An adjustable dual-mode filter

A filter and resonator technology, which is applied in the field of tunable dual-mode filters, can solve the problems of limited application range and limited tuning range of tunable filters, and achieves small size, high Q value, and small passband insertion loss. Effect

Pending Publication Date: 2019-01-18
CHINA ELECTRONICS TECH GROUP CORP NO 16 INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The tuning range of traditional tunable filters is limited, and the tuning range of the center frequency is only about 20% to 30%, which limits its application range

Method used

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  • An adjustable dual-mode filter
  • An adjustable dual-mode filter
  • An adjustable dual-mode filter

Examples

Experimental program
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Embodiment Construction

[0018] The present invention will be further described below in conjunction with accompanying drawing:

[0019] Such as figure 1 The shown adjustable dual-mode filter includes a substrate 17, a transmission main line 3 and a grounding strip 6 arranged on the substrate 17 in sequence, and a substrate 17 arranged between the transmission main line 3 and the grounding strip 6 and connected to the transmission main line The three-phase coupled key resonator 4 and the bias voltage unit 7 arranged on the substrate 17 between the transmission main line 3 and the grounding strip 6 and connected to the key resonator 4 . The grounding strip 6 is located on the upper surface of the end portion of the substrate, and the outside of the grounding strip 6 is flush with the side of the substrate 17 .

[0020] The key resonator 4 includes a coupling part 13, a grounding part 14 connected between the middle section of the coupling part 13 and the grounding belt 6, a branch one 15 and a branch ...

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Abstract

Ann adjustable dual-mode filter comprises a substrate, a transmission main line and a ground plane arranged on the substrate in sequence, a key resonator arranged on the substrate between the transmission main line and the ground plane and coupled with the transmission main line, and a bias voltage unit arranged on the substrate between the transmission main line and the ground plane and connectedwith the key resonator. The key resonator includes a coupling part, a grounding part connected to between a middle section of the coupling part and a grounding plane, a branch section 1 and a branchsection 2 arranged on the same side of the grounding part in parallel, and a variable capacitance connected between the branch section 1 and the branch section 2. The bias voltage unit comprises a voltage input terminal, a resistor, a first connection terminal, a capacitor and a second connection terminal in series. The connecting terminal 2 is connected with the branch 1 through the superconducting wire. The filter of the invention has dual-mode specificity, the center frequency is continuously adjustable, and the frequency tuning range is extremely wide, and the tuning range is greater than80%.

Description

technical field [0001] The invention relates to the technical field of microwave communication, in particular to an adjustable dual-mode filter. Background technique [0002] The traditional tunable filter has a limited tuning range, and the center frequency tuning range is only about 20% to 30%, which limits its application range. In various fields of microwave applications, there is a strong demand for tunable filters with a wider range of tunability. Contents of the invention [0003] The purpose of the present invention is to provide an adjustable dual-mode filter, the filter has a dual-mode characteristic, its center frequency is continuously adjustable, and the adjustment range is greater than 80%. [0004] To achieve the above object, the present invention adopts the following technical solutions: [0005] An adjustable dual-mode filter, comprising a substrate, a transmission main line and a grounding strip sequentially arranged on the substrate, a key resonator a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/203
CPCH01P1/20381
Inventor 刘洋王生旺左涛宾峰孙文娟王曦雯张梅石磊杨时红
Owner CHINA ELECTRONICS TECH GROUP CORP NO 16 INST
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