68 results about "Microstrip circuits" patented technology

The invention provides a composite ferrite circulator and electronic equipment, the composite ferrite circulator comprises a first bias magnetic circuit assembly, a ceramic gasket, a composite material substrate and a second bias magnetic circuit assembly which are sequentially arranged along a first direction, and one side, close to the ceramic gasket, of the composite material substrate is provided with a microstrip circuit; one side, close to the second bias magnetic circuit assembly, of the composite material substrate is provided with a grounding metal layer, the composite material substrate comprises a ceramic dielectric substrate, the surface of the ceramic dielectric substrate is provided with a cylindrical ferrite penetrating along the first direction, and the outer side of the cylindrical ferrite is sequentially sleeved with a plurality of circular ring ferrites; the saturation magnetization intensity of the cylindrical ferrite and the saturation magnetization intensity of the circular ferrite are sequentially reduced from inside to outside. According to the scheme, a higher relative bandwidth of the circulator can be realized, and the non-reciprocal transmission performance of the circulator is improved, so that the overall working performance of the electronic equipment is improved.

The invention discloses a transmission type one-bit phase metasurface unit for 5G millimeter waves, and belongs to the field of reconfigurable metasurfaces. The two sides of the receiving patch of the unit are respectively bridged with two PIN diodes which are arranged in the same direction; the radiation patch is respectively connected with the receiving patch and the metal ground through the metal through hole and the metal blind hole; a direct-current bias microstrip circuit and a metal ground which are separated by a semi-solidified substrate are arranged between the two dielectric plates, and the direct-current bias microstrip circuit is connected with the two rectangular patches through metal blind holes. Therefore, the center of the receiving patch is equipotential with the metal ground, and the two sides of the receiving patch are equipotential with the direct-current microstrip circuit, so that the two PIN tubes are always in opposite conduction conditions when the voltage is changed. When the state changes, the induction current directions of electromagnetic waves on the upper surface receiving patch are opposite, and transmission electromagnetic waves excited on the lower surface radiation patch through the metalized through holes generate a phase difference approximate to 180 degrees. The one-bit transmission phase regulation of 5G millimeter waves is realized, and the method has important application prospects in the fields of wireless communication, beam forming and the like.

The invention provides a cross coupling microstrip filtering oscillator antenna and an array thereof, and belongs to the field of large phased array radar systems.The cross coupling microstrip filtering oscillator antenna comprises an antenna feed port, a reflecting plate, a suspended cross coupling microstrip circuit board, a filter cover plate and metal oscillator arms, the filter cover plate is located on the upper surface of the reflecting plate, and a suspended air cavity is defined by the filter cover plate and the reflecting plate; the suspended cross-coupled microstrip circuit board is located in the suspended air cavity, an inner conductor of the antenna feed port extends into the suspended air cavity to be connected with the suspended cross-coupled microstrip circuit board, an outer conductor of the antenna feed port is connected with the reflecting plate, and the metal oscillator arm is located on the filter cover plate. One radiation arm in the metal oscillator arms is connected with the suspended cross-coupled microstrip circuit board, and the other radiation arm is grounded; the radiation characteristic is directly realized on the filter cover plate, and a wider working bandwidth is realized under the conditions that the lower sideband of the suspended broadband high-pass filter is high in suppression, the original filtering performance of the filter is not changed and the profile height is basically kept, so that the problem of interference of an auxiliary radar on a main radar is solved.

The invention discloses a stacked miniaturized broadband circulator, and belongs to the technical field of microwave passive radio frequency device engineering. The problems that an existing circulator is narrow in working bandwidth, large in size, large in insertion loss and the like are solved. Through the vertical interconnection technology, the matching line circuit and the central junction circuit are designed on different layers of dielectric substrates, so that the size of the circulator is greatly reduced, and the size under the relative center frequency is only 0.14 lambda0 * 0.14 lambda0. And the metal ground is designed between the two substrates, so that the two layers of microstrip circuits share one layer of metal ground, and the structure is simplified. And according to a simulation result, the performance is very excellent, the insertion loss is kept within 1dB in a broadband, and the return loss is kept below-15dB. Compared with an existing circulator, the circulator provided by the invention effectively overcomes the technical problems of antenna receiving and transmitting integration, inter-stage isolation and the like, and has the remarkable advantages of small size, simple design scheme and excellent performance.

