1077 results about "Power division" patented technology

A compact four-way waveguide power divider (10). The inventive power divider (10) includes an input waveguide (11) that terminates at a junction with two adjacent waveguides on opposite sides of the input waveguide. On the opposite side of the junction is a conducting wall into which is built an inductive septum (20). The inductive septum (20) serves to partially match the input impedance of the structure. Second and third inductive septums (22 and 24) are also built into the output arms of the power divider (10). The purpose of the second and third septums (22 and 24) is twofold. In addition to partially matching the power divider's input impedance, the positions of the second and third septums (22 and 24) can be adjusted to equalize the power division between the output arms. Hence, the waves exiting the four output arms of the power divider have highly equalized amplitudes and phases. Further, the phases at the output ports are equalized by adjusting the lengths of the output arms. The use of offset inductive septums (22 and 24) in the output arms to achieve equalized power division allows the input and output waveguides to be placed in very close proximity, resulting in an extremely compact structure.

The invention discloses a low-cost microwave- and millimeter-wave polarized antenna of the multi-layer PCB (Printed circuit board) process. The polarized antenna is of a multi-layer structure and comprises a quadrate radiating metal patch, an upper dielectric substrate, a metal floor equipped with an H-shaped coupling gap, a medium dielectric substrate, a feed metal plate with power division network, a lower dielectric substrate and a bottom metal floor; the quadrate radiating metal patch is coupled with the floor equipped with the H-shaped coupling gap to realize feed; the feed network of a microstrip line structure is positioned below the floor; the metal floor equipped with the H-shaped coupling gap is connected with the bottom metal floor through a metal through hole; the feed metal plate with the power division network is connected with the bottom metal floor through a second metal through hole to form a coaxial microstrip line conversion structure by which feeding from the bottom part of the antenna is realized. The antenna has the characteristics that the frequency band is wide, the size is small, the cost is low, the manufacturing and processing are simple, and the axial ratio feature is great.

The invention discloses a wide band single pulse flat plate slot array antenna which comprises four wide band low profile flat plate slot antenna sub-arrays and a single pulse waveguide comparator. Each wide band low profile flat plate slot antenna sub-array further comprises a wide band low profile flat plate slot antenna unit and a waveguide feed network, and each wide band low profile flat plate slot antenna unit further comprises a square radiating cavity, radiating slots, a stimulation waveguide cavity, a stimulation slot and a feed waveguide. Each waveguide feed network is formed by a plurality of equal-arm-length equal-power-division and equal-arm-length unequal-power-division waveguide H-T powder dividers in a cascading mode, the single pulse waveguide comparator is formed by three plane magic Ts and an equal-arm-length equal-power-division waveguide H-T power divider, output openings of the single pulse waveguide comparator are connected with the wide band low profile flat plate slot antenna sub-arrays, and a sum beam, an azimuth difference and a pitching difference beam are formed at three input ports. Compared with a traditional single pulse waveguide slot antenna, the wide band single pulse flat plate slot array antenna has the wider band and is higher in efficiency, easier to design and easier to manufacture.

The invention discloses a synchronization calibration and error compensation method for a multi-channel receiver. The method comprises the following steps: a system is switched to a synchronization calibration mode; a power division network divides a standard dot frequency signal output by a synchronization calibration signal source into multiple paths of signals, wherein the number of paths corresponds to that of channels; a switching matrix outputs the multiple paths of signals to a multi-channel A/D (analogue/digital) unit; a synchronization error compensation unit analyzes the digitalized calibrating signals from the multi-channel A/D unit, and performs synchronization calibration and error compensation on each channel; after compensation is finished, the system is switched to a normal working mode, and the receiver enters a radar echo signal receiving state. The invention also discloses a synchronization calibration device for the multi-channel receiver. Through the adoption of the scheme, the error calibration is high in automation degree, the real-time performance is strong, the processing speed is high, an error calibration process is easy to operate, any connection and hardware modification are avoided, and difficulty in the reception of a broadband signal can be effectively solved.

The present invention relates to a wireless communication field and discloses a carrier power division method and system in a same power amplifier to improve the power utilization ratio of the power amplifier. In the present invention, an instantaneous transmitting power is distributed to the carrier wave in the power amplifier when the sum of the biggest transmitting powers configured to each carrier wave is bigger than the rated gross power and when the sum of the instantaneous transmitting power of each carrier wave is smaller than or equal to the rated gross power, otherwise, the rated gross power is distributed to each power amplifier according to a predetermined rule in the power amplifier. If each carrier wave includes at least one wave carrying the R99 service and at least one wave carrying the HSDPA service, only the power of the R99 service distributed to each carrier wave can be restrained and the dump power can be obtained through subtracting the sum of the transmit power of the R99 service in each carrier wave by the gross transmit power of the power amplifier. Then part of or the whole of the dump power is distributed to the wave carrying the HSDPA service for transmitting the HSDPA service.

