38results about How to "In-band flat" patented technology

The invention discloses a distributed miniature band-pass balance filter which comprises a surface mounted 50-ohmage resistance input port, four parallel resonance units, two surface mounted 75-ohmage resistance output ports and a grounded terminal. The input port is connected with the first-stage parallel resonance unit. The two output ports are connected with two strip lines of the fourth-stage parallel resonance unit respectively. The strip lines of the first-stage parallel resonance unit, the second-stage parallel resonance unit, the third-stage parallel resonance unit and the fourth-stage parallel resonance unit are respectively grounded at one end and provided with an open circuit at the other end. Two ends of two Z-shaped interstage coupling strip lines are both grounded. The distributed miniature band-pass balance filter has the advantages of being small in size, light in weight, high in reliability, excellent in electrical performance, simple in circuit implementation structure, low in cost and convenient to use and install.

The invention discloses a mini active microwave and millimeter wave self-loading I/Q variable phase reversal orthogonal filter, which comprises a single-pole double-throw switch chip KD102010040, a low-noise amplifier chip WFD022036-L12, a surface mount 50-ohm impedance input/output interface, a parallel resonance unit module implemented through a strip line structure, a broadside coupled strip line of a double helix structure and a matched load connected to an isolated port, wherein the structures are implemented by adopting a multilayer low-temperature co-fired ceramic technology (LTCC technology). The mini active microwave and millimeter wave self-loading I/Q variable phase reversal orthogonal filter has the advantages of no external load, variability, phase reversal orthogonality, small insertion loss, easiness in debugging, light weight, small volume, high reliability, good electrical property, good temperature stability, low cost, mass production and the like, and is applied to communication, satellite communication and the other occasion at the corresponding millimeter wave frequency band have strict requirements on the volume, the electrical property, the temperature stability and the reliability and corresponding systems.

The invention discloses a high-performance distributed 3100-3400 MHz miniature band-pass filter. The band-pass filter comprises an input/output interface and six parallel resonance units, the input/output interface is suitable for surface mounting, the six parallel resonance units are obtained through a strip line structure, and the input/output interface and the six parallel resonance units are all achieved through a multilayer low-temperature cofired ceramic technology. The band-pass filter has the advantages of being wide in frequency coverage range, small in insertion loss, light in weight, small in size, high in reliability, good in electric performance, phase-frequency characteristic linearity, temperature stability and electric performance batch consistency, low in cost, capable of being massively produced, and suitable for communication, digital radars, wireless communication handheld terminals and corresponding systems and other occasions in the requirements for sizes, electric performance, temperature stability and reliability within corresponding microwave frequency bands are demanding.

The invention discloses a supernormal medium ultrahigh frequency band pass filter, and relates to a wireless communication microwave filter, and the filter can be used for solving the problem that the working frequency range of the existing supernormal medium filter is mainly below 10GHz. The filter comprises a plurality of split ring resonators, a metal bar, a No.1 capacitor, a No.2 capacitor, a base, an air groove, a No.1 signal line, a No.2 signal line and an earth wire; the neutral line part of the lower surface of the base is provided with the rectangular air groove upward; the metal bar is bonded at the middle of the top of the air groove; the split ring resonators consist of inner rings and outer rings which are made of a same material; the plurality of split ring resonators are ranked into a line and are placed on the upper surface of the base right above the metal bar in a non-contact mode; the right end of the No.1 signal line is communicated with the outer rings of the ring resonators at the left end of a split ring resonator array; the left end of the No.2 signal line is communicated with the outer rings of the split ring resonators at the right end of the ring resonator array; the left end of the No.1 signal line is an input end, and the right end of the No.2 signal line is an output end, and the No.1 signal line and the No.2 signal line are used for filtering harmonic waves and restraining stray in a wireless communication system.