The invention discloses a composite ultra-wideband circulator based on a LiZnTi ferrite homogeneous structure. The composite ultra-wideband circulator sequentially comprises a ferrite substrate, a ferrite cylinder and a microstrip circuit from bottom to top, the ferrite cylinder is nested in the ferrite substrate, and the microstrip circuit is arranged on the upper surface of the ferrite cylinder; the ferrite substrate comprises a magnetizing body and a non-magnetizing body, and the magnetizing body is of a circular structure surrounding the ferrite cylinder; the microstrip circuit is of a single Y junction structure and comprises a sheet-shaped central round junction and three extending ends evenly distributed in the circumferential direction of the sheet-shaped central round junction, and each extending end sequentially comprises a coupling line, a converter and a microstrip line outwards with the sheet-shaped central round junction as a node. And the sheet-shaped central round knot is arranged at the center of the upper surface of the ferrite cylinder. Compared with a single ferrite circulator, the LiZnTi ferrite composite ferrite structure circulator provided by the invention has the advantage that the bandwidth is improved by 18.4%.

The present invention discloses a non-magnetic simultaneous transmit and receive (STAR) duplexer for terahertz communication and sensing integration, which includes a dielectric substrate, a microstrip stepped impedance filter, varactor diodes, terahertz signal input / output ports, modulation signal input ports, ground ports, and a Y-shaped microstrip transmission line connection. Through the design of distributed parameter circuits, the present invention overcomes the problem of mismatch of the non-magnetic STAR duplexer with lumped parameter circuits at high frequencies. The main structure of the present invention is composed of a microstrip circuit. The ports connecting the external modulation signal and the ground port include lumped element filters. The overall structure is simple and easy to process and integrate.

The utility model discloses a microstrip directional coupler, and belongs to the technical field of couplers. A single-layer microstrip circuit is adopted, the antenna comprises a microstrip coupling structure, the microstrip coupling structure comprises a first tooth-shaped structure, multiple sections of tooth-shaped microstrip structures are arranged on the first tooth-shaped structure, and the distance between every two tooth-shaped microstrip structures is a preset distance; the first tooth-shaped structure is provided with a second tooth-shaped structure opposite to the first tooth-shaped structure, so that the coupling amplitude is balanced; the two ends of the first tooth-shaped structure and the two ends of the second tooth-shaped structure are connected with microstrip lines, the microstrip lines of the four ports enter the first tooth-shaped structure and the second tooth-shaped structure, and then the line width is reduced, so that port standing waves are optimized. The crossing depth of the tooth-shaped micro-strip structures on the first tooth-shaped structure and the second tooth-shaped structure is a preset depth, and the length is a preset length, so that the size of the micro-strip directional coupler is within a preset size; the first tooth-shaped structure and the second tooth-shaped structure are used for balancing the amplitude of a coupling signal and optimizing the directivity of the coupling signal.

The invention relates to the field of microwave technology and electronic devices, and particularly discloses a surface-mounted microstrip circulator with a shielding cavity, which comprises a shielding body provided with six caulking grooves uniformly distributed at intervals along the circumferential direction, the shielding cavity is formed on the shielding body, and a partition plate is arranged in the shielding cavity to divide the shielding cavity into an upper cavity and a lower cavity which are relatively isolated; the gyromagnetic ferrite is arranged in the lower cavity, the gyromagnetic ferrite is fixedly connected to the partition plate, and the corners of the gyromagnetic ferrite are correspondingly embedded into the caulking grooves; the microstrip circuit is arranged below the gyromagnetic ferrite, and the microstrip circuit is provided with three ports; three conductive connecting bodies, wherein each conductive connecting body is correspondingly and electrically connected with each port; the permanent magnet is arranged in the upper cavity and is used for providing a bias magnetic field for the gyromagnetic ferrite; and the cover plate is connected to the shielding body so as to package the permanent magnet in the upper cavity. Therefore, electromagnetic field distribution can be optimized, high-order mode and spurious resonance can be effectively suppressed, and good rigidity and heat dissipation capability can be achieved.

