76 results about "Wilkinson power divider" patented technology

The invention discloses a broadband low-coupling dual-polarization dielectric resonator antenna based on dual-mode resonance and differential feed. The broadband low-coupling dual-polarization dielectric resonator antenna comprises a dielectric resonator, two pairs of orthogonal coaxial probe pairs, a first Wilkinson power divider, a second Wilkinson power divider, a first feed port and a second feed port, the two pairs of orthogonal coaxial probes are both inserted into the dielectric resonator; each pair of coaxial probes is connected with two output ends of the corresponding Wilkinson power divider; the first feed port excites the pair of coaxial probes to feed the dielectric resonator through the first Wilkinson power divider, and excites a horizontal polarization radiation mode in the x-axis direction; a second feed port excites the other pair of coaxial probes to feed towards the dielectric resonator through a second Wilkinson power divider, and a horizontal polarization radiation mode in the y-axis direction is excited; according to the invention, a dual-polarization radiation mode which is compact in structure, broadband and low in coupling is realized, and each polarization further increases the bandwidth by exciting two resonance modes with close frequency points.

The invention discloses a broadband circular polarization metasurface antenna with a low radar cross section. The broadband circular polarization metasurface antenna is composed of a top layer 4 * 4 antenna array, a middle layer metal ground, a bottom layer one-to-sixteen sequential rotation feed network and two dielectric plates among the three layers. The antenna array is composed of four subarrays which are arranged in a 2 * 2 period, and the four groups of subarrays are symmetrical up and down and left and right along the center of the antenna array and are arranged in a chessboard shape. Each antenna unit in the antenna array comprises a bow-tie-shaped metal patch, and the patch is connected with the output end of the feed network at the bottom layer through a first metalized through hole; the feed network is composed of three one-to-two second-order Wilkinson power dividers, four 90-degree phase shifters, twelve T-shaped power dividers and a plurality of sections of 50-ohm microstrip lines. Through fusion design of the antenna and the metasurface, the problem that in the design process of the metasurface antenna with the low radar cross section, the antenna aperture is increased due to the fact that the antenna and the metasurface are independently designed firstly and then integrated is solved, and the low radar cross section characteristic of the broadband and the high-performance circular polarization radiation characteristic are achieved.

Multi-stage cascaded power divider having a single input port and a plurality of output ports, comprising one stage including at least one 3-way Wilkinson power divider and at least one stage consisting of at least one 2-way Wilkinson power divider, wherein the stage consisting of at least one 2-way Wilkinson power divider is connected to the single input port and the stage including the at least one 3-way Wilkinson power divider is connected to the plurality of output ports.

The invention discloses a one-to-eight power division network based on ceramic packaging, which adopts a Wilkinson power divider in a three-stage framework strip line form, and comprises a top metal layer, a middle strip wiring metal layer, a bottom metal layer and a ball mounting metal layer from top to bottom, and a dielectric substrate is clamped between every two metal layers. The top metal layer is provided with an input end and a plurality of isolation resistors, the middle strip-shaped wiring metal layer is provided with power divider network wiring, the input end and the plurality of isolation resistors are respectively connected with the power divider network wiring through metalized through holes, and the ball mounting metal layer is provided with a plurality of output ends. And each output end is connected with the power divider network routing through a metalized through hole. Through the multi-layer structure design, the Wilkinson power divider design, the metalized through hole and isolation resistor design and the optimization of packaging and connecting modes, the problems of miniaturization, high integration level, high reliability and low manufacturing cost of the power division network are successfully solved, and the power division network is suitable for various ceramic packaging applications.

The invention relates to a transmitting and receiving network between common-caliber phased array subarray antennas. The transmitting and receiving network comprises an active plate, a metal plate and a network plate which are sequentially arranged from top to bottom, the metal plate is used for assisting the active plate in heat dissipation; the active plate at least comprises an amplifier and a power supply; the transmit-receive network board comprises a power division network layer, a power combination network layer and a dielectric layer. A floor, a first dielectric layer, a first transmitting power dividing network layer, an Nth dielectric layer, an Nth transmitting power dividing network layer, an (N + 1) th dielectric layer, a first receiving power combining network layer, an (N + 2) th dielectric layer, a second receiving power combining network layer,..., a 2Nth dielectric layer, an Nth receiving combining network layer, a (2N + 1) th dielectric substrate and a floor are sequentially arranged from top to bottom. And a pp layer and a floor are arranged between any power division network layer and the adjacent dielectric layer and between any power combination network layer and the adjacent dielectric layer. The Wilkinson power divider is adopted to improve the channel isolation, so that the transceiving network is small in size, light in weight, high in isolation and high in amplitude consistency.

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.

The invention provides an ultra-wideband Wilkinson power divider based on a liquid crystal material, relates to the technical field of microwaves, and completes impedance matching between transmission lines by designing the length and characteristic impedance of the transmission lines and adopting a specific isolation resistor structure. Uniform distribution and isolation of microwave signals in multiple layers of media including a liquid crystal layer are achieved. Modeling simulation is carried out on the power divider in three-dimensional electromagnetic field simulation software, the simulation result shows that the overall insertion loss of the power divider is smaller than 3.6 dB, and the relative bandwidth reaches 100%.

