components without tuning screws.
  • the benefit of avoiding tuning screws is the elimination of component tuning from the manufacturing process, and that no additional integration is required between the various components incorporated into the waveguide device.
  • an antenna front end defining with channels within a single material block: a first diplexer which includes a first coupler, a first transmit band filter and a first receive band filter, adjoined and matched to form a first continuous waveguide channel; and a second diplexer which includes a second coupler, a second transmit band filter and a second receive band filter, adjoined and matched to form a second continuous waveguide channel.
  • each of the diplexers further includes a respective RF port formed in the material block, and configured as an RF port to a respective T-Junction.
  • each of the T-Junction is configured to convey an RF signal from a respective transmit band filter for output by a respective RF port, and to convey an RF signal input from a respective RF port to a respective receive band filter.
  • the antenna front end further includes a receive hybrid coupler defined with a channel within the material block, and adjoined and matched to the first and second receive band filters.
  • the antenna front end further includes a transmit hybrid coupler defined with a channel within the material block, and adjoined and matched to the first and second transmit band filters.
  • At least one of the filters is non-tunable.
  • both of the diplexers are for passive processing of an RF signal.
  • the antenna front end further includes a lid adapted to adjoin to the material block so as to form a waveguide cavity.
  • the antenna front end further includes at least one waveguide to coax adapter.
  • the front end is configured for operation over at least 20% of a frequency band of 10.7 GHz to 14.5 GHz.
  • the front end is configured for reception over at least a portion of a frequency band of 10.7 GHz to 12.75 GHZ, and is configured for transmission over at least a portion of a frequency band of 14.0 GHz to 14.5 GHZ.
  • At least one of the filters includes a channel with two bends, so as to reduce a required dimension of the material block.
  • the waveguide channels are coated with an electrically conductive material.
  • At least a portion of the waveguide channels is filled with a dielectric material.
  • all of the waveguide channels are filled with a dielectric material.
  • the antenna front end is formed of pressure-molded dielectric material coated with an electrically conductive material.
  • the antenna front end is formed of machined dielectric material coated with an electrically conductive material.
  • the present invention in some embodiments thereof, relates to an antenna front end, and, more particularly, but not exclusively, to an RF waveguide module which incorporates multiple RF components.
  • the present embodiments present an antenna front end which includes multiple waveguide components within a single block of material.
  • a smaller-dimensioned front end is, without flanges connecting between the components located within the block.
  • no connectors are required to transfer the RF signal between adjoining components within the block, possibly leading to improved signal performance.
  • the accuracy available in current manufacturing techniques may also eliminate the need for tuning screws in order to obtain the desired performance, and to save tuning time and measurement equipment cost. With no tuning required, reliability may be increased and maintenance costs reduced.
  • FIG. 1 Some of the figures described herein show views of RF components, including for example filters and couplers. These figures are for illustrative purposes, and are not shown to scale or to indicate the actual dimensions of the components unless explicitly so stated. Figures illustrating multiple components together or showing multiple views of same component are not necessarily indicative of the relative dimensions between the components and/or the different views.
  • the RF components may be shown in part, and may not show all portions therof, such as waveguide adaptors.
  • the term "component” denotes all or a substantial part of the component (or the named component), depending on the embodiment described.
  • the term substantial part means that the RF component part serves for RF processing of the signal.
  • a filter within the RF module may not include the connectors for signal input/output.
  • Types of waveguide components include filters, couplers, splitters, and other waveguide components capable of modifying and/or routing an RF signal.
  • FIG. 1 of the drawings For purposes of better understanding some embodiments of the present invention, as illustrated in FIG. 1 of the drawings, reference is first made to the construction and operation of antenna front end.
  • Front end 100 may be used for polarized transmission and reception, with frequency domain multiplexing, amongst other possible transmission/reception modes.
  • Front end 100 includes two diplexers, 110 and 120 and two hybrid couplers 150 and 160.
  • hybrid couplers 150 and 160 provide 3-dB quadrature (0°/90°) coupling.