The invention discloses a resonance regulation and control system based on symmetry control. The resonance regulation and control system comprises a low-symmetry metal spiral structure and an excitation microstrip circuit. The low-symmetry metal spiral structure is composed of four metal spiral arms, and the four metal spiral arms have two different lengths. The excitation microstrip circuit sequentially comprises a metal strip, a dielectric substrate layer and a metal ground plane; the resonator introduces an electromagnetic resonance mode excited by a first-order current through the asymmetric design of a low-symmetry metal spiral structure, and realizes the regulation and control of resonance characteristics.

The invention discloses a high-performance broadband band-stop filter, and relates to the technical field of filters, and the filter comprises a microstrip circuit and a shielding cavity. The microstrip band-stop filter is composed of a novel spiral stepped impedance resonance unit and cascade transmission lines with different impedances, and in order to reduce the area of the filter, a spiral low-impedance structure of the resonance unit and a main transmission path are bent. The filter has the advantages that in order to suppress spurious coupling and surface waves introduced by the spiral structure and expand the upper passband, the parasitic conductor sheets are introduced between the resonance units, miniaturization of the filter is achieved, and the comprehensive high performance of the wide upper passband, high suppression depth and low insertion loss is obtained.

The invention discloses a high-isolation triplexer, which belongs to the radio frequency field of communication technology, and comprises a dielectric substrate, the surface of the dielectric substrate is provided with a microstrip circuit, and the microstrip circuit comprises an input feeder line, an output feeder line, a J converter and improved composite resonators loaded at the two ends of the J converter; one end of the J converter is connected with the input feeder line, and the other end of the J converter feeds the improved composite resonator; the improved composite resonators are coupled in a gap mode; a metal ground and a low-pass filter are arranged on the bottom surface of the dielectric substrate, the low-pass filter comprises an inductor, a capacitor device and a coplanar waveguide circuit, and the coplanar waveguide circuit is connected with a common port on the surface of the dielectric substrate through a metal via hole. The band-pass channel formed by the improved composite resonator has good in-band and out-of-band performance, and the low-pass filter formed by the capacitor, the inductor and the coplanar waveguide circuit achieves the suppression effect of 0.5-4.5 GHz larger than 20dB.

The utility model provides a three-frequency microstrip combiner with a power division network, which comprises a dielectric substrate provided with ports. The copper-clad layer is arranged on the lower surface of the dielectric substrate; the microstrip circuit is arranged on the upper surface of the dielectric substrate and electrically connected with the port, the microstrip circuit comprises a low-frequency shunt, an intermediate-frequency shunt and a high-frequency shunt, the high-frequency shunt is connected with the port and the intermediate-frequency circuit, and the intermediate-frequency circuit is connected with the low-frequency circuit; wherein a signal is input to the high-frequency shunt through the port, and is shunted to the intermediate-frequency shunt and the low-frequency shunt through the high-frequency shunt. According to the utility model, the low-frequency shunt, the intermediate-frequency shunt and the high-frequency shunt are combined to form the microstrip network, so that the requirement of a three-frequency combiner antenna can be met, the size of the combiner is smaller due to three-frequency combination, and the production cost of the combiner is effectively reduced.

The present invention provides a plastic vibrator unit and an antenna, which relates to the technical field of antenna components. In order to solve the technical problems in the prior art that the vibrator has high cost, inconvenient installation, and cannot meet the 5G frequency band, the technical solution of the present invention is as follows: comprising: a plastic substrate and a plastic vibrator, the plastic substrate and the plastic vibrator are integrally formed by plastic processing, a plurality of plastic vibrators are evenly distributed on the plastic substrate in an array, a first copper microstrip circuit is arranged on the upper surface of each plastic vibrator, and the first copper microstrip circuit forms a first rectangular window with four continuous sides; a second copper microstrip circuit is arranged on the lower surface of each plastic vibrator, and the second copper microstrip circuit forms a second rectangular window with four segmented sides. The plastic vibrator unit in the present invention has the effects of high front-to-back ratio, high cross-polarization ratio, high isolation and ultra-wideband in the radiation direction, and can meet the performance requirements of 5G communication technology.

