56 results about "Wilkinson power divider" patented technology

The present invention belongs to the field of radar and communication technology, and relates to a two-dimensional active sum-difference network device and its preparation method. It comprises: four antenna subarrays, at least three four-channel amplitude-phase multifunction chips, and four 1-to-3 equal-power Wilkinson power dividers; the four antenna subarrays are distributed on the antenna array plane, with one antenna subarray corresponding to one quadrant of the antenna array plane; the four-channel amplitude-phase multifunction chip has four branch input ports and one combiner; the common end of one antenna subarray is connected to the common end of one of the one-to-3 equal-power Wilkinson power dividers; and one of the power-divided paths of each one-to-3 equal-power Wilkinson power divider is connected to each of the four branch input ports of the four-channel amplitude-phase multifunction chip. Through modular design and dynamic parameter configuration, the present invention achieves highly integrated, low-loss two-dimensional beamforming while supporting flexible expansion of the antenna subarrays.

Disclosed is an antenna having a plurality of radiator columns and an integrated phase shifter / calibration board. The radiator columns have radiator clusters that may be differentially phase to provide beam tilt. The input traces of each of the phase shifters is capacitively coupled to a Wilkinson power divider that sums the power of all the input signals, thereby providing a calibration function. The output traces of each of the phase shifters has a designated meander pattern that provides phase alignment for all the output signals to prevent phase mismatches between signals fed to the radiator clusters.

According to one embodiment, a Wilkinson power divider / combiner (WPDC) circuit includes a pair of first differential ports including a Vin+ port and a Vin− port, a pair of second differential ports including a Vout1+ port and a Vout1− port, and a pair of third differential ports including a Vout2+ port and a Vout2− port. The WPDC circuit includes a first transformer winding having a first end coupled to the Vin+ port and a second end coupled to the Vin− port, a second transformer winding having a first end as Vout1+ port and a second end as Vout1− port, the second transformer winding magnetically coupled to a first portion of the first transformer winding, and a third transformer winding having a first end as Vout2+ port and a second end as Vout2− port, the third transformer winding magnetically coupled to a second portion of the first transformer winding.

Disclosed is an antenna having a plurality of radiator columns and an integrated phase shifter / calibration board. The radiator columns have radiator clusters that may be differentially phase to provide beam tilt. The input traces of each of the phase shifters is capacitively coupled to a Wilkinson power divider that sums the power of all the input signals, thereby providing a calibration function. The output traces of each of the phase shifters has a designated meander pattern that provides phase alignment for all the output signals to prevent phase mismatches between signals fed to the radiator clusters.

The application belongs to the field of satellite mobile communication, and specifically provides a wide-beam metal-resistant antenna for satellite communication to overcome the problem that communication is interrupted under the interference of a metal environment for the existing satellite communication antenna. The application adopts a design of laminated slot coupling feed, improves the back and forward radiation of the antenna through a metal reflector plate and a forward radiation plate to improve the gain, generates 90 degrees of self-phase shift through a Wilkinson power divider, feeds a rotationally symmetrical "H" type slot at the same time, introduces a metal aluminum ring to pre-compensate the metal environment, reduces the influence of the surrounding metal floor on the antenna, and the metal reflector plate and the conductive metal aluminum ring together form a magnetic dipole, which is complementary to the directional diagram of the feed plate as an electrode to widen the lobe and improve the gain at a low elevation angle. Furthermore, the application has the advantages of wide beam, good low-elevation circular polarization performance and metal resistance, and is more suitable for satellite communication in actual scenarios.

The application provides a graphene nanosheet-based electrically tunable two-dimensional phased array linear array, which comprises an upper dielectric plate, a lower dielectric plate, a graphene nanosheet-based electrically tunable antenna array and a Butler matrix feed network; the graphene nanosheet-based electrically tunable antenna array comprises a plurality of graphene nanosheet-based electrically tunable sub-arrays and a metal ground plate, each graphene nanosheet-based electrically tunable sub-array comprises two rectangular patches and one Wilkinson power divider loaded with graphene nanosheets; the upper dielectric plate, the metal ground plate and the lower dielectric plate are sequentially stacked, and the Butler matrix feed network comprises four directional couplers, two 45° phase shifters, two cross junctions and two 0° phase shifters. The graphene nanosheet-based electrically tunable two-dimensional phased array linear array can simplify the feed network and reduce the cost of the phased array.