  • Front end 100 optionally includes one or both of directional couplers 170 and 180, which serve as samplers (i.e. directional coupler) of the RF signals from the antenna.
  • Ports 1 and 2 each connect to a separate antenna.
  • Transmit (Tx) ports 3 and 4 input signals intended for transmission by the antennas.
  • Receive (Rx) ports 5 and 6 output signals received from the antennas through ports 1 and 2, after processing by front end 100.
  • Each diplexer includes a 3-dB quadrature (0°/90°) coupler and two bandpass filters.
  • diplexer 110 includes T-Junction 115, transmit BPF 130A and receive bandpass filter 140A.
  • Bandpass filters 130A and 140A separate the transmission and reception frequency ranges, so that the same antennas may be used simultaneously for transmission and reception.
  • Transmit (Tx) hybrid coupler 150 provides 0° and 90° coupling of the RF signals input from Tx port 3 and Tx port 4. The signals are input into transmit bandpass filters 130A and 130B and then output from Ports 1 and 2 respectively.
  • receive (Rx) hybrid coupler 160 provides 0° and 90° coupling of the RF signals received from the antennas at Ports 1 and 2, after they have been filtered by Rx bandpass filters 140A and 140B respectively.
  • Two waveguide diplexers are defined in a single block of material. Each of the diplexers is formed as an interior channel within the block. Each diplexer channel includes a waveguide T-Junction portion, a waveguide receive band filter portion and a waveguide transmit band filter portion. The portions are adjoined and matched to form a continuous waveguide channel. In some embodiments, the two diplexers are coupled together to provide an antenna front end formed as a single continuous channel within the material block.
  • Some embodiments of the present invention provide a waveguide antenna front end which is configured similarly to front end 100. Such embodiments may be suitable for use in conjunction with two orthogonally-polarized antennas, namely one horizontally polarized antenna and one vertically polarized antenna, in order to perform electronically-controlled polarization alignment of a mobile SATCOM antenna.
  • Another key function achievable in some embodiments of the front end is to separate between a high power transmitted signal and a low power received signal, thus utilizing the same antenna(s) simultaneously for transmission and reception.
  • Front end 200 is an RF module which defines two diplexers, 210 and 220, with channels within a material block. Diplexers 210 and 220 perform passive processing of RF signals.
  • Forming front end 200 as a continuous waveguide channel within a material block enables achieving a high level of integration, and consequently to reduced front end dimensions. Furthermore, the monolithic design may simplify the manufacturing process, reduce weight, and/or reduce manufacturing costs as compared to separate flanged waveguide components.
  • Front end 200 may be manufactured using CNC machining of an aluminum block.
  • the single-block construction eliminates the need for bulky waveguide flanges, and contributes to the compactness of the front end.
  • CNC machining is currently obtainable with a tolerance of +/- 0.01 mm. This tolerance eliminates the need for tuning screws in the front end, which also contributes to the compactness of the front end, and may reduce the system integration costs.
  • front end 200 is designed for operation over the entire frequency band of 10.7 GHz to 14.5 GHz.
  • the frequency band is divided into receive and transmit channels by the four bandpass filters.
  • front end 200 is designed for operation over at least 20% of the frequency band of 10.7 GHz to 14.5 GHz.
  • the receive bandwidth may be 10.7-12.75 GHz (e.g. 11.7-12.2 GHz)
  • the transmit bandwidth may be 14-14.5 GHz.
  • the receive bandwidth is a portion of the 10.7-12.75 GHz band
  • the transmit bandwidth is a portion of the 14-14.5 GHz band (e.g. 14.1-14.4 GHz).
  • Each of diplexers 210 and 220 includes a coupler, transmit band filter and receive band filter, which are adjoined and matched to form a continuous waveguide channel.
  • diplexer 210 includes T-Junction 215, transmit band filter 230A and receive band filter 240A.
  • some or all of filters 230A, 230B, 240A and 240B are non-tunable.
  • front end 200 include receive (Rx) quadrature hybrid coupler 260 and/or transmit (Tx) quadrature hybrid coupler 250, for coupling diplexers 210 and 220 as shown in FIG. 2 .
