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

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 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 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.