The invention discloses a miniature microwave and millimeter wave I/Q filter which comprises a microwave and millimeter wave filter in a strip line structure, and a directional coupler, wherein the microwave and millimeter wave filter comprises a surface-mounted input interface, and six-stage parallel resonance units realized in strip line structures; the directional coupler comprises a surface-mounted output interface, and wide side coupling strip lines in double spiral structures; and the structures are realized by a multi-layer low-temperature co-fired ceramic technology. The filter has the advantages that a quadrature phase can be generated; and the filter is easy to debug, low in insertion loss, light in weight, small in size, high in reliability, good in electrical property, good in temperature stability, good in electrical property batch consistency and low in cost, and facilitates large-batch production. The filter is applicable to occasions and corresponding systems with strict requirements for the size, the electrical property, the temperature stability and the reliability, such as corresponding millimeter wave band communication and satellite communication.

The invention discloses a microwave band-pass filter which comprises a substrate with through holes and a magnetic photonic crystal which is composed of a plurality of permanent magnetic ferrite columns. The permanent magnetic ferrite columns are arranged in the through holes. The microwave band-pass filter has the filter characteristics of being wide in frequency band, high in out-of-band rejection, and smooth in band, and meanwhile has the advantages of being small in size, simple in structure, easy to process, low in cost, easy to achieve, and the like.

The invention relates to a UHF waveband miniature duplexer comprising a three-port isolation circuit and two microwave filters of different frequency bands. Microwave filters comprise output ports with surface mounting of 50ohm impedance, parallel resonant units which are realized by integrated inductors and capacitors via parallel connection, and resonant units which are formed by comb lines. The aforementioned structure is realized by adopting a multilayer low-temperature co-fired ceramic process technology. The UHF waveband miniature duplexer has advantages of being each to debug, low in weight, small in size, high in reliability, great in electrical property, great in temperature stability, great in electrical property batch consistency and low in cost so that the UHF waveband miniature duplexer can be mass produced and is suitable for occasions and corresponding systems with strict requirements for the size, electrical property, temperature stability and reliability, such as communication of the corresponding microwave frequency bands and satellite communication.

The invention discloses an S-band miniature double-microwave external load orthogonal power divider, which comprises an external load directional coupler and two miniature microwave power dividers, wherein the external load directional coupler comprises a first input port, a straight-through port, a coupling port, an isolated port, a first input inductor, a broadside coupled strip line and three output inductors, the broadside coupled strip line is of an upper-lower-layer double helix structure, the straight-through port of the external load directional coupler is connected with an input port of the first microwave power divider, and the coupling port is connected with an input port of the second microwave power divider; and the two miniature microwave power dividers are each composed of a specific compact structure and a three-dimensional integrated structure, and are implemented by adopting a multi-layer low-temperature co-fired ceramic technology. The power of four paths of output signals of S-band miniature double-microwave external load orthogonal power divider is the same, the S-band miniature double-microwave external load orthogonal power divider has the advantages of being capable of generating quadrature phases, being easy to debug, having small insertion loss and the like, and is suitable for systems of corresponding microwave frequency bands, such as communication and satellite communication systems.

The invention relates to a UHF and SHF waveband miniature duplexer. The duplexer comprises a three-port isolation circuit and two microwave filters with different frequency bands. Each microwave filter comprises an output port, a parallel resonant unit and a resonance unit, wherein a 50 ohm impedance is mounted on a surface of the output port; the parallel resonant unit is realized through connecting total inductance capacitors in parallel and the resonance unit is formed by a pectinate line. The above structure is realized through using a multilayer low-temperature co-fired ceramic technology. The duplexer possesses the advantages that debugging is easy; the weight is light; the size is small; reliability is high; electrical performance is good; temperature stability is good; electrical property batch consistency is good; cost is low; mass production can be achieved and so on. The duplexer is suitable for occasions of communication of a corresponding microwave frequency band, satellite communication and the like and a corresponding system, wherein there are strict requirements to the size, the electrical performance, the temperature stability and the reliability in the occasions.