  • Rx quadrature hybrid coupler 260 is defined with channels within the material block, and is adjoined and matched to receive band filters 240A and 240B.
  • Tx quadrature hybrid coupler 250 is defined with channels within the material block, and is adjoined and matched to transmit band filters 230A and 230B.
  • At least one of the filters includes a channel with two bends, so as to reduce a required dimension of the material block.
  • each of Rx bandpass filters 240A and 240B is formed with two bends, which enables a more compact design.
  • a Ku-band bandpass filter with a bandwidth of 10.7 GHz to 12.75 GHZ, is formed as a channel within a portion of the material block of about 14 cm (L) x 12 cm (W) x 1 cm (H).
  • the length of a similar filter, with the same bandwidth but formed without a bend is approximately 20 cm.
  • front end 200 further includes two pairs of waveguide ports (i.e. waveguide interfaces), PORT 1-PORT 4, and one pair of waveguide to coax adapters for providing coaxial ports, PORT 5-PORT 6.
  • PORT 1 and PORT 2 serve as a main RF ports into T-Junctions 215 and 225 respectively.
  • Front end 200 may connect to the antennas at PORT 1 and PORT 2 by pressure, or may be attached by screws.
  • PORT 3 and PORT 4 are the RF ports of Tx Hybrid coupler 250.
  • PORT 5 and PORT 6 are the RF ports of Rx Hybrid coupler 260.
  • Front end 200 may further include at least one sampler (not shown), configured similarly to samplers 170 and 180 of FIG. 1 . When present, each sampler provides an additional pair of RF waveguide ports.
  • front end 200 includes a lid adapted to adjoin to the material block so as to form a waveguide cavity.
  • FIGS. 3 and 4 are simplified three-dimensional views of an exemplary top and bottom lid respectively, according to an embodiment of the present invention.
  • the lids are attached to front end 200 to form a closed waveguide channel within the block.
  • Lid 300 of FIG. 3 attaches directly to the block, and lid 310 of FIG. 4 attaches over lid 300.
  • Two waveguide samplers, 330A and 330B, are formed within the lids.
  • a Ku-band sampler is integrated into a 3 cm x 2 cm x 1.5 cm portion of the material block.
  • a typical waveguide sampler when purchased as a flanged waveguide component can be up to 30 cm x 8 cm x 4 cm (length x width x height).
  • a radio frequency (RF) waveguide module (denoted herein an RF module) includes at least parts of multiple waveguide components within a single material block. Each of the components is created as a waveguide channel within the block, with the channel shaped to create a component with the required performance. As shown in embodiments below, the channels for different components are adjoined in order to perform joint processing of the RF signal in series and/or in parallel. The resulting monolithic RF module may thus perform relatively complex RF signal processing, which otherwise requires multiple separate RF components connected together.
  • RF radio frequency
  • the RF module includes at least part of a waveguide filter and at least part of a waveguide coupler. Examples of RF modules with at least one filter and a coupler are shown in FIGS. 4-7B .
  • Types of filters may include bandpass, high-pass and low-pass filters.
  • Types of couplers may include a directional coupler, sampler, splitter, and hybrid coupler. Additionally, one or more RF ports and/or waveguide transformers may be formed in the material block.
  • Embodiments of the RF module may include one or more of: WG Hybrid Junction, WG Taper (slopped or stepped), Ortho Mode Transducer (OMT), WG Stepped Transformers (H-Plane or E-Plane type), WG Loads (i.e. Terminations), Finned WG (e.g. WG with fins), Single-Ridged WG, Double Ridged WG, WG Short, WG Switch, WG Phase Shifter, WG Polarizer, WG Dual Directional Coupler, Cross-Guide Coupler, Mode-Converters, WG Attenuator and WG Radiator (e.g. antenna cells).