A PIN diode electrically controlled attenuation circuit comprises a radio frequency main link and a direct current bias circuit, the positive electrode of a PIN diode D1 is connected with the negative electrode of a PIN diode D2 through a microstrip circuit 1, and the negative electrode of the PIN diode D1 is connected with one end of a capacitor C1; the positive electrode of the PIN diode D4 is connected with the negative electrode of the PIN diode D3 through the microstrip circuit 4, and the negative electrode of the PIN diode D4 is connected with one end of the capacitor C2; the positive electrode of the PIN diode D2 is connected with one end of the microstrip circuit 2, the positive electrode of the PIN diode D3 is connected with one end of the microstrip circuit 3, and the other end of the microstrip circuit 2 is connected with the other end of the microstrip circuit 3; a driving current Ic is connected with one end of a capacitor C3 and one end of a resistor R6, the other end of the resistor R6 is connected with one end of an inductor L4, the other end of the inductor L4 is connected to one end of an inductor L3 and one end of a capacitor C4, the other end of the capacitor C3 and the other end of the capacitor C4 are respectively grounded, the other end of the inductor L3 is connected with one end of a resistor R5, and the other end of the resistor R5 is connected with the other end of the microstrip circuit 2 and the other end of the microstrip circuit 3. The circuit is simple, the attenuation dynamic range is enlarged, and attenuation stability is improved.

The application discloses a passive and active hybrid circuit capable of reconstructing four microwave functions, wherein the resistance, the capacitance and the transistor of the upper layer are reasonably placed on the microstrip line, and are made on the upper surface of the intermediate dielectric layer together with the PIN diode; the lower surface of the dielectric layer is connected with the metal grounding surface, and the size of the metal grounding surface is completely consistent with the size of the lower surface of the dielectric layer. Through the control of the forward and reverse voltage of the PIN diode, the conduction and the disconnection of the diode can be realized, the on-off of the microstrip circuit can be realized, and the function reconstruction of the device can be realized; the function reconstruction device comprises four functions, which are respectively an antenna, a filter, a power amplifier and a mixer, and the filter is a 3-order band-pass filter; the function reconstruction device has the advantages of compact structure, high port multiplexing rate, wide application range, high integration degree, quick switching among the four functions, and independent working in time-sharing mode without affecting each other.

The utility model belongs to the microwave device technical field discloses a kind of microwave multilayer board intervertical interconnection circuit structure, including cavity, microwave multilayer board and radio frequency glass insulator;Microwave multilayer board is fixed in the two sides of cavity, glass insulator is set on the extension structure parallel to microwave multilayer board in cavity geometric center, and microwave multilayer board forms air coaxial structure, for being connected with microstrip circuit by bonding mode and realizing the matching transmission of microwave signal, the vertical interconnection of microwave multilayer board radio frequency circuit is completed.The utility model forms air coaxial structure between radio frequency glass insulator and microwave multilayer board to realize circuit matching, more simple than prior art using circuit mode matching.And gold wire bonding mode can realize automation assembly and improve assembly efficiency.

The utility model discloses a non-surface metal magnetization easy-to-assemble microstrip isolator, which comprises a microstrip circuit (2) fixed on the upper surface of a ferrite substrate (1), a main circuit (21), a compensating circuit (22), a signal metal conduction band (23), a high-frequency impedance line (24), a matching circuit (25) and an open-circuit line (26) which are connected with one another, and soft gold is plated on the surfaces of the circuits. A signal metal conduction band (23) of the third port (2c) is connected with an open-circuit line (26) right facing the third port (2c) through a thin-film resistor (5). The ceramic substrate (3) is glued in the circular groove magnetization area (1a) on the lower surface of the ferrite substrate (1) through epoxy resin glue, and the permanent magnet (4) is connected to the ceramic substrate (3) through epoxy resin glue. The utility model has the advantages of few assembly steps, simplified number of parts, high reliability and small volume, reduces the space proportion of the communication module in the whole machine, and is suitable for surface mounting and microcircuit integration.