The invention provides a vector measurement method for passive intermodulation interference. The vector measurement method for the passive intermodulation interference comprises the steps that firstly a computer module adjusts the output frequency of a frequency reference unit, and a frequency reference signal is output; the frequency reference signal is used by a first signal source, a second signal source and a local oscillator source module after power division is conducted on the frequency reference signal, and then a testing signal with a frequency F1, a testing signal with a frequency F2 and a local oscillator signal L0 are generated; a part of the testing signal F1 and a part of the testing signal F2 are amplified by an amplifier module after power division is conducted on the testing signal F1 and the testing signal F2, then the signals are combined to generate a +43dBm dual-tone signal used for testing, reciprocal mixing is conducted on the other part of the testing signal F1 and the other part of the testing signal F2 after the other part of the testing signal F1 and the other part of the testing signal F2 pass through a frequency multiplication module, the frequency of an obtained signal is 2F1-F2 after filtering, and the signal is received by a reference receiver to serve as a PIM reference signal. By the adoption of the vector measurement method for the passive intermodulation interference, self-intermodulation and self-calibration of an instrument can be achieved, vector compensation for the self-intermodulation of the instrument can be achieved, the self-intermodulation of a system is greatly reduced, the measurement range of the system is widened, and the uncertainty of measurement is reduced; the time-frequency conversion technology can be directly adopted by a measurement result, and the time domain response to a PIM product can be observed.

The invention discloses a wavelength-division time-division mixed multiplexing passive optical network system, which at least comprises an optical line terminal, an optical distribution network and a plurality of optical network units. The optical line terminal is used to send downlink optical signal wave bands of a plurality of services, make multiplexing wave coupling to the optical signal wave bands of the plurality of services, then allow the optical signal wave bands to enter the same single fiber and transmit the optical signal wave bands to the optical distribution network; the optical distribution network is used to demultiplex an optical signal which is received from the optical line terminal and wave-coupled, then makes multi-level selective download and transparent transmission to one or a plurality of optical signals after the demultiplexing, and makes power division of one or the plurality of demultiplexed optical signals to the optical network units; the optical network units are used to receive light signals of the plurality of services downloaded by the optical distribution network through a coupling fiber, and logically processes the optical signals. The wavelength-division time-division mixed multiplexing passive optical network system has the advantages of large single-fiber access capacity, low cost of network construction, easy operation maintenance and upgrade and so on.

A wireless power transmission system, a resonator in the wireless power transmission system, and a resonator design method for optimum power division are provided. A power receiver of the wireless power transmission system, includes a resonator configured to receive a power from a power transmitter. The power receiver further includes a power supply configured to supply the received power to a load. A figure of merit (FOM) of the resonator corresponds to a power dividing ratio of the power transmitter.

The invention discloses an antenna array module. More than two antenna units are arranged on a surface, which two power division circuits are arranged, of a feeding network circuit board, a filter isarranged on a surface, which two coupling circuits are arranged, of the feeding network circuit board, each power division circuit is provided with an input end and a plurality of output ends, the plurality of output ends of one of the power division circuits is used for performing polarization feeding on one of the antenna units at -45 degrees, the plurality of output ends of the other power division circuit are used for performing polarization feeding on one of the antenna units at +45 degrees, each coupling circuit is provided with a radio frequency input end and an output end, the output end of each coupling circuit is electrically connected with the input end of one of power division circuits, the filter is at least provided with two output ends, and the two output ends of the filterare electrically connected with the radio frequency input end of one of the coupling circuits. The invention also discloses a base station antenna. Integration and modularization are achieved, the expansibility is improved, an installation structure and a connection structure are simple, the antenna array module is easy to debug and maintain subsequently, and the manufacturing cost and the application cost are reduced.