The invention discloses a reconfigurable broadband circularly polarized metasurface antenna based on liquid, which is composed of three parts of structures including a top metal metasurface layer, a middle liquid layer and a bottom feed source antenna part. The top-layer metal metasurface comprises a dielectric plate F4B and a radiation metal sheet; the middle liquid layer is of a hollow structure in which liquid can be injected, and the structure consists of a medium PDMS (Polydimethylsiloxane); the bottom feed source antenna sequentially comprises a metal grounding plate, a dielectric plate F4B and a Wilkinson feed network from top to bottom. Signals are input to the Wilkinson power divider from the microstrip line connected with the 50-ohm microstrip line, and are transmitted to the middle liquid layer and the top metal metasurface through the four coupling gaps on the metal grounding plate, and switching of radiation and scattering modes by the antenna is realized by switching liquid injected into the liquid layer.

Substantially equal mutual inductances between a primary coil and respective secondary windings of a secondary coil of a transformer with an integrated differential Wilkinson power divider or combiner help to ensure balanced outputs for the transformer. The primary coil and the secondary coil are substantially symmetric to provide a high coupling between the coils, and the secondary windings of the secondary coil are substantially symmetric to help provide the substantially equal mutual inductances. The secondary windings of the secondary coil cross over each other an equal number of times to further ensure balanced outputs for the transformer.

The invention discloses a TSV technology-based full-connection beam forming network miniaturization design method, and belongs to the technical field of wireless communication and radar systems, and the method comprises the steps: in the miniaturization process of equivalently replacing a transmission line into a T-type network, designing the T-type network through a transmission matrix analysis method based on the TSV technology, and obtaining a miniaturized transmission line; a miniaturized directional coupler, a Wilkinson power divider, an annular coupler and a T-shaped attenuator are designed; all the devices are assembled through transmission lines, and a network topology structure of the full-connection beam forming network is obtained; on the basis of a network topology structure, transmission lines of connecting devices are processed according to different layers by using a TSV technology, and a miniaturized full-connection beam forming network is obtained. According to the method, the problem of large circuit area occupied by a cross junction due to large area and high circuit complexity of a full-connection beam forming network device is solved, and the miniaturization design of the whole network is realized.

A power divider / combiner circuit may include a first port configured to receive a signal, a second port, and a third port. The circuit may include an unequal Wilkinson power divider / combiner circuit including a first node coupled to the first port, a second node coupled to the second port, and a third node. The unequal Wilkinson power divider / combiner circuit is configured to receive a signal at the first node and divide the signal to produce a first signal at the second node and a second signal at the third node. The circuit may include a configurable impedance transformation circuit coupled between the third node and the third port. The configurable impedance circuit is configured to provide a configurable phase shift and a configurable attenuation of the second signal to provide a selected power division ratio between the first signal at the second port and the second signal at the third port.

A substantially equal mutual inductance 120, 122, 520, 920 between a primary coil 114, 404, 514, 804, 914, 1104 and a respective secondary winding 116, 118, 516, 518, 519, 916, 918, 921, 923 of a secondary coil 308, 714, 10104 of a transformer 100, 400, 500, 800, 900, 1100 with an integrated differential Wilkinson power divider or combiner helps ensure that the transformer has a balanced output. The primary coil and the secondary coil are substantially symmetrical to provide high coupling between the coils, and the secondary windings of the secondary coil are substantially symmetrical to help provide the substantially equal mutual inductance. The secondary windings of the secondary coil cross each other for equal times to further ensure that the transformer has balanced output.

