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Miniature microwave millimeter wave i/q quadrature filter

An orthogonal filter and millimeter wave technology, applied in the field of filters, can solve the problem of not having orthogonal functions, and achieve the effects of light weight, simple circuit implementation structure and low cost

Inactive Publication Date: 2017-05-17
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Moreover, the filter used in the traditional situation does not have an orthogonal function, but is realized by an external orthogonalizer

Method used

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  • Miniature microwave millimeter wave i/q quadrature filter
  • Miniature microwave millimeter wave i/q quadrature filter
  • Miniature microwave millimeter wave i/q quadrature filter

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Embodiment Construction

[0011] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0012] combine figure 1a, 1b, 1c, a miniature microwave and millimeter wave I / Q quadrature filter of the present invention, the microwave and millimeter wave filter of the orthogonal filter includes a surface-mounted 50 ohm impedance input port P1, a first input inductance Lin1 , the first level parallel resonant unit L11, L21, L31, C1, the second level parallel resonant unit L12, L22, L32, C2, the third level parallel resonant unit L13, L23, L33, C3, the fourth level parallel resonant unit L14 . The level parallel resonant units are composed of three layers of striplines, the second layer of striplines is vertically above the third layer of striplines, the first layer of striplines is vertically above the second layer of striplines, and the first level of parallel resonance Units L11, L21, L31, and C1 are formed by parallel connection of the first striplin...

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Abstract

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.

Description

technical field [0001] The invention relates to a filter, in particular to a miniature microwave and millimeter wave I / Q quadrature filter. Background technique [0002] In recent years, with the rapid development of miniaturization of mobile communication, satellite communication and national defense electronic systems, high performance, low cost and miniaturization have become the development direction of the microwave / radio frequency field. The performance, size and reliability of microwave filters Both sex and cost have put forward higher requirements. In some cutting-edge defense equipment, the current frequency bands are quite crowded, so cutting-edge equipment such as satellite communications are developing towards the millimeter-wave band, so microwave millimeter-wave band filters have become key electronic components in the receiving and transmitting branches of this band, described The main indicators of the performance of this component are: passband operating fr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P1/203
Inventor 戴永胜周围李雁周衍芳杨茂雅
Owner NANJING UNIV OF SCI & TECH
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