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

The invention discloses a miniature microwave and millimeter wave self-load I / Q (In-phase / Quadrature) filter which comprises a microwave and millimeter wave filter in a strip line structure and a directional coupler connected with a matched load, 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 connected with the matched load comprises a surface-mounted output interface, wide side coupling strip lines in double spiral structures, and a matched load connected at an isolation port; and the structures are realized by a multi-layer low-temperature co-fired ceramic technology. The filter has the advantages that external load connection is not required; 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 miniature active microwave and millimeter wave I / Q variable phase reversal quadrature filter. The filter comprises a single-pole double-throw switch chip WKD102010040, a low-noise amplifier chip WFD022036-L12, a 50-ohm resistance input / output interface attached to the surface, a parallel resonance unit module of a strip line structure, and a broadside coupling strip line of a dual-spiral structure. The above-mentioned structures are all obtained through the multi-layer low-temperature cofired ceramics technology (LTCC technology). The filter has the advantages of being variable, capable of achieving phase reversal quadrature, low in insertion loss, easy to adjust, light in weight, small in size, high in reliability, good in electrical performance, high in temperature stability, low in cost, capable of being produced on a large scale and the like, and is suitable for occasions with strict requirements of communication, satellite communication and the like in corresponding millimeter wave frequency bands for the size, electrical performance, temperature stability and reliability, and suitable for corresponding systems.

The invention provides a microwave millimeter-wave external-load multi-orthogonal inverse filter comprising a directional coupler and two microwave millimeter-wave filters. The directional coupler comprises two different large-rim coupling strip lines, of double-spiral structures, on parallel planes. Six levels of parallel resonance units are arranged in each microwave millimeter-wave filter. One level of the parallel resonance units, close to the directional coupler, is connected with the directional coupler through an input inductor. The microwave millimeter-wave external-load multi-orthogonal inverse filter is small in size, high in reliability, excellent in electrical performance, high in batch uniformity and stable in temperature performance, can output four columns of multi-orthogonal inverse signals with the same width, and meets various needs.

The invention discloses a microstrip line-slot line structure-based ultra-wideband filter, which comprises a rectangular dielectric substrate (101), wherein a metal ground plate (102) is arranged on the lower surface of the rectangular dielectric substrate (101); an input port feeder (1), an output port feeder (2), a stepped impedance resonator (4), a first open-circuit uniform transmission line of a terminal (5) and a second open-circuit uniform transmission line of the terminal (6) which are parallel to a narrow side of the dielectric substrate (101) are arranged on the upper surface of the dielectric substrate (101); a linear slot line (3) parallel to a wide side of the dielectric substrate (101) is arranged on the metal ground plate (102); two ends of the stepped impedance resonator (4) are connected with the metal ground plate (102) through plated-through holes; and the input port feeder (1) and the output port feeder (2) are equidistantly arranged at two sides of the stepped impedance resonator (4) respectively. The ultra-wideband filter disclosed by the invention has a good rectangle coefficient on a trapped wave, and is good in out-of-band rejection, simple in structure and low in processing cost.

The invention relates to a miniature high-performance dual-zero dual-mode ultra-narrowband filter, including input / output ports, input and output inductors, source and load coupling striplines, and three dual-mode resonators implemented using a stripline structure. The structure is realized by multi-layer low-temperature co-fired ceramic technology. The invention has the advantages of wide frequency coverage, narrow relative bandwidth, small insertion loss, light weight, small volume, high reliability, good electrical performance, good temperature stability, good batch consistency of electrical performance, low cost, and mass production, etc. , suitable for narrowband communication systems that have strict requirements on volume, electrical performance, temperature stability and reliability, such as communications in radio frequency, microwave and millimeter wave bands, and satellite communications.

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 relates to a novel three-dimensional miniature dual-mode broadband filter, including input / output ports, internal interfaces, interface-coupled striplines and a dual-mode resonant stage realized by using a stripline structure. Ceramic technology is realized. The invention has the advantages of wide frequency coverage, small insertion loss, light weight, small volume, high reliability, good electrical performance, good temperature stability, good batch consistency of electrical performance, low cost, and mass production, and is suitable for radio frequency , microwave and millimeter wave frequency band communication, satellite communication and other communication systems that have strict requirements on volume, electrical performance, temperature stability and reliability.

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 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.