The present invention discloses a broadband circularly polarized pattern diversity antenna based on a metasurface unit. The antenna comprises a top metal layer, an upper dielectric layer, an intermediate metal layer, a lower dielectric layer, and a bottom metal layer arranged from top to bottom. The top metal layer is provided with a metasurface radiating array; the intermediate metal layer is provided with five cross-shaped slots; and the bottom metal layer contains two feeding networks: the feeding network for the first port comprises a microstrip line sequentially coupled feeding structure, and the feeding network for the second port comprises three Wilkinson power dividers and four microstrip line sequentially coupled feeding structures. By utilizing the four characteristic modes of the metasurface array and the sequentially coupled feeding structure, the present invention enables the antenna to radiate circularly polarized waves while achieving pattern diversity. This not only solves the problem of multipath interference in wireless communication systems, but also reduces the antenna profile height and broadens the antenna's operating bandwidth.

The invention discloses a non-uniform compression high-order mode four-arm helical antenna with enhanced beam width, which comprises a hollow dielectric cylinder and four helical arms printed on the outer surface of the hollow dielectric cylinder, and is characterized in that the bottom end of the hollow dielectric cylinder is connected with the upper surface of a circular dielectric substrate; the upper surface of the dielectric substrate is printed with a one-to-four Wilkinson power divider which has a 90-degree phase difference between adjacent ports, and the Wilkinson power divider is used as a feed network of the antenna. Non-uniform compression is carried out on the middle part of the three-time mode of the spiral arm, and the current mode is kept unchanged while the number of spiral turns is reduced; a section of straight line is added in the middle of each bent part, so that the coupling effect between the bent parts is reduced; the triple-mode spiral arms are non-uniformly compressed, so that the number of spiral turns is reduced, the half-power beam width is increased, the axial ratio width is not affected, the axial height of the antenna is reduced, and the miniaturization trend is met.

The invention provides a broadband one-to-many annular power divider. The broadband one-to-many annular power divider comprises a ceramic dielectric substrate, a tapped microstrip film transmission conductor strip line, an annular film resistor and a regular hexagon inner core interconnection microstrip film, the annular thin-film resistor is arranged in the center of the top surface of the ceramic dielectric substrate, the outer side of the annular thin-film resistor is connected with the tapped microstrip thin-film transmission conductor strip line, the inner side of the annular thin-film resistor is connected with the regular hexagonal inner-core interconnected microstrip thin-film, and the circle center of the annular thin-film resistor coincides with the center of the regular hexagonal inner-core interconnected microstrip thin-film; the tapped microstrip film transmission conductor strip line is connected with the annular film resistor, and the air cavity is located at the top of the ceramic dielectric substrate; compared with traditional Wilkinson power dividers, branch line bridge power dividers and Lange bridge power dividers, the broadband one-to-many annular power divider provided by the invention has the advantages that microwave products which aim at different frequency band matching sections, are small in size and can cover the C frequency band to the Ka frequency band of the Xian Academy in bandwidth do not exist, and the broadband one-to-many annular power divider can be directly applied as a standard circuit and is convenient and fast.

The invention provides a radio-frequency signal amplification circuit and electronic equipment, the radio-frequency signal amplification circuit comprises an amplifier and a Wilkinson power divider, a first port of the Wilkinson power divider is connected with the amplifier, a second port and a third port of the Wilkinson power divider are connected with the amplifier, and a third port of the Wilkinson power divider is connected with a fourth port of the Wilkinson power divider. One is connected with the 90-degree phase shifter and the filter in sequence, and the other one is connected with the filter and the 90-degree phase shifter in sequence.