The invention relates to a wideband multi-channel substrate integrated waveguide power divider adopting a novel high-isolation technology. Input/output ports and a substrate integrated waveguide cavity are connected by using a novel mixed multi-through-hole probe to realize wideband impedance matching. A flow drainage groove and a resistive isolating groove are formed on the substrate integrated waveguide cavity, and an isolating resistor is arranged on the resistive isolating groove to obtain high isolation characteristic of each output port. The output ports are distributed at equal intervals on a circle by taking an input port as the center, and the whole power dividing circuit has axial rotation symmetry, so that the amplitudes of multi-channel power dividing signals are equal, N-channel parallel power division is realized, and signal transmission loss can be reduced to the largest extent. The power dividing circuit can be flexibly designed into an in-phase power divider, an inverse-phase power divider and a differential power divider. The wideband multi-channel substrate integrated waveguide power divider has the advantages of wide band, low insertion loss, high isolation, any multi-channel power dividing output, high input/output standing wave, high amplitude consistency of each channel of power dividing output signal, and the like. The wideband multi-channel substrate integrated waveguide power divider is mainly applicable to a microwave millimeter wave power synthesis amplification system, a phased-array antenna feed network and the like, and has a wide application prospect in microwave millimeter wave systems for communication, radar and measurement.

The invention discloses a chip-type Ka-frequency band wide-angle scanning satellite communication antenna which comprises a radiation layer, a correction network layer, a radio-frequency circuit layer, an environmental control layer, a power distribution layer, a radio-frequency signal power division layer and a wave controlled network layer, wherein the radiation layer is connected with the correction network layer and the radio-frequency circuit layer respectively, the correction network layer is connected with the radiation layer and the wave controlled network layer respectively, the radio-frequency circuit layer is connected with the radiation layer, the environmental control layer is arranged between the radio-frequency circuit layer and the power distribution layer, the power distribution layer is connected with the radio-frequency circuit layer, the radio-frequency signal power division layer is connected with the radio-frequency circuit layer, and the wave controlled network layer is connected with the radio-frequency circuit layer and the correction network layer. In the chip-type Ka-frequency band wide-angle scanning satellite communication antenna, a chip-type active phased array antenna structure, high-efficient distributed feed space energy synthesis and a high-density monolithic microwave integrated circuit technique are adopted, and resources provided by the system and scale production technology are fully utilized, thus, system integration degree and utilization rate are improved, the height, the volume and the weight of an antenna system are reduced to the greatest extent, cost is reduced, and the requirements of mass production and debugging are met.

The invention discloses a powder divider integrating a single-frequency bandpass filter, which comprises an upper-layer micro-strip structure, an isolating component, an intermediate layer dielectric substrate and a lower-layer grounding metal plate. The powder divider integrating the single-frequency bandpass filter comprises two terminal open-circuit single-frequency bandpass annular filters and the isolating component connected between the two terminal open-circuit single-frequency bandpass annular filters. The input impedance and the output impedance of the powder divider integrating the single-frequency bandpass filter are identical; and the input impedance and the output impedance of each terminal open-circuit single-frequency bandpass annular filter are several times those of the powder divider integrating the single-frequency bandpass filter. Each terminal open-circuit single-frequency bandpass annular filter consists of two U-shaped half-wavelength resonators with identical structures. The isolating component can be a resistor, a capacitor or an inductor. The powder divider can be used in various radio-frequency front-end systems, simultaneously has the functions of power division and power selection and facilitates the integration and the miniaturization of devices.

An antenna beam scan unit includes: a Rotman lens that performs power division and synthesis between plural antenna ports and three or more beam ports; plural antenna elements which are connected to the respective antenna ports and to or from which radio waves are inputted or outputted; plural amplifiers that are connected to the respective beam ports of the Rotman lens and perform amplitude modulation on a signal; input paths for a transmission signal disposed in association with the amplifiers; switches for switching the input paths; and a beam control unit. The input paths include first paths and second paths on which a signal that is out of phase with a signal on the first paths is produced. The beam control unit selects two adjoining beam ports, and can switch the first paths and second paths as the input paths for the two beam ports.

The invention discloses a low-profile one-dimensional active transceiving phased-array antenna for satellite communication in motion. The antenna comprises dual-linear-polarization antenna units in inclined and staggered arrangement, flat waveguide dual-channel feed networks, flat waveguide dual-channel miniaturized duplexers, waveguide transition and miniaturized TR components and miniaturized printed board power division networks. The units of the phased-array antenna are dual-linear-polarization waveguide radiators in triangularly inclined and rear-staggered arrangement, so that the antenna is low. By the aid of a method of sharing the same aperture for horizontal polarization and vertical polarization, aperture utilization efficiency of the antenna is increased, a flat waveguide feedback mode is adopted for both horizontal polarization and vertical polarization, loss of the feed networks is reduced, and quite high antenna efficiency is achieved. After passing through the antenna units, the feed networks and the duplexers, dual-polarization signals are subjected to polarization adjustment via polarization adjustment modules in the TR components and are synthesized via pitching surface networks so as to achieve a transceiving function of radio-frequency signals.

