39results about How to "Improve power combining efficiency" patented technology

The invention provides a symmetrical coupling wave-guided wave power synthesis amplifier, which comprises an input waveguide, an output waveguide, multi-stage coupling structures connected with the input waveguide and the output waveguide respectively, and multi-stage amplifiers correspondingly connected with the multi-stage coupling structures one by one, wherein the multi-stage coupling structures are vertically arranged in a traveling-wave direction of the input waveguide and the output waveguide, and each stage of the coupling structure is provided with a plurality of coupling units; a matching element is arranged at each stage of coupling structure except for the final stage of the coupling structure; and the micro-wave power input from the input waveguide is orderly fed into the plurality of coupling units in the multi-stage coupling structures in certain proportion. The power synthesis amplifier can provide the high-power output of high-end and millimeter wave bands of the microwave, meet the requirements of various communication and electronic systems, and solve the problems that the conventional power synthesis amplifier has less synthesis approach, narrower bandwidth andthe like at high-end or millimeter wave bands of the microwave.

The invention relates to a space power synthetic antenna of a curve array feed source bifocal parabolic reflecting surface, comprising a reflecting surface and a feed source array. The reflecting surface of the antenna is a bifocal parabolic reflecting surface formed by a parabola with a shorter focal length on the horizontal plane along another parabola with a longer focal length on the verticalsurface, the feed source array is a parabola curve feed source array formed by aligning a plurality of horn antennae on a parabola which is formed by translating the parabola with the longer focal length to the focus of the parabola with the shorter focal length, the phase of each horn antenna is set according to the Huygens-Fresnel principle, and each horn antenna achieves the maximum in-phase synthesis in the maximum radiation direction. Radiation generated by the space power synthesis of the feed source array irradiates the bifocal parabolic reflecting surface which reflects electromagnetic waves to form a needed wave beam so as to improve the antenna gain. The antenna is simple in structure and has high gain.

The invention discloses a high-efficiency and high-power microwave space power synthesis method. According to the method, power synthesis of wave beams radiated by a plurality of antennas is performed in the space. The method includes the following steps that: 1) a time inversion antenna array is set at one side of a detection area, one antenna unit is arbitrarily selected to emit weak signals to detect a non-cooperative target, the main emission direction of each antenna is determined according to echoes, and the physical direction of the antenna unit is adjusted according to the main emission direction so as to be consistent with the main emission direction, and a space-frequency multi-state response matrix is built, and time inversion signals corresponding to the target are obtained; and 2) the time inversion antenna array increases power to transmit the time inversion signals obtained in the step 1) and focuses the time inversion signals at the location of the target. According to the high-efficiency and high-power microwave space power synthesis method of the invention, the time inversion algorithm is adopted to realize spatial power synthesis, and therefore, the efficiency of power synthesis is improved, and an adaptive focusing ability can be realized; and non-cooperative target detection and spatial power synthesis are integrated, and therefore, and high-power microwave space power synthesis is efficiently achieved.

The invention provides a power amplifier comprising a plurality of power amplifying paths. Each power amplifying path comprises at least one amplifier, and at least one of the power amplifying paths is provided with at least one adjustable phase shifter. Compared with the prior art, the power amplifier has the advantages that phase error among the power amplifying paths is reduced by arranging the phase shifters on at least one of the power amplifying paths, affection resulted from production factors and devices themselves is greatly reduced, power synthesis efficiency is improved and yield rate of the power amplifier is increased.

The invention discloses a C-band space power synthesis solid-state power amplifier and relates to the field of satellites and microwave communication. The C-band space power synthesis solid-state power amplifier is composed of an upper cavity, an H-shaped middle press block and a lower cavity, wherein the upper cavity and the lower cavity are vertically symmetrically arranged and are of the same structure. The upper cavity is provided with an upper substrate, the upper substrate is composed of a microstrip printed board, two power amplification units, four microstrip separators, four separator press blocks, two power amplification unit press blocks and four feedthru capacitors, wherein the upper substrate is of an axisymmetric structure relative to the connecting line of the two power amplification units. The C-band space power synthesis solid-state power amplifier adopts a space power synthesis technology, an input / output interface adopts a waveguide form, the inside is of a waveguide microstrip conversion structure, and a signal transmitted in the waveguide is converted to a microstrip line, is amplified and then is radiated to the waveguide through a micro strip to waveguide structure. The structural form reduces transmission loss, increases synthesis efficiency, reduces the size and lowers thermal design difficulty.