The invention discloses a two-way type analog predistorter with an adjustable amplitude and phase. Comprising a first one-to-two Wilkinson power divider, a second one-to-two Wilkinson power divider in signal connection with the first one-to-two Wilkinson power divider, a first nonlinear generator in signal connection with the second one-to-two Wilkinson power divider, a second nonlinear generator and a phase adjustable control circuit, the three-in-one Wilkinson combiner is in signal connection with the first nonlinear generator, the second nonlinear generator and the phase adjustable control circuit; the two-in-one Wilkinson combiner is in signal connection with the three-in-one Wilkinson combiner; the amplitude adjustable control circuit is in signal connection with the two-in-one Wilkinson combiner; and the amplitude adjustable control circuit is in signal connection with a first one-to-two Wilkinson power divider. According to the power amplifier, the adjustability is improved through the amplitude adjustable control circuit and the phase adjustable control circuit, and good linearization is carried out on power amplifiers of different types and under different conditions.

A symmetric spiral configuration having portions of oppositely oriented negative traces (302, 1002) and positive traces (202, 902) provides a field cancellation effect in a Wilkinson power divider (100, 600, 700, 1100) (or combiner) wherein the magnetic field generated by the positive traces (202, 902) is substantially cancelled by the magnetic field generated by the negative traces (302, 1002). The geometry of the positive trace (202, 902) and the negative trace (302, 1002) is effective to produce an isolation inductor (126, 128, 626, 628, 632, 638, 642, 646, 726, 728, 732, 738, 742, 746). Some embodiments utilize a transformer (800) that includes a first positive input port (802) and a first negative input port (804), an amplifier (806), and a transformer (808) that includes an input shunt inductor (814) of the differential power divider as part of the transformer.

This invention provides a non-reciprocal power divider and an electromagnetic wave transmission device. The non-reciprocal power divider includes: a dielectric substrate; at least one Wilkinson power divider; the ports of the Wilkinson power divider serve as the radio frequency ports of the non-reciprocal power divider; the Wilkinson power divider is disposed on the top surface of the dielectric substrate, and each branch of the Wilkinson power divider includes a filter, the filter being composed of at least two resonators; the back surface of the dielectric substrate is provided with multiple varactor diodes, multiple signal feed circuits, multiple metallized vias, and multiple modulation ports; the modulation ports are used to receive modulation signals, each modulation port is connected to a metallized via through a signal feed circuit, one end of each varactor diode is connected to one end of a resonator through a metallized via, and the other end of each varactor diode is grounded. This invention achieves a non-reciprocal power divider without any magnetic material biasing, and has advantages such as integration with circuits.

A Wilkinson power divider is embedded in a multi-layer printed circuit board (PCB). In one example, the power divider is configured as an embedded coplanar waveguide with ground (CPWG) device. In another example, the embedded Wilkinson power divider is configured using striplines. In both examples, a resistive foil is used as the isolation resistor of the Wilkinson power divider. In some examples, the two arms of the Wilkinson power divider have semi-oval shapes. The device may be configured to provide a wide impedance bandwidth (e.g., in the range of 24-31 GHz) with minimal return loss and insertion loss. Cascaded configurations are also described herein.

Wilkinson power dividers (or combiners) include a first positive output terminal and a second positive output terminal connected to a positive trace in a first plane and a first negative output terminal and a second negative output terminal connected to a negative trace in a second plane spaced apart from the first plane, e.g., in different circuit layers, with minimal overlap and crossings of positive and negative portions of the traces near the midpoints of the traces. The positive and negative traces are substantially symmetric to one another, and cascading various ones of the power dividers disclosed herein enables implementation of N-way Wilkinson power dividers.

The present invention belongs to the technical field of antennas, and discloses a circularly polarized PSOAM array antenna, a control method, and a wireless communication system. The circularly polarized PSOAM array antenna adopts an integrated antenna and feeder structure, and is composed of a dielectric substrate and a coaxial cable feeder; wherein, on the upper surface of the dielectric board, 8 array units are evenly distributed along a circle with a specific radius; on the lower surface of the dielectric board, a 9-port Wilkinson power divider feeding network is printed. Eight identical array units are distributed on the upper surface of the dielectric substrate. The array unit antenna includes four bent monopoles, four L-shaped microstrip lines, a cross-shaped microstrip line for feeding, and a circular metal sheet for impedance matching. The bent monopole replaces the monopole by bending a copper column by 90°. The present invention solves the problem of single polarization of the PSOAM antenna and realizes the miniaturization of the PSOAM array antenna.

