54 results about "Microstrip circuits" patented technology

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 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 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.

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 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.

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 rectangular waveguide-microstrip three-path power divider comprises a waveguide body and a microstrip circuit, the microstrip circuit is located in the waveguide body, the waveguide body is provided with a rectangular waveguide port and a shielding cavity, and a waveguide short-circuit surface is manufactured at the terminal of the rectangular waveguide port; the microstrip circuit comprises a dielectric substrate, fan-shaped probes are symmetrically arranged on the dielectric substrate, each fan-shaped probe is sequentially connected with an impedance conversion line, a low-impedance branch line and a first 50-ohm microstrip line, the low-impedance branch line is further connected with a high-impedance branch line, and the end of the high-impedance branch line is connected with a second 50-ohm microstrip line. After being input from the rectangular waveguide port, a microwave signal is efficiently coupled to the microstrip circuit under the combined action of the fan-shaped probe and the waveguide short-circuit surface; after impedance matching is carried out on signals through the impedance conversion lines, the signals are distributed to the low-impedance branch lines and the high-impedance branch lines, the signals distributed to the low-impedance branch lines are output from the first 50-ohm microstrip line, and the signals in the two high-impedance branch lines are output from the second 50-ohm microstrip line.

The invention discloses a microstrip circuit of a circulator, the circulator and electronic equipment. The circuit comprises a central junction circuit used for distributing radio frequency signals among a plurality of ports and forming a directional transmission path of the radio frequency signals under the action of a magnetic circuit structure of the circulator; the plurality of matching circuits are connected between the central junction circuit and the plurality of ports and are used for matching impedance between the central junction circuit and the plurality of ports; the at least one resonance elimination circuit is connected with the matching circuit in parallel and used for guiding and consuming out-of-band harmonic energy, and the electrical length of the resonance elimination circuit is determined based on the wavelength of the radio frequency signal; the resonance elimination circuit further comprises an energy absorption device which is arranged at the open circuit end of the resonance elimination circuit and used for consuming out-of-band harmonic energy. The effect of improving the out-of-band harmonic interference resistance of the circulator is achieved.

The invention relates to the technical field of microwave ferrite devices, and discloses an X-band miniaturized microstrip ferrite circulator, which comprises a magnetic conductive sheet, a ferrite substrate, a microstrip circuit, a ceramic sheet, a permanent magnet and the like. And the ferrite substrate and the positioning boss are integrally formed, so that the number of parts is reduced, the weight is reduced, the space occupied by an assembly gap is avoided, and the product reliability is enhanced. The microstrip circuit is arranged on the upper surface of the ferrite substrate, the upper surface of the microstrip circuit is provided with the single Y-shaped disc central section and uniformly provided with the fan-shaped regions and the grooves, the circulator function is realized on the surface of the limited substrate, and the occupied area of the circuit is reduced. The ceramic chip and the permanent magnet are sequentially arranged on the upper surface of the micro-strip circuit, all the components are stacked, excessive occupation of transverse space is avoided, the overall structure is simplified, the material consumption is reduced, the production cost is reduced, the weight is reduced, the overall size and weight burden of the system are effectively reduced, and stable operation of the system is guaranteed.

The present invention belongs to the field of antenna technology and discloses a high-precision positioning antenna, comprising: an antenna substrate, a ground potential metal plate, and a feeder circuit. The antenna substrate includes a first surface and a second surface. The first surface is a metal surface connected to a signal source via a feeder circuit to simultaneously excite two mutually orthogonal current resonance modes on the first surface. The second surface is symmetrically provided with at least four metal pads, from which microstrip circuits extend for controlling the antenna's resonant frequency and matching its impedance. The ground potential metal plate extends at least four metal legs, each of which is welded to a corresponding metal pad on the second surface of the antenna substrate, generating electric field line reflections with the first surface. The present invention achieves miniaturization and lightweighting of the antenna while enhancing the antenna's upward radiation gain.

The invention provides an adjustable microwave device test clamp which comprises an interlayer, a first sliding block, a second sliding block, a first fixing nut, a second fixing nut, a first sliding block adjusting bolt, a second sliding block adjusting bolt, a first SMA connector and a second SMA connector. The first sliding block adjusting bolt and the first fixing nut jointly form a first lead screw structure to adjust the relative position of the interlayer and the first sliding block. The second sliding block adjusting bolt and the second fixing nut jointly form a second lead screw structure so as to adjust the relative position of the interlayer and the second sliding block. The micro-strip circuit is installed on the interlayer, the first sliding block and the second sliding block, a tested component is placed on the micro-strip circuit, and the positions of the first sliding block and the second sliding block relative to the interlayer are adjusted by adjusting the first sliding block adjusting bolt and the second sliding block adjusting bolt so that the tested component can be matched with the micro-strip circuit in size. According to the technical scheme, the technical problems that in the prior art, packaging sizes of microwave devices are diversified, the same testing clamp needs to be developed independently, a large amount of manpower and material resources are consumed, and the testing period is prolonged are solved.

The invention provides a low-loss high-isolation micro-strip bridge for a Ku-band narrow-band measurement and control system. The low-loss high-isolation micro-strip bridge comprises a dielectric substrate and a micro-strip pattern structure on the dielectric substrate, the micro-strip pattern structure comprises two main lines, two branch lines and four micro-strip feeder lines; the two main lines are arranged in parallel, and the two branch lines are arranged in parallel; the two branch lines are located between the two main lines and are perpendicular to the two main lines respectively. The width of the four microstrip feeder lines is smaller than that of the main line; the four microstrip feeder lines are divided into two groups and are respectively connected with two ends of the two main lines. The Ku band-pass filter has the advantages that excellent low insertion loss, high port isolation and good port return loss are realized at the same time in a specific narrowband working frequency of a Ku band, and the inherent advantages of miniaturization, easy integration and low cost of a microstrip circuit are kept at the same time.

The application provides a cross-coupled microstrip filter vibrator antenna and an array thereof, and belongs to the field of large phased array radar systems, and comprises an antenna feed port, a reflector plate, a suspended cross-coupled microstrip circuit board, a filter cover plate and metal vibrator arms. The filter cover plate is located on the upper surface of the reflector plate and forms a suspended air cavity together with the reflector plate. The suspended cross-coupled microstrip circuit board is located in the suspended air cavity. The inner conductor of the antenna feed port extends into the suspended air cavity and is connected with the suspended cross-coupled microstrip circuit board. The outer conductor is connected with the reflector plate. The metal vibrator arms are located on the filter cover plate. One of the metal vibrator arms is connected with the suspended cross-coupled microstrip circuit board, and the other is grounded. The radiation characteristics are realized directly on the filter cover plate. The suspended broadband high-pass filter is used to realize high suppression of the lower sideband. The original filtering performance of the filter is not changed, the profile height is basically maintained, a wider working bandwidth is realized, and the interference problem of a secondary radar on a primary radar is solved.

The utility model relates to the technical field of antennas, and discloses a satellite positioning patch antenna, comprising a substrate, the substrate is provided with a first surface and a second surface, the first surface is provided with a plurality of metal pads, the metal pads extend to form a microstrip line, and the second surface is a metal conductive surface; the edge of the metal patch is provided with a metal foot part corresponding to the metal bonding pad, and the metal foot part is correspondingly welded and connected with the metal bonding pad; and a signal feed foot part is arranged on the metal patch. According to the utility model, the miniaturization of the cavity resonance structure is realized, and the weight problem of the ceramic antenna is solved.