The utility model relates to microstrip circuit technical field discloses a kind of microstrip circuit and radio frequency coding device based on multimode radio frequency coding, including the phase-shift coding unit being connected between quadrature power divider and combiner, phase-shift coding unit includes the absorption modal microstrip line for modal coding, positive modal microstrip line and negative modal microstrip line, the coding modal needed is selected by modal selection switch, wherein, positive modal microstrip line is straight-through microstrip line, output phase is synchronous with input phase, terminal short circuit line is also connected on straight-through microstrip line, two sections are set apart in terminal short circuit line, and it is L type bending structure, the bending section of two L type bending structures is parallel with positive modal microstrip line, and opposite direction is oriented.The utility model can effectively reduce the dispersion effect of straight-through microstrip line in wide frequency band by setting terminal short circuit line on the straight-through microstrip line of positive modal microstrip line, and improve broadband performance.

The present invention provides an ultra-wideband 2-bit phase reconfigurable reflectarray and an electromagnetic wave regulation method, belonging to the field of novel artificial electromagnetic materials. The array is composed of a two-dimensional periodic arrangement of units consisting of tightly coupled antennas and active microstrip circuits. PIN diodes and varactor diodes are integrated into the active microstrip circuits on the back of the units. By utilizing the on-off characteristics of the PIN diodes and the varactor characteristics of the varactor diodes, the units are enabled to have the ability to regulate four different phase states within the ultra-wideband range, and the phase difference between each phase state is 90°. By performing 2-bit phase encoding on different units in the array, functions such as scattered beam focusing, scattered beam deflection, low electromagnetic scattering, and electromagnetic signal simulation can be achieved. The present invention has the advantages of 2-bit reflection phase reconfigurability, ultra-large working bandwidth, and easy system integration, and has important application prospects in the fields of ultra-wideband radar electronic countermeasures and interference.

The utility model discloses a log-periodic antenna, which belongs to the technical field of radar communication, and comprises a radio frequency cable assembly, a PCB (printed circuit board), an antenna body and a base, the radio frequency cable assembly consists of a radio frequency coaxial connector and a radio frequency cable, the radio frequency coaxial connector is a standard SMA-J radio frequency coaxial connector, the PCB is provided with a microstrip circuit, and the antenna body is connected with the base. One side of the microstrip circuit is used for being connected with a radio frequency cable core wire of a radio frequency cable, the other side of the microstrip circuit is used for being connected with an antenna body, a plurality of grounding holes are symmetrically formed in the root of the PCB, and the grounding holes are used for being connected with a cable outer shielding layer of the radio frequency cable. Compared with an existing structure, the antenna body radiator and the radio frequency cable assembly are integrally welded, fusion welding can be adopted between the PCB and the antenna body, in addition, the coupling part of the antenna microstrip line is welded with the cable feed part, the radiation efficiency of the antenna is remarkably improved, and the antenna radiation efficiency is improved. And the whole antenna adopts a symmetrical design, so that the uniqueness of the antenna in an array panel and the stability of antenna indexes are ensured.

This invention discloses a suboctave band equalization structure and a method for optimizing in-band flatness based on it, relating to the technical field of microwave circuits. The suboctave band equalization structure consists of a 50-ohm microstrip line, an absorption resistor, and a high-impedance line. The high-impedance line employs an S-shaped bend structure to reduce volume, and the absorption resistor's geometric dimensions are adjusted to precisely control the equalization depth. This invention utilizes the transmission characteristics of a resonator exhibiting high insertion loss at the center of the band and gradually decreasing insertion loss at both sides when the fundamental frequency reaches the second resonant frequency. This complements the transmission characteristics of a filter, which has low insertion loss in the center of the passband and gradually increasing insertion loss at both sides. This application can significantly improve in-band flatness by physically canceling passband edge losses through passive microstrip circuits while ensuring high matching performance with return loss better than -20dB. It has advantages such as simple structure, easy integration, and strong engineering applicability.

