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Toroidal cavity resonator based ultra wide band (UWB) notch filter

An ultra-wideband filter and ring resonator technology, applied in the field of filters, can solve the problems of inconvenient expansion, narrow stopband bandwidth, complicated processing, etc., and achieve the effects of flexible and diverse structural design, small size, and easy integration.

Active Publication Date: 2015-03-11
广州桑瑞科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantages of the above methods include narrow and uncontrollable stopband bandwidth, complex processing, and inconvenient expansion to achieve double notch characteristics. Therefore, a new type of notch structure is needed to achieve a wide and easy-to-control notch. method

Method used

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  • Toroidal cavity resonator based ultra wide band (UWB) notch filter
  • Toroidal cavity resonator based ultra wide band (UWB) notch filter
  • Toroidal cavity resonator based ultra wide band (UWB) notch filter

Examples

Experimental program
Comparison scheme
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Embodiment

[0031] Such as figure 1 As shown, it consists of a microstrip substrate 10, a front part, a back part and an input / output port; The grounded metal floor 15 of the filter; there are two input / output ports, namely the first input / output port 1 and the second input / output port 6 .

[0032] Such as figure 2As shown, the front part includes: a first uniform transmission line unit 2, a second uniform transmission line unit 5, a first parallel coupled feeder 3, a second parallel coupled feeder 4, a stub-loaded ring resonator 7, a first stopband Unit 8, second stop band unit 9; the first uniform transmission line unit 2 and the second uniform transmission line unit 5 are respectively located at the left and right ends of the front and on the same horizontal line, the first input / output port 1 and The first uniform transmission line 2 is connected, the second input / output port 6 is connected to the second uniform transmission line 5; the first parallel coupled feeder 3 and the secon...

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PUM

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Abstract

The invention discloses a toroidal cavity resonator based ultra wide band (UWB) notch filter which comprises a micro-strip substrate, a front face part, a reverse face part, and input\output terminals. The toroidal cavity resonator based UWB notch filter is characterized in that the front face part and the reverse face part are respectively located on the two faces of the micro-strip substrate, the reverse face part is used as a metal grounding plate of the filter, the number of the input\output terminals is two, and the input\output terminals are respectively a first input\output terminal and a second input\output terminal. The toroidal cavity resonator based UWB notch filter has the advantages of being small in size, wide in band, good in out-of-band rejection, controllable in model, good in notch properties, and the like.

Description

technical field [0001] The invention relates to the technical field of filters, in particular to a ring resonator-based ultra-wideband filter with notches. Background technique [0002] Ultra-wideband technology has appeared as early as 1940, derived from the inherent impulse response of microwave networks in time-domain electromagnetics to describe its instantaneous characteristics; in 1960, ultra-wideband technology was used in the field of radar technology; in 1972, ultra-wideband pulse detectors applied for U.S. patent; in 1978, the initial UWB communication system appeared; in 1984, the UWB communication system successfully conducted a 10-kilometer test; in 1990, the U.S. Department of Defense Advanced Planning Agency began to verify UWB technology. In February 2002, the U.S. Federal Communications Commission (FCC) released the "First Report and Order" on ultra-wideband technology, allowing commercial applications of ultra-wideband technology. This is an important mile...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P1/203
Inventor 褚庆昕朱贺
Owner 广州桑瑞科技有限公司
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