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 utility model relates to a GPS (global positioning system) and Beidou composite navigation terminal antenna, which belongs to the technical field of navigation terminal antennas and comprises a composite navigation terminal antenna body, a lower ceramic substrate and a Wilkinson power divider, the lower ceramic substrate and the Wilkinson power divider are arranged on the composite navigation terminal antenna body, four receding grooves are arranged on the top surface of the lower ceramic substrate, and the Wilkinson power divider is arranged on the lower ceramic substrate. The top surface of the Wilkinson power divider is fixedly connected with four connecting columns, one end of each connecting column penetrates through the corresponding receding groove and extends to the top of the lower-layer ceramic substrate, and the left side surfaces of the four connecting columns are all provided with placing grooves. According to the GPS and Beidou composite navigation terminal antenna, the lower-layer ceramic substrate and the Wilkinson power divider are fixed through attachment between the fixing plate and the lower-layer ceramic substrate, operation through an external tool is not needed, a worker can disassemble and assemble the antenna conveniently, the connecting column is supported through attachment between the rubber ring and the abdicating groove, and the antenna is convenient to assemble and disassemble. The stability of the connecting column is improved.

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.

The invention provides a millimeter wave radar system based on an underground mine tunnel and a vehicle auxiliary system. The radar system is characterized in that a radar radio frequency front-end circuit comprises a plurality of cascaded millimeter wave radar chips which are connected with a data acquisition and processing module through a serial peripheral interface, and the plurality of cascaded millimeter wave radar chips are divided into a master chip and at least one slave chip; local oscillation signals generated by the master chip are distributed to the slave chip through the Wilkinson power divider, a digital frame synchronization clock is distributed to the slave chip through the master chip and the clock distributor, and original ADC data captured by the millimeter wave radar chips are transmitted to the data acquisition and processing module. And the data acquisition and processing module is used for performing multi-dimensional FFT processing on the original ADC data transmitted by the radar radio frequency front-end circuit to obtain a distance Doppler image, and separating and identifying a distance and speed map in the distance Doppler image through a CFAR algorithm to obtain distance and speed information of each target around and in the roadway.

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.

The utility model discloses a novel small-size multi-layer chip type power divider, which adopts a miniaturized multi-layer chip type structure manufactured by an LTCC (Low Temperature Co-Fired Ceramic) technology, has the advantages of high reliability, low insertion loss, high isolation, small size, light weight, easiness in integration, low cost and the like, and is suitable for large-scale production. Therefore, the application is very wide, and the size can be reduced to 0.65 mm * 0.50 mm * 0.35 mm. On the basis of the LTCC (Low Temperature Co-fired Ceramic) technology, a traditional Wilkinson power divider lumped parameter model design is adopted, a capacitor and an inductor adopt an up-and-down structure, the capacitor is arranged on the lower layer to conveniently form a grounding capacitor with GND (Ground), parasitic inductance introduced by a connecting line is reduced, the inductor is arranged on the upper layer to reduce parasitic effect between the inductor and the capacitor, and thus the reliability of the power divider is improved. The middle parts are connected through point columns.

The invention discloses a design method of a one-to-four filtering power divider applied to a low frequency band. The design method comprises the following steps: designing a Wilkinson power divider prototype; calculating order, source end impedance and load impedance which need to be matched by using a multi-section stepped impedance matching theory; calculating the impedance transformation ratio of the Chebyshev low-pass filtering impedance matching network; designing a Chebyshev low-pass filtering impedance matching network, and calculating a lumped element parameter value in the Chebyshev low-pass filtering impedance matching network; lumped element parameter values in the Chebyshev low-pass filtering impedance matching network are converted into parameter values corresponding to distributed parameters; and verifying whether the distributed parameters are reasonable or not, and if yes, forming design parameters of the one-to-four filtering power divider. The method has the remarkable effects that the functions of performing power distribution on signals and filtering clutters can be realized, mutual interference among the signals is reduced, and wireless communication resources are optimized.

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.

The invention relates to a design of a DGS filtering second harmonic image frequency rejection mixer, and belongs to the technical field of microwave circuits. The mixer comprises two Wilkinson power divider modules, a phase shift line module, two DGS filtering second harmonic mixing modules and an intermediate frequency lumped LC phase shift module. The Wilkinson power divider module at the radio frequency input end is divided into two paths to be supplied to the phase shift line module and the second harmonic frequency mixing module for DGS filtering; the output end of the phase shift line is connected with the input end of the DGS filtering second harmonic frequency mixing module; the Wilkinson power divider module at the input end of the local oscillator is divided into two parts to be supplied to the second harmonic frequency mixing module of two DGS filtering; the two input ends of the intermediate frequency lumped LC phase shift module are connected with the output ends of the two DGS filtering second harmonic frequency mixing modules respectively. The output end of the intermediate frequency lumped LC phase shift module is a total output end. According to the invention, the interference of the image frequency signal can be effectively suppressed, the system cost is saved, and an important technical support is provided for realizing a high-performance communication system.

The invention belongs to the technical field of radar and communication, and relates to a two-dimensional active sum-difference network device and a preparation method thereof. Comprising four antenna sub-arrays, at least three four-channel amplitude-phase multifunctional chips and four one-to-three equal power division Wilkinson power dividers, the four antenna sub-arrays are distributed on an antenna array plane, and one antenna sub-array corresponds to one quadrant of the antenna array plane; the four-channel amplitude-phase multifunctional chip is provided with four branch input ports and one junction; the common end of one antenna sub-array is connected with the common end of the one-to-three equal power division Wilkinson power divider; and one path after power division of each one-to-three equal power division Wilkinson power divider is respectively connected with four branch input ports of the four-channel amplitude-phase multifunctional chip. Through modular design and dynamic parameter configuration, high-integration-level and low-loss two-dimensional beam forming is achieved, and meanwhile flexible expansion of the antenna subarrays is supported.

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.