  • WG Hybrid Junction WG Taper (slopped or stepped), Ortho Mode Transducer (OMT), WG Stepped Transformers (H-Plane or E-Plane type), WG Loads (i.e. Terminations), Finned WG (e.g. WG with fins), Single-Ridged WG, Double
  • tuning elements e.g. screws
  • tuning elements may be placed, for example, at a junction between components and/or on a waveguide post. However, by adjoining the components together rather than by connectors fewer tuning elements are possibly required.
  • the RF module includes a lid, or multiple layers of lids, which attach to the material block in order to form a waveguide cavity. Further embodiments incorporate a directional coupler as holes within the lid. Some embodiments include forming channels in the lid. The channels in the lid may be formed to align, all or in part, with the channels in the material block.
  • the channels defining the components may be coated, all or in part, with a conductive material such as silver, copper or gold.
  • the conductive coating may reduce the electrical loss of the component, and is selected to obtain the desired electrical conductivity, reducing or totally eliminating susceptibility to oxidization and manufacturing cost.
  • the channels may be filled, all or in part, with a dielectric material in order to reduce the required size of the RF module.
  • the front end is formed of pressure-molded dielectric material coated with an electrically conductive material. In other embodiments the front end is formed of machined dielectric material coated with an electrically conductive material.
  • Possible materials for the material block include aluminum and plastic.
  • Manufacturing techniques include machining, particularly computer numerically controlled (CNC) machining, Electrical Discharge Machining (EDM) 2) Stereolithography (3-D Layering) and pressure molding. The manufacturing technique is selected to obtain the desired accuracy, surface finish and manufacturing cost.
  • a channel forming a component includes a bend (e.g. the Rx bandpass filters of FIG. 2 ).
  • channels are formed on opposite sides of the block, and connected by via-holes (a.k.a. vias).
  • One or more waveguide to coax adapters may be formed in or externally connected to the RF module, possibly on the lid.
  • FIGS. 5A-6B show exemplary configurations of RF modules, each of which includes a filter and coupler.
  • the filter(s) and the coupler are adjoined and matched to form a continuous waveguide channel.
  • the RF signal may thus be filtered and coupled by the RF module without being output from one component and re-input into the second component.
  • a filter and coupler are arranged in series, for serial processing of a waveguide signal.
  • FIGS. 5A and 5B are simplified three-dimensional and top views respectively of an RF module, according to an exemplary embodiment of the present invention.
  • filter 510 and coupler 520 are arranged in series, so that the filtering and coupling functions may be performed in series without requiring the output and re-input of the RF signal.
  • FIGS. 6A and 6B are simplified three-dimensional and top views respectively of an RF module, according to a further exemplary embodiment of the present invention.
  • RF module 600 includes bandpass filter 610 and hybrid coupler 620, adjoined in series for serial processing of the RF signal.
  • bandpass filter 610 is a Ridged Waveguide Evanescent Mode Filter. Ridged waveguide evanescent mode filters typically have attractive features such as wide stopbands and compact size.
  • Hybrid coupler 620 is a Riblet short-slot coupler, and belongs to the family of 'H-plane slot 3 dB-couplers'. Such couplers provide close to equal power splitting, and are known for their high isolation, high return loss, and accurate 90 degree phasing over 15% bandwidth. By using several sections in tandem, the Riblet short-slot coupler features a usable bandwidth that can be stretched over a 20% bandwidth with accurate 90 degree phasing.
  • components of the RF module are arranged for parallel operation on a waveguide signal.
  • FIGS. 7A and 7B are simplified three-dimensional and top views respectively of an RF module, according to a fourth exemplary embodiment of the present invention.
  • RF module 700 includes two bandpass filters, 710 and 730, and hybrid coupler 720.
  • Hybrid coupler 720 may be used to split/combine RF signals shifted in phase, for polarized transmission/reception of an RF signal.
  • Filters 710 and 730 operate in parallel, filtering signals received from (or provided to) hybrid coupler 720.
  • the RF module includes additional waveguide components.
  • the RF module may include multiple filters and/or couplers. When additional waveguide components are incorporated into the RF module, more complex processing of the RF signal may be implemented.
  • An exemplary embodiment of the RF module of the present invention comprises a car transceiver operating in the millimeter wave frequency range.
