Microstrip filter having group hairclip structure for microwave communication

A technology of microstrip filter and hairpin structure, which is applied to waveguide-type devices, waveguides, radio relay systems, etc., can solve problems such as quality factor reduction, and achieve improved sensitivity, good frequency selectivity, and steep high-pass band edges. degree of effect

Inactive Publication Date: 2005-03-30
海泰超导通讯科技(天津)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The resonator directions of this filter structure are all in the same direction. In order to shorten the entire resonator length, the capacitance part o...

Method used

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  • Microstrip filter having group hairclip structure for microwave communication
  • Microstrip filter having group hairclip structure for microwave communication
  • Microstrip filter having group hairclip structure for microwave communication

Examples

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Embodiment

[0028]Embodiment: a kind of group type hairpin structure microstrip filter for microwave communication is characterized in that it is made of input microstrip 52, output microstrip 53 and the first resonator 56 and the last resonator that accept direct excitation 57 and multiple groups of hairpin resonator groups 51 with opposite directions, the same number and direction in each group, and an effective length of half a wavelength. The input 52 and output 53 of the filter are microstrips and The first resonator 56 and the last resonator 57 are directly connected.

[0029] The shapes of the resonators 51a and 51b in the hairpin resonator group 51 with opposite directions, the same number and the same direction in each group and the effective length of half wavelength can be the same or different.

[0030] The distance L1 between the resonators 51a and 51b in the hairpin resonator group 51 with opposite directions, the same number and the same direction in each group, and an effe...

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Abstract

The microstrip filter is composed of input and output microstrips, first and last resonators of receiving direct excitation as well as multiple groups of hair clip type resonators with effective length in half wave length. In each group, number and direction of resonator are same, and directions are different between groups. Input and output microstrips in filter are connected to first and last resonators in filter directly. Couple between resonators is weak in same group since their directions are identical, and Couple between resonators in different groups is stronger. Thus, number of resonators is same group can be adjusted smartly in order to suite filter in different filters designed I different bandwidths. The invention is applicable to traditional plane type metal microstrip filer, also filter in high-temperature superconductor having high quality.

Description

(1) Technical field: [0001] The invention relates to a band-pass filter suitable for microwave communication, in particular to a microstrip filter with group hairpin structure suitable for microwave communication. (two) background technology: [0002] For a long time, the filter has played an extremely important role in the processing of electronic signals, and it has the function of filtering the signal of the frequency used and suppressing the interference signal. With the rapid development of microwave wireless communication, higher and higher requirements are placed on the electrical performance of filters. The high-temperature superconducting filter technology developed in recent years is well adapted to this demand. Since the high-temperature superconducting film has a high quality factor (Q value), the microstrip filter made of high-temperature superconducting film, It has extremely low insertion loss and excellent frequency selection characteristics (high passband e...

Claims

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Application Information

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IPC IPC(8): H01P1/20H01P3/08H04B7/14
Inventor 季来运陈勤文
Owner 海泰超导通讯科技(天津)有限公司
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