The utility model discloses an equal power division network feed differential antenna array, and relates to the technical field of microwaves and radio frequency. Comprising a feed network and a radiating antenna part, the feed network is of a three-layer structure, the middle layer is a slotted copper metal ground, the top layer and the bottom layer are of power division structures symmetrical about the middle layer, and an FR-4 dielectric substrate is arranged between the top layer and the bottom layer; the power division structure is composed of a transmission line and two stages of Wilkinson power dividers, and the radiation antenna part is composed of four dual-band quasi-yagi antennas with through holes and is connected with the power division structure through the through holes. The antenna array is uniform in power distribution, high in anti-interference performance, wide in working frequency band, reliable in connection, stable in performance and reasonable in size.

The invention belongs to the technical field of antennas and electromagnetic waves, and discloses a transmitting-receiving isolation improving method applied to a common-caliber phased-array antenna, which is characterized in that open-circuit band-stop branches with specific electrical length and characteristic impedance are loaded on the same layer of a feed structure of a traditional antenna unit, so that the feed structure can meet the working bandwidth requirement and can also meet the requirement of a common-caliber phased-array antenna. And suppression of out-of-band specific frequency band interference signals is satisfied. The feed structure of the antenna comprises but is not limited to a basic coupling bridge, a Wilkinson power divider, a T-shaped power divider and the like. The feed structure loaded with the open-circuit band-stop stub is beneficial to compact layout design of antennas of different frequency bands. The antenna unit with the out-of-band rejection characteristic can be used for design of a transceiving common-caliber receiving and transmitting antenna unit, miniaturization of air interface calibers of equipment in different communication scenes is achieved, and the integration degree of the equipment is improved.

This invention relates to the field of antenna technology, specifically to a low RCS circularly polarized broadband array antenna based on PCM, comprising four antenna elements. The upper layer of the antenna elements is a 6×6 checkerboard array composed of low-profile polarization conversion metasurface elements, loaded on a slotted antenna with slots in the ground plane. The PCM structure on the surface is excited by microstrip lines through the slots. The upper layer of the PCM element is a double-slotted square metal patch, the middle layer is a dielectric layer, and the lower layer is a slotted grounded metal plate. This invention uses a sequentially rotating feed network as the feeding method, and the feed network consists of three 1-to-2 Wilkinson power dividers. Verification shows that the impedance bandwidth of this invention is 5.1-9.3GHz, and the reflection coefficient can reach -10dB and below. The peak gain in the maximum radiation direction of the antenna is 9.8dBi at 8.8GHz, and the 3dB axial ratio bandwidth range is 6.36-7.92GHz. The RCS reduction frequency band above 10dB is 7.1-15.6GHz, with a relative bandwidth of 74.9%, exhibiting excellent RCS reduction performance.

The present invention provides a circuit structure and design method for a high-isolation SAR antenna feeding component, which belongs to the field of microwave radio frequency circuit technology. Based on the prototype of the Wilkinson power divider circuit of the stripline structure, the signal is led out from the inner layer circuit of the stripline and interconnected with the T / R components and delay amplifier components of each level of the SAR antenna by blind plugging of high-frequency connectors, thereby solving the defect that the stripline circuit is not easy to integrate with the microwave component; the radio frequency link and the calibration link are integrated into the same component, effectively reducing the overall weight of the component; the high-power isolation resistor is configured by digging a blind groove to effectively increase the power resistance of the component; a metal shielding shell structure is provided at the connector port position and the blind groove, and metallized through holes and metallized blind buried holes are provided inside the component, effectively increasing the spatial isolation and inter-channel isolation of the component. The basic circuit structure of the present invention is compact and convenient to be manufactured using a multi-layer PCB, with low processing precision requirements, and has good engineering application value.