  • An embodiment of a monolithic transceiver is manufactured by forming a conductively coated channel within a plastic block, resulting in a low-cost millimeter wave waveguide device.
  • the conductively coated channel is shaped as adjoined and matched RF waveguide components configured as a transceiver.
  • the embodiments described above integrate multiple RF waveguide components into a single RF module. This approach may be used to obtain a diplexer for separating a received RF signal into separate frequency bands.
  • An integrated antenna front end suitable for full duplex operation is also shown. The front end has low insertion loss and high isolation between transmit and receive.
  • the front end may be formed passive components, which do not include tuning devices (e.g. screws) and/or printed circuit boards (i.e. soft substrate with electrical conductors).
  • the term "about” refers to ⁇ .1 dB for insertion loss, and to ⁇ 6dB for isolation.
  • FIGS. 8-10 show simulated and measured levels of insertion loss and isolation obtained for an embodiment of a front end designed as shown in FIG. 1 .
  • the 3 dB splitting ratio in the Rx and Tx hybrid couplers is not considered as loss.
  • the Ku-band front end has a receive bandwidth of 10.7-12.75 GHz and a transmit bandwidth of 14-14.5 GHz. Measured results were obtained for a prototype manufactured using CNC machining.
  • the front end is a compact unit arranged in a flat planar design, which fits into an aluminum block of 27 cm x 11 cm x 1 cm. These dimensions, and specifically the 1 cm height, may not be achievable if standard waveguide flanges are incorporated in the assembly.
  • a typical waveguide flange (WR62) has a 3.2 cm x 3.2 cm cross section, so that the total front end height would be tripled if a WR62 flanged waveguide component were included.
  • FIG. 8 shows the insertion loss (measured and simulated) obtained between the main RF port and each of the reception ports. It is seen that an insertion loss of about 0.5 dB is obtained for both reception ports over the reception bandwidth of 10.7-12.75 GHz.
  • FIG. 9 shows the insertion loss (measured and simulated) obtained between the main RF port and each of the transmission ports. It is seen that an insertion loss of about 0.5 dB is obtained for both transmission ports over the transmission bandwidth of 14-14.5 GHz.
  • FIG. 10 shows the isolation (measured and simulated) obtained between a transmission port and a reception port. It is seen that an isolation of about -120 dB is obtained over the transmission bandwidth of 14-14.5 GHz.
  • losses of about 0.5 dB in the passband and an isolation of about 120dB between receive and transmit ports are demonstrated for both the simulated and the measured prototype front end.

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Claims (17)

  1. Circuit d'entrée d'antenne (100) définissant avec des canaux dans un bloc de matériau unique :
    un premier diplexeur (110), comprenant un premier coupleur (150), un premier filtre de bande d'émission (130A) et un premier filtre de bande de réception (140A), joints et adaptés pour former un premier canal de guide d'onde continu ; et
    un second diplexeur (120), comprenant un second coupleur (160), un second filtre de bande d'émission (130B) et un premier filtre de bande de réception (140B), joints et adaptés pour former un second canal de guide d'onde continu.
  2. Circuit d'entrée d'antenne selon la revendication 1, dans lequel chacun desdits diplexeurs comprend en outre un port RF respectif formé dans ledit bloc de matériau, et configuré comme port RF vers une jonction T respective (115).
  3. Circuit d'entrée d'antenne selon la revendication 2, dans lequel chacune de ladite jonction T est configurée pour acheminer un signal RF depuis un filtre de bande d'émission respectif (130A, 130B) en sortie par un port RF respectif, et acheminer un signal RF entrant depuis un port RF respectif dans un filtre de bande de réception respectif (140A, 140B).
  4. Circuit d'entrée d'antenne selon l'une quelconque des revendications 1 à 3, comprenant en outre un coupleur hybride de réception (160) défini avec un canal dans ledit bloc de matériau, et joint et adapté auxdits premier et second filtres de bande de réception.