The invention discloses a microstrip band-stop filter with a wide upper passband, and relates to the technical field of radio frequency passive devices, and the microstrip band-stop filter comprises an electromagnetic shielding cavity, a dielectric substrate, a microstrip circuit located on the front surface of the dielectric substrate, and a grounding metal layer located on the back surface of the dielectric substrate. The microstrip circuit is composed of an input feeder line, an output feeder line and a four-stage cascade filter network located between the input feeder line and the output feeder line. The stopband center frequencies of the four filtering units are distributed in a staggered manner so as to broaden the stopband bandwidth; each filtering unit is composed of two U-shaped micro-strips and an interdigital capacitor, and symmetrical rectangular split ring resonators loaded with the interdigital capacitors and double-path arc-shaped parallel micro-strip lines are adopted at the interstage connecting positions of the filtering units respectively. According to the invention, the low insertion loss, high selectivity and miniaturization design of the filter are realized, and the technical problem that the existing band elimination filter is difficult to adapt to a complex and changeable signal environment due to the limited passband width is solved.

A miniaturized broadband microstrip circulator provided by the present invention comprises a metal base plate, a gyromagnetic medium substrate, a microstrip circuit, a ceramic spacer and a permanent magnet, the gyromagnetic medium substrate is installed on the metal base plate, the microstrip circuit is installed on the gyromagnetic medium substrate, the ceramic spacer is installed on the microstrip circuit, and the permanent magnet is installed on the microstrip circuit. And the permanent magnet is mounted on the ceramic spacer. By designing the gyromagnetic medium substrate, the gyromagnetic medium substrate is no longer made of a single gyromagnetic material. The microstrip circulator has the advantages of being small in size and wide in bandwidth, miniaturization and broadband of the microstrip circulator are achieved, and the microstrip circulator is suitable for a microwave assembly of a large-scale micro-assembly technology.

The utility model relates to the technical field of microwave devices, in particular to an ultra-wideband microstrip isolation circulator, a high-precision magnetron sputtering microstrip circuit of the ultra-wideband microstrip isolation circulator has stability and consistency, and the magnetization uniformity is effectively improved by adopting a ceramic substrate mode; the overall bandwidth of the device is effectively improved through the multiple ferrite nesting mode, the performance of the device capable of meeting quadruplicated frequency is achieved, and the working bandwidth is expanded by three times; according to the full-ferrite microstrip isolation circulator, the thinned permanent magnet piece and the thinned ceramic piece are arranged on the upper portion of the full-ferrite microstrip isolation circulator, the weight of the device is reduced, the overall height of the device is effectively reduced, it is guaranteed that the telecommunication performance is not affected, and compared with a traditional full-ferrite microstrip isolation circulator of the same size, the adopted high-dielectric ceramic substrate and high-power gyromagnetic ferrite piece materials have the advantages that the cost is low; the power capacity is improved by at least three times, the size is reduced by half, and the working bandwidth is doubled.

The invention discloses a microstrip annular isolation assembly based on a composite nested substrate, and belongs to the technical field of microwave components. The antenna comprises a slide, a radio frequency resistor, a composite nested substrate, a microstrip circuit layer, a protection sheet and a permanent magnet, the microstrip circuit layer is arranged on the composite nested substrate, the protection sheet is arranged on the microstrip circuit layer, the permanent magnet is arranged on the protection sheet, the composite nested substrate and the radio frequency resistor are arranged on the slide, the radio frequency resistor is electrically connected with the microstrip circuit layer, and the microstrip circuit layer is electrically connected with the permanent magnet. The composite nested substrate is formed by nesting three layers of different-material double knots, the three layers of different-material double knots are sequentially an outer layer plate, a ferrite outer ring and a ferrite inner cylinder from outside to inside, and the magnetic moment of the ferrite is sequentially increased from outside to inside. According to the invention, triple frequency work, high isolation, miniaturization and high stability can be taken into account, so that more application scenes can be met.