The invention discloses a dielectric-loaded circular-polarized quadrifilar helix antenna of a power-division phase-shift feed network. The broadband feed network directly carries out equal amplitude and 90-degree phase difference feed on a four-wire helix antenna, thereby overcoming the problems of narrow bandwidth, inconvenient regulation and correction and high processing requirements of the traditional circular-polarized quadrifilar helix antenna which produces the 90-degree phase difference by self-phase-shift and simultaneously avoiding the need of designing balun due to unbalanced feed.The dielectric-loaded circular-polarized quadrifilar helix antenna has the advantages of compact structure, simple design and excellent broadband polarization property, thereby being very applicable to portable mobile terminals.

The invention provides a one-bit digital coding antenna unit and a digital phase array antenna system. A PIN diode is integrated on a radiating patch of a direct radiation type digital coding antennaunit provided by the invention; by applying different biases to the PIN diode, radiation beams of the antenna unit take on two phase positions, that is, 0 degree and 180 degrees, which correspond to numerical codes "0" and "1", respectively. By arranging each unit periodically to form an array and feeding through a power division network, a novel phase array antenna is formed; and as code distribution of units on the array is controlled through the optimization algorithm, scanning beams in different orientations or shaped-beams in different shapes can be generated. Compared with the traditional phase array antenna, the digital phase array antenna system reduces system cost and complexity; and compared with digital coding super-surface based phase array antenna, the digital phase array antenna system reduces the profile and volume of the system, avoids energy leakage caused by spacial irradiation feed and improves overall efficiency of the antenna.

The invention discloses a dual-port dual-frequency dual-circular polarized micro-strip array antenna, comprising a dielectric substrate (1), four dual-frequency shared radiation patches (21, 22, 23, 24) arranged on the upper surface of the dielectric substrate (1), a first feeding port (3) and a second feeding port (4), wherein a first-frequency output end of the four radiation patches (21, 22, 23, 24) is connected with the first feeding port (3) through a series-feed power division network (5), and a second-frequency output end of the four radiation patches (21, 22, 23, 24) is connected with the second feeding port (4) through a parallel-feed power division network (6). The dual-port dual-frequency dual-circular polarized micro-strip array antenna disclosed by the invention is simple in structure with a low section plane, good in bandwidth and low in cross polarization, can be expanded into a large-scale array conveniently, and has unique advantages for dual-circular polarization application of two frequency points with close frequencies, and the two ports have good isolation.

The invention discloses a ground automatic testing instrument device with a satellite relay trace function and a testing method thereof. The testing method comprises the following steps: a signal source generates a single carrier signal with assigned frequency and power, two signals with the same frequency and regular phase difference are generated after the single carrier signal is subjected to power division by a power divider, and the two signals are sent to a to-be-tested satellite after passing through a programmable attenuator and a programmable phase shifter respectively; the to-be-tested satellite drives an antenna simulator to rotate according to the input beacons and difference signals, and transmits downwards satellite state parameters in real time; downlink remote testing data is sent to a satellite testing server after remote testing, receiving and demodulation so as to complete the processing of satellite remote testing data, and the satellite remote testing data is sent to a control computer through an LAN (local area network) network; the control computer receives the satellite remote testing data in real time, parameters of the programmable attenuator and the programmable phase shifter are set according to the attitude of the antenna simulator in remote testing, and the corresponding beacons and the difference signals are output in real time; and the above testing steps are repeated circularly until the antennal simulator indicates that a relay star is aimed, and the relay trace process is completed.

The invention discloses a dual-circular polarization microstrip antenna array which comprises a metal frame, a radiation microstrip board, metal columns, foam, a feeder microstrip board, a metal floor and connectors. Directional couplers, power dividers, radiation patches and isolation hole arrays are integrated by the feeder microstrip board, so that dual-circular polarization radiation functions can be realized. Impedance matching and bandwidth broadening functions can be realized by the radiation microstrip board and a foam board. The connectors are used as interfaces of the dual-circular polarization microstrip antenna array and feeder line systems. Grounding and protection effects can be realized by a frame which comprises the metal frame and the metal floor. Interlayer positioning, structure strengthening and resonant effect eliminating functions can be realized by the metal columns. The dual-circular polarization microstrip antenna array has the advantages that double-layer microstrip patch antennas, circular polarization power division feeder, positioning and supporting, resonance eliminating, mutual coupling isolation and environmental protection technologies are combined with one another, accordingly, merits of low profiles, costs and cross polarization of the traditional circular polarization microstrip patch antennas are inherited, and the dual-circular polarization microstrip antenna array is simple and firm in structure and convenient to process and can be used as a communication or radar dual-circular polarization phased-array antenna.

