Micro-strip double-mode band-pass filter

A technology of filters and mode bands, applied in waveguide devices, electrical components, circuits, etc., can solve the problems that the performance of microstrip dual-mode filters cannot meet the requirements, and achieve the effect of excellent performance

Inactive Publication Date: 2011-10-19
SHANGHAI MARITIME UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] However, the performance of the existing microstrip dual-mode filter cannot meet the requirements, so providing a microstrip dual-mode filter with superior performance is an urgent problem in this field.

Method used

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  • Micro-strip double-mode band-pass filter
  • Micro-strip double-mode band-pass filter
  • Micro-strip double-mode band-pass filter

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Embodiment Construction

[0023] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0024] see figure 1 , the circular slotted patch dual-mode microstrip bandpass filter provided by the present invention includes a circular patch 1 . In order to realize the dual-mode bandpass filter, the present invention adopts two feeders 4 that are perpendicular to each other on a common circular patch 1, and simultaneously offers a slot 2 (as a perturbation) on the circular patch 1, and Two notches 3 are symmetrically opened on both sides of the feeder 4 to reduce the center frequency of the band-pass filter.

[0025] The present invention further optimizes the above solution, wherein the slots 2 are rectangular and arranged obliquely relative to the feeders 4 that are perpendicular to each other.

[0026] Furthermore, the notch 3 in the ...

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PUM

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Abstract

The invention discloses a micro-strip double-mode band-pass filter, comprising a round chip, wherein the round chip is connected with two feeder lines which are vertical mutually; the round chip is provided with a slotted hole; and two notches are arranged at two sides of each feeder line symmetrically. In the micro-strip double-mode band-pass filter, the round chip is slotted so as to realize a double-mode band-pass filter. The performances of the micro-strip double-mode band-pass filter are superior to those of other shaped band-pass filters.

Description

technical field [0001] The invention relates to microwave communication technology, in particular to a microstrip dual-mode bandpass filter. Background technique [0002] From the perspective of the development of telecommunications, filters have always played an important role in microwave circuits, using more passive components, and have made continuous progress with the development of communication technology. [0003] From a practical point of view, miniaturization is an important research topic for all handheld electronic devices, such as portable mobile phones. In the radio frequency part, although the emergence of monolithic microwave integrated circuits (MMIC) indicates that the miniaturization of radio frequency active circuits such as amplifiers, modulators, and frequency converters is becoming more and more possible. However, there are many open problems in optimizing the size reduction of circuits containing resonators, such as RF filters and oscillators. There...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/203
Inventor 张友俊张吉曜
Owner SHANGHAI MARITIME UNIVERSITY
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