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Double-mode resonator based ultra-wide bandwidth dual-band-pass filter

A dual-mode resonator and dual-band pass technology, which is applied to waveguide-type devices, electrical components, circuits, etc., can solve problems such as being unfavorable to the miniaturization development of multi-frequency communication systems, the overall size of the filter, and the small passband bandwidth. , to 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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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 dual-band filter designed by the second method is easy to control, but it can only basically reach the frequency of each passband of the dual-band filter, and the bandwidth of the passband that can be realized is too small

Method used

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  • Double-mode resonator based ultra-wide bandwidth dual-band-pass filter
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  • Double-mode resonator based ultra-wide bandwidth dual-band-pass filter

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Embodiment Construction

[0019] The invention designs a controllable dual-frequency band-pass filter with compact bandwidth. The notch wave of the filter is adjustable and the pass band is adjustable, and the adjustments of the two do not interfere with each other.

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

[0021] An example of the present invention is figure 2 As shown, the dielectric substrate (104) is Arlon DiClad 880 with a dielectric constant of 2.2. The thickness of the dielectric substrate is 0.508mm, and the metal grounding plate (105) under the dielectric substrate is made of copper material.

[0022] Such as figure 1 As shown, in the bandwidth compact controllable dual-band bandpass filter of the present invention, the dual-mode resonator (101) loaded by the intermediate short-circuit stub, the two embedded half-wavelength resonators (102) and the input and output ports (103) adopt copper material.

[0023] Such as figure 2 As sho...

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Abstract

The invention discloses a double-mode resonator based ultra-wide bandwidth dual-band-pass filter. The filter comprises a double-mode resonator (101) loaded in a middle short-circuited stub, two half-wavelength resonators (102), input and output ports (103), a dielectric substrate (104) and a metal grounding plate (105) at the lower part of the dielectric substrate. According to the filter, two independent resonant modes are realized by utilizing the double-mode resonator loaded in the short-circuited stub; and the filter is simple in design, compact in structure, convenient to machine and low in cost, and can realize adjustable dual-band-pass performance.

Description

technical field [0001] The invention relates to an ultra-wideband dual-frequency bandpass filter based on a dual-mode resonator, which is a dual-mode resonator, and a low-pass frequency band for realizing source-load coupling. 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 of the indispensable key co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/203
Inventor 郑学梅段瀚林赵永生
Owner HARBIN HESON SCI & TECH
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