The invention provides a 5G large-scale array antenna which comprises a dense radiation array, a reflecting plate, a PCB and a blind-inserting type radio-frequency connector. The PCB is printed by a calibration network and a feed network; and the dense radiation array is composed of a plurality of double-polarization oscillators fixed on the reflecting plate, and each double-polarization oscillator comprises a radiation unit and a feed piece; and decoupling devices are arranged among the radiation units; and an isolation resistor is designed in each stage power division port of the feed network and the multi-stage calibration network. The decoupling devices designed for the dense radiation array ensure the direction graphs of all the radio frequency channels are consistent. The multi-stage calibration network adopts a plurality of beneficial technologies to ensure that the amplitude-phases of all the radio frequency ports are consistent; and therefore, the 5-G large-scale array antenna disclosed by the invention can achieve a good service and broadcasting direction graphs through the beam forming technology, making the antenna very suitable to be applied to a 5G large-scale antenna system.

The embodiment of the invention discloses a multi-user power division multiplexing method and device. The method comprises the steps of receiving state information reported by one or a plurality of users and multi-way signal information to be transmitted; distributing sending power to the multi-way signals of the one or the plurality of users according to the state information and the multi-way signal information; adducting the multi-way signals after power distribution to generate overlap signals of the multi-way signals. According to the method, a sending end distributes different sending powers to the multi-way signals, so that users can synchronously transmit the multi-way signals at the same frequency even if no obvious differential path loss is between the channels of the plurality of users, the problem that the existing power division multiplexing technology cannot be performed in case of small signal path loss difference in power multiplexing can be solved, and the network transmission capacity can be improved.

The invention discloses a multi-layer planar antenna array. The multi-layer planar antenna array is characterized by comprising multiple layers of dielectric plates and interlayer metal plates, wherein each layer of dielectric plate is integrated with a double-layer feed network (including an integrated air waveguide) and one part of antenna structure separately; one interlayer metal plate coats the part between two adjacent layers of dielectric plates; the layers are coupled by using gaps; a lower layer in each double-layer feed network is an air waveguide power division network and an upper layer is an SIW feed network; and the dielectric plates and the interlayer metal plates are laminated into a complete antenna. The multi-layer planar antenna array is simple in structure; compared with the same type of products, the multi-layer planar antenna array has the advantages of being low in transmission loss, large in bandwidth, easy to process and high in gain; and the cost is reduced while the performance is kept.

The invention relates to an optical transmitter for generating various 16QAM (Quadrature Amplitude Modulation) code types. A data source generates two paths of signals for carrying out power division to obtain four paths of data; then two paths of signals drive a double-parallel modulator to obtain four constellation points; four levels obtained by laminating another two signals are used for driving a phase modulator; and finally, different QAM code types can be obtained by simple adjusting. The transmitter for generating various 16QAM code types can generate three different 16QAM code types by adopting a transmitter structure based on a double-drive modulation DPMZM and a cascade phase modulator, namely a square 16QAM code type, a star-shaped 16QAM code type and a 16APSK (Amplitude PhaseShift Keying) modulation code type, has high flexibility and can be used for different transmission systems.

A power divider for a waveguide between a single electromagnetic microwave generator input and two output ports, the divider including two tuner networks, each comprising a moveable capacitive probe with a pair of fixed flanking inductive posts.

The invention discloses a packaging method for a multi-dimensional power division network of a TR (Transmitter and Receiver) assembly. The method comprises the steps of through adoption of a vertical interconnection mode, dividing the TR assembly into three kinds of circuits: a microwave circuit, a digital circuit and a power supply circuit; correspondingly dividing a circuit board into three kinds of circuit layers: a microwave layer, a digital layer and a power supply layer, wherein the circuit lines of the three kinds of circuits are located in the different circuit layers, and the different circuit layers are isolated by employing ground layers; the different circuit layers are interconnected through adoption of a mode of intensive through holes; and a transmitter and receiver unit of the TR assembly is interconnected with the multiple circuit layers through adoption of a mode of microstrip lines and strip lines, the transmitter and receiver unit of the TR assembly is interconnected with an antenna through adoption of an insulator sintering mode, and the devices of the transmitter and receiver unit of the TR assembly are sealed in a transmitter and receiver cavity. According to the TR assembly packaging method, functions such as transceiving and correction of the antenna, formation of a radio frequency beam and a digital interface of a synthesized beam are realized; and the method is relatively high in integration degree, isolation degree and reliability.