Embodiments of the present invention disclose a power divider and device, wherein the divider includes: a local oscillator signal input layer; a local oscillator signal layer located on one side of the local oscillator signal input layer; a second local oscillator signal layer located on a side of the local oscillator signal layer away from the local oscillator signal input layer; a first tunnel hole extending through the local oscillator signal input layer and the local oscillator signal layer; a second tunnel hole and a third tunnel hole extending through the local oscillator signal input layer; and a fourth tunnel hole extending through the second local oscillator signal layer. The solution described in this application utilizes a multilayer board structure to achieve layered signal transmission, and the resistors of the Wilkinson power divider are soldered using a low-cost slotting method.

The invention discloses a non-reflection band-pass filter based on a Wilkinson power divider and a rectangular substrate integrated waveguide resonator. According to the non-reflection band-pass filter, a complementary symmetrical structure is adopted, an isolation resistor on a transmission axis is used as an absorption resistor, and the non-reflection band-pass filter is different from a traditional reflected signal eliminating method. Due to the characteristics of the two paths of reflected signals, the phase difference is 180 degrees, mutual counteraction is achieved, and the mutual counteraction effect of the reflected signals is good. In the frequency selection process, a microstrip line is not directly used, the SIW technology is adopted, the resonant cavity is used as a transmission medium, compared with microstrip line transmission, the band-pass filter has higher power capacity and quality factor, and due to the design, the band-pass filter can work on a higher frequency wave band. The filter designed by the invention keeps very low profile height and is easy to process and produce.

This invention proposes a frequency, polarization, and pattern reconfigurable antenna element and array. The antenna element includes stacked tuned microstrip antenna elements and a reconfigurable feed phase-shifting network. The tuned microstrip antenna element includes a circular radiating patch with an etched annular slot and four varactor diodes connected across the annular slot. The two output ports of the Wilkinson power divider network in the reconfigurable feed phase-shifting network are each connected to two feed point microstrips via PIN diodes. The four feed points form a spatially symmetrical but impedance-asymmetrical structure. The circular radiating patch and the annular radiating patch in the antenna element of this invention have structural continuity, and only four varactor diodes are loaded on the annular slot, reducing gain fluctuations. Furthermore, feeding the antenna element through four spatially symmetrical but impedance-asymmetrical feed points ensures good matching between the feed phase-shifting network and the antenna element over a wide bandwidth, thus broadening the antenna tuning bandwidth.

The invention relates to a novel reflection-type analog pre-distortion circuit, and the circuit comprises a 90-degree bridge which is used for generating a first signal and a second signal, the phase difference of which is 90 degrees; the Wilkinson equal power divider is used for equally dividing the first path of signal into two paths of equal signals; the two multiplication reflection branches are used for generating two nonlinear reflection signals; the Wilkinson equal power divider is also used for synthesizing the two paths of nonlinear reflection signals into a first reflection signal, and the fixed reflection branch is used for reflecting the second path of signal to obtain a second reflection signal; and the 90-degree bridge is also used for performing vector synthesis on the first reflection signal and the second reflection signal to output a pre-distortion signal. The invention can form effective complementation with the nonlinear characteristic of the solid-state power amplifier, thereby improving the linearity of the solid-state power amplifier.

The application provides a power amplification module, which comprises a substrate made of a molybdenum-copper composite material and a power amplification unit mounted on the substrate, and parts of components of the power amplification unit are mounted on the substrate through a heat sink made of a copper-molybdenum-copper composite material, and the heat sink is sintered on the substrate through a soldering material; the power amplification unit comprises an input matching circuit, a power amplification circuit and an output matching circuit; the power amplification circuit comprises four; the output matching circuit comprises a first-stage output matching circuit, a second-stage output matching circuit and a third-stage output matching circuit; the first-stage output matching circuit comprises four; the second-stage output matching circuit comprises two first Wilkinson power dividers; the third-stage output matching circuit comprises a second Wilkinson power divider, two first feeding circuits and an output matching circuit. The power amplification module can not only reliably control the junction temperature of the power amplification circuit, but also improve the output power and efficiency of the power amplification module.