The invention discloses a small Ku waveband 120W power amplifier, which belongs to the technical field of communication electronics, and comprises a power distribution network, four amplifiers and a power synthesis network, and solves the technical problems of low efficiency and small output power of power synthesis after single-tube amplification by adopting a two-stage four-path power distribution synthesis network. The power amplifier has the advantages of high output power and small size, the reliability of the power amplifier is improved, the service life of the power amplifier is prolonged, the power consumption during saturated output is less than 600 W, and the power consumption during working in a linear region is less than 450 W. a new waveguide synthesis circuit and a new waveguide-micro-strip double-probe combined power distribution synthesis network is adopted, the power distribution synthesis network not only can compress and synthesize the spatial size, but also is highin power synthesis efficiency, low in loss, simple to process, compact in structure and capable of bearing larger output power.

The invention provides a prismatic multi-path power distributor / synthesizer based on a fan-shaped branch microstrip line. The prismatic multi-path power distributor / synthesizer based on the fan-shaped branch microstrip line is wholly prismatic and comprises a power distribution section and a power synthesis section, wherein the power distribution section and the power synthesis section are of the same structure, electromagnetic waves enter a cavity through an input end coaxial connector, and synthesized high-power signals are output from the cavity through an output end coaxial connector. An impedance deploy hole is punctured in a microstrip planar circuit of a fan-shaped branch power distribution / synthesis structure, the isolation among branches can be improved, the whole structure is connected through microstrip patches, and therefore the power distribution / synthesis structure can achieve a wide work frequency band. According to the requirement of actual power synthesis, by reasonably designing the size and position of the impedance deploy hole and the radius of the fan shape, equal-power distribution of all the branches can be achieved, and different power distribution / synthesis path numbers can be achieved conveniently according to the needs.

The invention discloses a power dividing horn antenna and the related array for spatial power combining. The power dividing horn antenna comprises a power distributing radiation aperture, a matching transition section and a waveguide feed line, which are connected in order and seamlessly to form the antenna; wherein, the power distributing radiation aperture comprises a hollow rectangular waveguide and a shaped metal wedge arranged on the wide edge of the hollow rectangle, and the shaped metal wedge divides the aperture of the hollow rectangular waveguide into two same parts; the power distributing horn antenna array used for spatial power combining comprises at least two power distributing horn antennas arranged together tightly. The invention has the advantages that when being used solely, a power distributing horn can provide a higher gain than a normal horn antenna with the same aperture because of an improved electromagnetic field distribution on the aperture; the power distributing horn antenna array prevents grating lobes from generating when increasing the size of the antenna array, which increases significantly the aperture and gain of the spatial power combining antenna,and the effectiveness of power combining.

A Ka-waveband power combiner based on SIW (Substrate Integrated Waveguide) belongs to the technical field of microwave / millimeter wave devices, and comprises an input signal power dividing structure and a power combining output structure, wherein the input signal power dividing structure comprises a first-stage Y-shaped microstrip line halving power divider and a second-stage half-model substrate integral waveguide halving power divider; and the two half-model substrate integral waveguide halving power dividers are arranged back to back and output towards two external sides; the power combining output structure comprises two half-model substrate integral waveguide power combiners and one half-model-full-model substrate integral waveguide power combiner; the power combiners have a structure of being symmetrical relative to center lines; and the two half-model substrate integral waveguide power combiners form a semi-encircling structure for the two half-model substrate integral waveguide halving power dividers, so that the power combining output structure and the input signal power dividing structure form an embedded combination, thus realizing structurally tightening. The Ka-waveband power combiner has the advantages of small size, excellent performance, low cost, light weight, easiness for transplanting and convenience in integration.

The invention discloses a millimeter-wave multi-channel space waveguide power distribution synthesizer and a method. The power distributor comprises a four-channel waveguide power distributors and four two-channel waveguide power distributors, a first port, four second ports and a first power allocation part are arranged in the four-channel waveguide power distributor, the first power allocation part is used for dividing one path of signal of electromagnetic wave into four paths of signals in equal proportion, a third port, two fourth ports and a second power allocation part are arranged in the each two-channel waveguide power distributor, the third port is connected with each second port, the second power allocation part is used for further dividing the four paths of signals into eight paths of signals in equal proportion, each path of signal is separately subjected to power amplification, the single path of signal subjected to amplification pass through the power synthesizer having the same structure with the power distributor, and multi-path power synthesis of electromagnetic signals are completed. The millimeter-wave multi-channel space waveguide power distribution synthesizer has the advantages of wide band, high capacity, high isolation, high efficiency, low loss and the like.

