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Ultra wideband dual-frequency pass-band filter based on stepped impedance resonator

A stepped impedance, dual-band pass technology, applied in resonators, waveguide-type devices, electrical components, etc., can solve the problems that are not conducive to the miniaturization development of multi-frequency communication systems, the overall size of the filter is large, and the passband bandwidth is small. Achieve the effect of adjustable band-pass characteristics, compact structure and adjustable pass-band

Inactive Publication Date: 2016-07-20
HARBIN HESON SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The overall size of the filter designed by the first method is large and the cost is high, which is not conducive to the miniaturization development of the multi-frequency communication system
The multi-frequency filter designed by the second method is easy to control, but it can only basically reach the frequency of each passband of the multi-frequency filter, and the bandwidth of the passband that can be realized is too small

Method used

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  • Ultra wideband dual-frequency pass-band filter based on stepped impedance resonator
  • Ultra wideband dual-frequency pass-band filter based on stepped impedance resonator
  • Ultra wideband dual-frequency pass-band filter based on stepped impedance resonator

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Embodiment Construction

[0020] The invention designs an ultra-broadband dual-frequency band-pass filter based on a double-mode stepped impedance stub resonator. The frequency band characteristics of the filter and the pass band are adjustable, and the two adjustments do not interfere with each other.

[0021] Below in conjunction with accompanying drawing, invention is described in more detail:

[0022] An example of the present invention is figure 2 As shown, on a dielectric substrate (107) with a relative permittivity εR=2.65, TANδ=0.001 and h=1mm. The thickness of the conductor is 35 microns and the electrical loss is 6.14×107S / s, and the metal ground plate (108) under the dielectric substrate is made of copper material. The dual-frequency bandpass filter based on the double-branch line loaded ladder impedance resonator is characterized in that the first input and output terminals (101), the second input and output terminals (102) are respectively 50 ohms of the dual-frequency bandpass filter M...

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Abstract

The invention discloses an ultra wideband dual-frequency pass-band filter based on a stepped impedance resonator. The ultra wideband dual-frequency pass-band filter comprises a first input-output end (101), a second input-output end (102), a first open-loop stepped impedance resonator (103), a second open-loop stepped impedance resonator (104), a first loading double-branch line (105), a second loading double-branch line (106), a dielectric substrate (107) and a metal grounding plate (108) under the dielectric substrate. The filter has the advantages of simple design, compact structure and low cost, and is convenient to process, and adjustable dual-frequency pass-band performance can be achieved.

Description

technical field [0001] The invention relates to an ultra-wideband dual-frequency band-pass filter based on a ladder impedance resonator. The filter is a dual-band filter that realizes source-load coupling based on a dual-mode ladder impedance resonator. The two passbands of the dual-band filter have independent end-coupling and in-coupling structures respectively. On the basis of ensuring the small size of the filter, a dual-band bandpass filter with dual-passband frequency and bandwidth independently controllable is realized. 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 ...

Claims

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Application Information

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IPC IPC(8): H01P1/203H01P7/08
Inventor 郑学梅段瀚林赵永生
Owner HARBIN HESON SCI & TECH
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