The invention relates to an S-band microwave quadrature power divider which comprises a microwave power divider and two directional couplers. The microwave power divider is composed of a specific compact structure and a three-dimensional integrated structure. The directional coupler comprises a surface-mounted input/output port and double-helix structured broadside coupled striplines. The above structures are realized by a multilayer low-temperature co-fired ceramics technology. According to the invention, four routes have the same output signal power. The power divider can generate quadrature phase, is easy to debug, is light in weight, has high reliability, good electrical property, good temperature stability and good electrical property batch consistency, is low-cost, can be used for mass production and is suitable for occasions and corresponding systems of corresponding microwave frequency band communication, satellite communications and the like which have strict requirements on volume, electrical property, temperature stability and reliability.

The invention relates to a VHF (very high frequency) &UHF (ultra high frequency) band type miniature microwave filter bank. The miniature microwave filter bank comprises a single-pole tripe-throw switch chip MS-SMA-033 and three microwave filters with different frequency bands, wherein each microwave filter comprises input/output ports with surface mounted 50 ohmage impedance and parallel resonance units formed through parallel connection of lumped inductance capacitors. The structures all adopt a multi-layer LTCC (low temperature co-fired ceramic) technology. The miniature microwave filter bank has the advantages of easiness in debugging, light weight, small size, high reliability, good electrical property, good temperature stability, good batch consistency of electrical property, low cost, capability of realizing mass production and the like, and is applicable to occasions and corresponding systems, with strict requirements for size, electrical property, temperature stability and reliability, for communications in corresponding microwave frequency bands, satellite communications and the like.

The invention discloses an L-shaped wave band miniature balance filtering power dividing device, comprising a balance filter and two miniature microwave power dividers. The balance filter comprises a first input terminal, a first input inductor, four stages of parallel connection resonance units which are connected in order, a first output inductor, a second output inductor, an Z-shaped interstage coupling strip-shaped wire, a first output terminal, and a second output terminal; the first output terminal of the balance filter is connected to the input terminal of the first microwave power divider; the second output terminal is connected to the input terminal of the second microwave power divider; the two miniature microwave power divider is structured by a compact 3D integrated structure; and the above structure adopts the multi-layer low temperature co-fired ceramic technology to realize. The L wave band miniature balance filtering power dividing device has identical output signal power of four paths, is capable of generating a quadrature phase, easy to debug, small in insertion loss, and is applicable to the corresponding microwave band communication and the satellite communication system.

An S-wave band miniature balanced filter power divider disclosed by the present invention comprises a balanced filter and two miniature microwave power dividers, wherein the balanced filter comprises a first input port, a first input inductor, six-stage successive connected parallel resonant unit, a first output inductor, a second output inductor, a Z-shaped interstage coupling strip line, a first output port and a second output port. The first output port of the balanced filter is connected with the input port of the first microwave power divider, and the second output port is connected with the input port of the second microwave power divider. The two miniature microwave power dividers are composed of the compact three-dimensional stereo integrated structures. The above structures are all realized by a multi-layer low temperature co-fired ceramic technology. The S-wave band miniature balanced filter power divider of the present invention has four output signals of same power, has the advantages of being able to generate the quadrature phase, being easy to debug, being small in insertion loss, and is suitable for a system of the corresponding microwave frequency band, such as a communication system, a satellite communication system, etc.

The present invention relates to an L-band minisize double microwave orthogonal power divider, comprising a directional coupler and two minisize microwave power dividers; wherein the directional coupler comprises input/output ports which are arranged in a surface mounting way, and broadside coupled strip lines with double-spiral structures; the two minisize microwave power dividers are formed by a specific compact structure and a three-dimensional integration structure, and the above structures are all achieved through a multi-layer low temperature co-fired ceramic technology. The L-band minisize double microwave orthogonal power divider of the present invention has four output signals with the same power, and has the advantages of capacity of generating quadrature phase, easy debugging, light weight, small volume, high reliability, good electrical performance, good temperature stability, good batch consistency of electrical performance, low cost, batch production and so on, thus the L-band minisize double microwave orthogonal power divider is suitable for the occasions in which communication and satellite communication at a corresponding microwave frequency band have strict requirements for volume, electrical performance, temperature stability and reliability and corresponding systems.