The invention discloses a Ka frequency band miniaturization waveguide three-path equipower distribution synthesizer and belongs to the field of millimeter-wave power synthesis. The Ka frequency band miniaturization waveguide three-path equipower distribution synthesizer is achieved through a waveguide structure and comprises a radio frequency input port, a radio frequency tuning post and a radio frequency output port, wherein after the radio frequency tuning post divides two paths of radio frequency signals with the power ratio of 1:1 into four paths, the power ratio is 2:1:1:2, and after two middle paths of signals with the power ratio of 1 are synthesized, the four paths of signals with the power ratio of 2:1:1:2 are changed into three paths of signals with the power ratio of 2:2:2. The Ka frequency band miniaturization waveguide three-path equipower distribution synthesizer resolves the problem that the power distribution or synthesis process of a traditional three-path power distribution or synthesis network is achieved by two stages, so that the size is large; the structure has the advantages of being convenient to machine and install, small in size, quite low in insertion loss, convenient to achieve and the like; the path number of the power distribution / synthesis network can be flexibly controlled in actual application, and the Ka frequency band miniaturization waveguide three-path equipower distribution synthesizer is widely applied to a high-power synthesis amplifier.

The invention discloses a novel high-altitude stealth structure. The novel high-altitude stealth structure is formed by a plurality of parallel metal plates with equal intervals, wherein all metal plates are the same in size; the lengths of the metal plates are integer multiples of operating wavelengths; a rectangular air region exists in the middle of a shell structure enclosed by the metal plates for placing hidden objects. Shapes and materials of the hidden objects can be arbitrarily selected. The stealth shell structure is located at a high-altitude position during working. When an external observer is at the position at a certain distance from the lower part of the stealth shell structure, the whole structure and the objects placed in the rectangular region are invisible to the outside world. The novel high-altitude stealth structure is convenient to implement, wide-angle effective working can be implemented and the observer cannot perceive while observing at an arbitrary positionat the lower part of the stealth structure.

The invention relates to a magnetron automatic phase modulation device, system and method based on injection frequency locking. The magnetron automatic phase modulation device comprises a signal source, a magnetron, a circulator and a controller. The signal source is used for transmitting an injection signal, and the injection signal is used for adjusting the frequency of a signal output by the magnetron; the magnetron is used for receiving the injection signal subjected to phase adjustment and adjusting the frequency of the signal output by the magnetron according to the frequency of the injection signal; the controller is used for comparing the change of the phase difference between the injection signal emitted by the signal source and the magnetron output signal, obtaining an adjustment variable through a neural network algorithm, and adjusting the phase of the injection signal based on the adjustment variable. The invention aims to realize rapid and accurate regulation and control and efficient and stable power synthesis of the output phase of a high-power magnetron by constructing a phase real-time feedback control system based on an artificial intelligence algorithm, and meet the requirements of microwave wireless energy transmission and other applications on a high-power and high-efficiency magnetron microwave source.

The invention provides a high-isolation radial power synthesis amplifier with broadband air micro-strips, which comprises a high-isolation radial power divider / synthesizer with broadband air micro-strips and at least one power amplifier module. The high-isolation radial power divider / synthesizer with the broadband air micro-strips comprises an input waveguide, a coaxial transition structure, a radial waveguide, the radial air micro-strips and at least one output waveguide, wherein the coaxial transition structure is arranged between the input waveguide and the radial waveguide, the center of the radial waveguide is connected with the input waveguide through the coaxial probe transition structure, the air micro-strips in radial distribution are connected to the periphery of the radial waveguide, a film resistor disc is pasted between each two adjacent air micro-strips, and each air micro-strip is connected with one output waveguide. The high-isolation radial power synthesis amplifier with the broadband air micro-strips can realize high-efficiency broadband power synthesis with one-division multiplexing and in single-mode operation.

