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Dual-notch band pass filter of loading single open circuit branch 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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  • 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 single open circuit branch on annular resonator
  • Dual-notch band pass filter of loading single open circuit branch on annular resonator
  • Dual-notch band pass filter of loading single open circuit branch on annular resonator

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Embodiment Construction

[0018] The present invention designs a double-notch band-pass filter in which a ring resonator is loaded with a single open-circuit branch, and the notch of the filter is adjustable and the pass-band is adjustable.

[0019] Below in conjunction with accompanying drawing this invention is described in more detail:

[0020] Such as figure 1 As shown, the ring resonator designed in the present invention is loaded with a double notch bandpass filter with a single open stub, 4 folded λ / 4 short stub resonators (101), a single open stub resonator (102), and a ring Copper material is used for the resonator (103), two input and output ports (104), and the half-wavelength microstrip line (105).

[0021] 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 copper material....

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Abstract

The present invention discloses a dual-notch band pass filter of loading a single open circuit branch on an annular resonator. The filter comprises four lambda / 4 short circuit branch resonators (101) of the folded structures, a single open circuit branch resonator (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 utilizing the short circuit branches and an E-shaped resonator, is simple in design, compact in structure and low in cost, and is convenient to process.

Description

technical field [0001] The present invention proposes a double-notch band-pass filter with a ring resonator loaded with a single open-circuit stub, which is an ultra-wideband filter with double-notch waves, in which 4 folded λ / 4 short-circuit stubs realize the ultra-wideband filter. Broadband characteristics, by loading a ring resonator and loading a single open-circuit stub resonator to realize a double-notch bandpass filter. 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, ultr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/203
CPCH01P1/203
Inventor 郑学梅孟祥余高爽
Owner HARBIN FEIYU TECH
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