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Dual-notch band pass filter of loading double open circuit branches on annular resonator

A ring resonator and band-pass filter technology, applied in circuits, waveguide-type devices, electrical components, etc., can solve the problems of large size and non-adjustable notch, and achieve simple design, adjustable band-pass characteristics, and convenient processing. Effect

Inactive Publication Date: 2017-06-20
HARBIN FEIYU TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In recent years, some design ideas have emerged, such as multi-mode resonators (MMR), via structures, etc. Although these structures can achieve the effect of notch waves, these structures are large in size and the notch waves cannot be adjusted.

Method used

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  • Dual-notch band pass filter of loading double open circuit branches on annular resonator
  • Dual-notch band pass filter of loading double open circuit branches on annular resonator
  • Dual-notch band pass filter of loading double open circuit branches on annular resonator

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Embodiment Construction

[0019] The invention designs a double-notch band-pass filter in which a ring resonator is loaded with double open-circuit branches, and the filter has adjustable notch waves and adjustable pass bands.

[0020] Below in conjunction with accompanying drawing this invention is described in more detail:

[0021] like figure 1 As shown, the ring resonator designed in the present invention is loaded with a double notch bandpass filter with double open-circuit stubs, λ / 4 short-circuit stub resonators (101) of 4 folded structures, double open-circuit stub resonators (102), ring Copper material is used for the resonator (103), two input and output ports (104), and the half-wavelength microstrip line (105).

[0022] An example of the present invention is figure 2 As shown, the dielectric substrate (106) is RT / Duorid5880 with a dielectric constant of 2.2, the thickness of the dielectric substrate is 1.0 mm, and the metal ground plate (107) under the dielectric substrate is made of cop...

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Abstract

The present invention discloses a dual-notch band pass filter of loading double open circuit branches on an annular resonator. The filter comprises four lambda / 4 short circuit branch resonators (101) of the folded structures, the double open circuit branch resonators (102), the annular resonator (103), two input / output ports (104), double open circuit branches (104), a half-wavelength microstrip line (105), a dielectric substrate (106) and a metal grounding plate (107) under the dielectric substrate. According to the present invention, the band pass filter having the dual-notch characteristics is realized by loading the double open circuit branches on the annular resonator, is simple in design, compact in structure and low in cost, and is convenient to process.

Description

technical field [0001] The invention proposes a double-notch band-pass filter loaded with double open-circuit stubs by a ring resonator, and the filter is an ultra-wideband filter with double notches. Four folded λ / 4 short-circuit stubs realize the ultra-wideband characteristics of the filter, and a double-notch bandpass filter is realized by loading ring resonators and double open-circuit stub resonators. Background technique [0002] In February 2002, the U.S. Federal Communications Commission (FCC) approved the 3.1-10.6GHz frequency band for commercial communications, so UWB is widely used. However, within the commercial range defined by FCC, UWB signals may be interfered by signals such as WiAX (3.5-GHz), WLAN (5.15-5.825GHz), RFID (6.8GHz), etc. How to solve co-channel interference has become an important content of ultra-wideband research. As one of the indispensable key components in multi-frequency communication systems, multi-band filters, ultra-wideband dual-band ...

Claims

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Application Information

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IPC IPC(8): H01P1/203
CPCH01P1/203H01P1/2039
Inventor 郑学梅王燕燕孟祥余
Owner HARBIN FEIYU TECH
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