The invention provides an integrated millimeter-wave multi-passage active transmitting antenna device and a phase compensation method of the same, wherein the antenna device comprises a millimeter-wave arrayed antenna and a multi-passage active transmitting module, the compensation method belongs to the active antenna technical field and comprises a micro-strip line, a loading medium and a metal box body. The antenna device adopts an integrated structure, and the active transmitting antenna device is not provided with any active phase-shifting apparatus inside. The phase compensation method between passages is to use the micro-strip line which plays a cascade role at a pre-stage input port of a power amplifier to load a medium with a high dielectric constant. Phase error compensation in arange between zero and three hundred and sixty degrees can be realized by selecting different loading mediums without affecting the uniformity of amplitude. The antenna device and the phase compensation method have the advantages of simple debugging, exquisite design and miniaturization, etc., and is an antenna device and phase compensation method with strong operability and practicality.

The invention discloses a C-band space power synthesis solid-state power amplifier, which relates to the fields of satellite and microwave communication. The solid-state power amplifier is composed of an upper chamber, an H-shaped intermediate pressure block and a lower chamber, the upper chamber and the lower chamber are symmetrically arranged up and down, and have the same structure. The upper cavity is equipped with an upper substrate, which consists of a microstrip printed board, two power amplifier units, four microstrip isolators, four isolator pressing blocks, two power amplifier unit pressing blocks and four through-hearts Capacitor structure, wherein, the upper substrate has an axisymmetric structure with respect to the connection line of the two power amplification units. The invention adopts the space power synthesis technology, the input and output interface adopts waveguide form, and the waveguide microstrip conversion structure is adopted inside, the signal transmitted in the waveguide is converted to the microstrip line, and after amplification, it is radiated into the waveguide through the microstrip-to-waveguide structure . This structural form reduces the transmission loss, increases the synthesis efficiency, reduces the volume, and reduces the difficulty of thermal design.

The invention discloses a method and system used for improving Terahertz wave power by using power synthesis and based on phase synchronization. The system comprises a digital control circuit, phase-locked loop frequency synthesizing circuits, a frequency doubling filtering circuit, a power amplification circuit, an avalanche pipe high order frequency doubling structure and a power synthesizing module. The four phase-locked loop frequency synthesizing circuits are regulated and controlled through the digital control circuit, and four branches of signals correct in frequency and adjustable in phase are generated and changed into excitation signals meeting requirements through the frequency doubling filtering circuit and the power amplification circuit. The excitation signals are subjected to high order frequency doubling through an avalanche pipe to obtain the expected TeraHertz wave frequency, by adjusting four branches of excitation signal phases, the four branches of TeraHertz wave signals can achieve phase synchronization, four branches of TeraHertz waves synchronous in phases are subjected to power synthesis through the power synthesizing module, and a purpose of improving the Terahertz wave power is achieved.

The invention relates to a space power synthetic antenna of a curve array feed source bifocal parabolic reflecting surface, comprising a reflecting surface and a feed source array. The reflecting surface of the antenna is a bifocal parabolic reflecting surface formed by a parabola with a shorter focal length on the horizontal plane along another parabola with a longer focal length on the vertical surface, the feed source array is a parabola curve feed source array formed by aligning a plurality of horn antennae on a parabola which is formed by translating the parabola with the longer focal length to the focus of the parabola with the shorter focal length, the phase of each horn antenna is set according to the Huygens-Fresnel principle, and each horn antenna achieves the maximum in-phase synthesis in the maximum radiation direction. Radiation generated by the space power synthesis of the feed source array irradiates the bifocal parabolic reflecting surface which reflects electromagnetic waves to form a needed wave beam so as to improve the antenna gain. The antenna is simple in structure and has high gain.

The invention provides a millimeter wave miniaturized multichannel transceiving component device and a phase compensation method thereof. The transceiving component device of the invention comprises a transmitting branch, a receiving branch, a switch, a power splitting circuit and a metal box body, belonging to the radar component technical field. The transceiving component device is realized by a millimeter wave periplanatic integrated circuit based on MMIC (millimeter wave monolithic integrated circuit) technology, and no source phase-shift device is arranged inside a transceiving component. The interchannel phase compensation method of the invention is to utilize a micro strip loading high dielectric constant medium which plays a part in cascade connection in the transceiving component. Phase error compensation within the range of 0 to 360 DEG can be realized by selecting different loading media, and the amplitude consistency is not affected. The invention has the advantages of simple and convenient debugging, skillful design, miniaturization and so on and is a transceiving component device with strong operability and effectiveness and a phase compensation method thereof.