  5. Circuit d'entrée d'antenne selon l'une quelconque des revendications 1 à 4, comprenant en outre un coupleur hybride d'émission (150) défini avec un canal dans ledit bloc de matériau, et joint et adapté auxdits premier et second filtres de bande d'émission.
  6. Circuit d'entrée d'antenne selon l'une quelconque des revendications 1 à 5, dans lequel au moins l'un desdits filtres n'est pas accordable.
  7. Circuit d'entrée d'antenne selon l'une quelconque des revendications 1 à 6, dans lequel lesdits diplexeurs servent tous les deux au traitement passif d'un signal RF.
  8. Circuit d'entrée d'antenne selon l'une quelconque des revendications 1 à 7, comprenant en outre un couvercle adapté pour rejoindre ledit bloc de matériau de manière à former une cavité de guide d'onde.
  9. Circuit d'entrée d'antenne selon l'une quelconque des revendications 1 à 8, comprenant en outre au moins un adaptateur guide-d'onde-coax.
  10. Circuit d'entrée d'antenne selon l'une quelconque des revendications 1 à 9, dans lequel ladite extrémité frontale est configurée pour fonctionner sur au moins 20% d'une bande de fréquences de 10,7 GHz à 14,5 GHz.
  11. Circuit d'entrée d'antenne selon l'une quelconque des revendications 1 à 10, dans lequel ledit circuit d'entrée est configuré pour recevoir sur au moins une partie d'une bande de fréquences de 10,7 GHz à 12,75 GHz, et est configuré pour transmettre sur au moins une partie d'une bande de fréquences de 14,0 GHz à 14,5 GHz.
  12. Circuit d'entrée d'antenne selon l'une quelconque des revendications 1 à 11, dans lequel au moins l'un desdits filtres comprend un canal à deux coudes, de manière à réduire une dimension requise dudit bloc de matériau.
  13. Circuit d'entrée d'antenne selon l'une quelconque des revendications 1 à 12, dans lequel lesdits canaux de guide d'onde sont revêtus d'un matériau électriquement conducteur.
  14. Circuit d'entrée d'antenne selon l'une quelconque des revendications 1 à 13, dans lequel au moins une partie desdits canaux de guide d'onde est remplie d'un matériau diélectrique.
  15. Circuit d'entrée d'antenne selon l'une quelconque des revendications 1 à 14, dans lequel tous lesdits canaux de guide d'onde sont remplis d'un matériau diélectrique.
  16. Circuit d'entrée d'antenne selon l'une quelconque des revendications 1 à 15, formé d'un matériau diélectrique moulé par pression revêtu d'un matériau électriquement conducteur.
  17. Circuit d'entrée d'antenne selon l'une quelconque des revendications 1 à 15, formé d'un matériau diélectrique usiné revêtu d'un matériau électriquement conducteur.
EP08875982.4A 2008-10-27 2008-10-27 Circuit d'entrée d'antenne à guide d'onde Active EP2345099B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IL2008/001414 WO2010049922A1 (fr) 2008-10-27 2008-10-27 Circuit d'entrée d'antenne à guide d'onde

Publications (2)

Publication Number Publication Date
EP2345099A1 EP2345099A1 (fr) 2011-07-20
EP2345099B1 true EP2345099B1 (fr) 2015-02-18

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CN103390784B (zh) * 2013-07-22 2015-06-17 电子科技大学 一种小型化基片集成波导双工器
US10374275B2 (en) * 2015-06-12 2019-08-06 Zte Corporation Pluggable receiver splitter for two-transmitter two-receiver microwave digital radios
CN105226363B (zh) * 2015-10-20 2017-12-01 上海航天测控通信研究所 一种相控阵天线定标系统的一体化波导网络
US10403956B2 (en) * 2016-10-04 2019-09-03 The Boeing Company Simplification of complex waveguide networks
US11726166B2 (en) * 2020-11-18 2023-08-15 Kabushiki Kaislia Toshiba Dual polar full duplex radar transceiver

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US20070139135A1 (en) * 2005-12-20 2007-06-21 Xytrans, Inc. Waveguide diplexer

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