High-selectivity suspended strip line ultra-wideband filter

An ultra-wideband filter, high selectivity technology, applied in the filter field

Inactive Publication Date: 2021-03-02
常州仁千电气科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The square coefficient describes the steepness of the response curve of the filter near the cutoff frequency, and is a parameter that characterizes the selectivity of the filter. The traditional way to impro

Method used

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  • High-selectivity suspended strip line ultra-wideband filter
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  • High-selectivity suspended strip line ultra-wideband filter

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Embodiment Construction

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

[0031] In the description of the present invention, it should be noted that the terms belonging to "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orientation. construction and operation, therefore, should not be construed as limiting the invention.

[0032] In the descriptio...

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Abstract

The invention relates to the technical field of filters, in particular to a high-selectivity suspended strip line ultra-wideband filter which comprises a metal shell body, a dielectric plate and a microstrip line structure, wherein the microstrip line structure comprises connecting units and middle units, each connecting unit comprises a high-impedance inductance microstrip and a low-impedance capacitance microstrip at least located on one side of the high-impedance inductance microstrip, each middle unit comprises a high-impedance inductance micro-strip and low-impedance capacitance micro-strips located on the two sides of the high-impedance inductance micro-strip, the two connecting units and the multiple middle units are arranged at the top and the bottom part of the dielectric plate inan up-down staggered mode, every two adjacent low-impedance capacitance micro-strips correspond to each other in the thickness direction of the dielectric plate to form a capacitance part, the connecting end of at least one connecting unit is sequentially connected with the high-impedance inductance microstrips and the low-impedance capacitance microstrips in series, and/or at least one intermediate unit is sequentially connected with the high-impedance inductance microstrips and the low-impedance capacitance microstrips in series, and a corresponding transmission zero point is generated in astop band of the filter. According to the high-selectivity suspended strip line ultra-wideband filter, the zero cavity technology is introduced for the first time, and the rectangular coefficient ofthe filter can be improved.

Description

technical field [0001] The invention relates to the technical field of filters, in particular to a high-selectivity suspended stripline ultra-wideband filter. Background technique [0002] With the rapid development of wireless communication, the division between channels is getting finer and finer. The microwave filter used to separate useful and useless signals has become an important component in the communication system, and its performance directly affects the quality of the entire communication system. Now, microwave filters have been widely used in various fields such as microwave communication, microwave guidance, navigation, telemetry, remote control, satellite communication, and military electronic countermeasures, and the requirements for microwave filters are getting higher and higher. The development trend of broadband and miniaturization of communication systems puts forward higher and higher requirements for filters. [0003] Suspended stripline is a superior...

Claims

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Application Information

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IPC IPC(8): H01P1/20
CPCH01P1/20
Inventor 王勇冯青山
Owner 常州仁千电气科技股份有限公司
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