The application discloses a four-mode reconfigurable microstrip line filter integrated with reflection-free and multi-zero-point response, which adopts a single microstrip circuit topology with left-right symmetry and is composed of an upper branch band-pass filter circuit, a T-shaped joint structure, a pair of cross-shaped absorption branches, a pair of coupled line absorption branches, five groups of switch pairs and input and output ports; the coupled lines at the two ends of the upper branch band-pass filter circuit are connected with the ground through the switch pair connection ports and the T-shaped joint structure, and the absorption branches are connected with the ports in parallel through the switches; the four-mode switching of double-band rejection, full-band reflection-free band-pass, full-band reflection-free band-stop and multi-transmission zero-point band-stop is realized in the same circuit through the on-off control of the switches; the integration degree is improved; the reflection-free characteristic of the band-stop energy dissipation is realized by relying on the resistance-loaded absorption branches; the frequency selectivity and the band-stop suppression capability are strengthened in combination with the multi-transmission zero points; and the problems of low resource reuse rate, lack of reflection-free characteristic and uneven multi-mode performance of the traditional structure are solved.

A combined planar radiator near-field antenna comprises a radiator PCB, a microstrip circuit feed PCB, and vertical metal feed posts connecting the radiator PCB and the microstrip circuit feed PCB. A combined planar radiator is provided on the upper surface of the radiator PCB, the combined planar radiator comprising a plurality of metal copper foils, each provided with a soldering via. The microstrip circuit feed PCB is provided with a microstrip distribution circuit, the microstrip distribution circuit being provided with a microstrip feed port and a plurality of metal feed post feed points. Compared with the prior art, the present invention has the beneficial effects of: using the combined planar radiator as the basic radiator facilitates achieving a large and stable near-field radiation area, and each metal copper foil is connected using an independent metal feed post feed point. The microstrip distribution circuit is used to sequentially configure corresponding feeding phases and equal-amplitude feeding levels to achieve circularly polarized operating characteristics.

The present invention relates to a fully polarized antenna for covering the upper hemisphere airspace, and belongs to the field of antenna technology. Its structure includes a microstrip antenna, a dipole loop antenna, a monopole antenna, a radome, a metal bottom plate and other parts. The microstrip antenna includes two layers of microstrip circuit boards placed orthogonally, two groups of signal connectors, and square metal patterns are etched on the upper surfaces of the two layers of microstrip circuit boards. The dipole loop antenna includes a microstrip circuit board with a "swastika"-shaped metal pattern etched on the front and back sides, a feeding coaxial line and a feeding signal connector. The monopole antenna includes a hollow copper column, a feeding microstrip circuit board and a feeding signal connector. It can achieve full polarization coverage in the zenith direction and the horizontal direction of the upper hemisphere space, which is of great significance to improving the channel capacity and transmission rate of the communication system.

A Ku-band self-biased circulator belongs to the field of microwave ferrite device technology. The circulator includes a composite substrate and a microstrip circuit formed on the composite substrate; wherein the composite substrate includes a secondary dielectric sheet and an array of ferrite rods nested within the secondary dielectric sheet, the array of ferrite rods being composed of nested array of ferrite rods and a primary dielectric substrate. This invention, by employing a composite substrate structure with array of ferrite rods nested within a primary dielectric substrate, effectively reduces the influence of demagnetizing fields through the placement of the rod-shaped ferrites. The synergistic generation of multiple rod-shaped ferrites produces a stable bias magnetic field, providing good control over the device's operating frequency range. While maintaining non-reciprocal characteristics, it significantly reduces magnetic loss in the Ku-band, thereby reducing insertion loss.

The utility model discloses a de-embedding circuit used for obtaining millimeter wave peripheral circuit characteristic parameters. The de-embedding circuit comprises a PCB, a millimeter wave test circuit arranged on the PCB, and a de-embedding circuit which carries out mirror image setting with the millimeter wave test circuit on the PCB by taking a mirror image reference surface as a reference. The system further comprises S parameter measuring equipment; the S parameter measurement device is connected with the millimeter wave test circuit and the de-embedding circuit. According to the utility model, the influence of a microstrip circuit and a connector on a millimeter wave chip channel on a chip device can be eliminated.