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Miniaturized ultra-wideband band-pass filter with reconfigurable notch band

A band-pass filter and ultra-broadband technology, which is applied to waveguide devices, resonators, electrical components, etc., can solve the problems of large size and pass-band insertion loss, fixed frequency range of notch band or narrow adjustable range, etc., to achieve The effect of low insertion loss, large tuning range and compact structure

Active Publication Date: 2020-01-24
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a miniaturized ultra-wideband bandpass filter with a reconfigurable notch band, which solves the problems in the prior art that the size and the insertion loss of the passband are relatively large, and the frequency band of the notch band Problems such as fixed or narrow adjustable range

Method used

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  • Miniaturized ultra-wideband band-pass filter with reconfigurable notch band
  • Miniaturized ultra-wideband band-pass filter with reconfigurable notch band
  • Miniaturized ultra-wideband band-pass filter with reconfigurable notch band

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Embodiment 1

[0021] A miniaturized ultra-wideband bandpass filter with a reconfigurable notch band, which includes a half-mode substrate integrated waveguide 3 with a convex microstrip line 1; a convex microstrip line 1 and a half-mode substrate integrated waveguide The transition section 2 from the microstrip line with hypotenuse structure between 3 to the half-mode substrate integrated waveguide; the half-mode substrate integrated waveguide 3 contains three half-wavelength slot resonators 4; the microstrip line to the half-mode substrate integrated waveguide The transition section 2 and the half-mode substrate-integrated waveguide 3 have a common linear edge; the relative positions of the half-mode substrate-integrated waveguide 3 are gap-coupled with three reconfigurable notch units 5 . The three half-wavelength slot resonators 4 can generate the high-frequency stop band of the ultra-wideband bandpass filter, and determine the highest passband frequency of the ultrawideband bandpass filt...

Embodiment 2

[0026] figure 1 It is a schematic diagram of the overall structure of a specific embodiment of the present invention, including a 50Ω microstrip line, a transition section from a microstrip line to a half-mode substrate integrated waveguide, a half-mode substrate integrated waveguide, three half-wavelength slot resonators and three reusable The notch wave unit adopts the Rogers RT / Duroid 5880 substrate with a thickness of 0.508mm and a relative effective dielectric constant of 2.2. The width of the 50Ω microstrip line is W 4 is 1.54mm, and the overall size of the circuit in the embodiment is 32.8mm×18mm. In this embodiment, the varactor diodes are MA46H201 model of MACOM Company. The three reconfigurable notch units are coupled to the transition section from the microstrip line to the half-mode substrate integrated waveguide and the half-mode substrate integrated waveguide, and the coupling distance d1 is 0.1 mm.

[0027] In this embodiment, the width of the half-mode substr...

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Abstract

The invention discloses a miniaturized ultra-wideband band-pass filter with a reconfigurable notch band. The miniaturized ultra-wideband band-pass filter comprises a 50-ohm micro-strip line, a micro-strip line-to-half-mode substrate integrated waveguide transition section, a half-mode substrate integrated waveguide, three half-wavelength slot resonators and three reconfigurable notch units. The lowest pass-band frequency of the ultra-wideband band-pass filter is determined by the width of the half-mode substrate integrated waveguide, and the highest pass-band frequency of the ultra-wideband band-pass filter is determined by the three half-wavelength slot resonators. The three reconfigurable notch units are coupled to the micro-strip line-to-half-mode substrate integrated waveguide transition section and the half-mode substrate integrated waveguide to generate a notch band with reconfigurable frequency and bandwidth. By changing the DC bias voltage, the capacitance value of a variable-capacitance diode can be adjusted, and the frequency and bandwidth response of the notch band can be adjusted.

Description

technical field [0001] The invention relates to microwave device technology, in particular to a miniaturized ultra-wideband bandpass filter with a reconfigurable notch band. Background technique [0002] The UWB bandpass filter is a key component of the UWB system, and plays an important role in the frequency selection characteristics and insertion loss of the UWB system. The frequency range of traditional UWB is 3.1GHz-10.6GHz. Due to the wide frequency range of UWB and the high development and utilization of spectrum resources, interference signals exist in UWB systems. In order to suppress the interference signal, it is necessary to introduce a notch band at the frequency of the interference signal. At present, the existing ultra-wideband bandpass filter mainly adopts multi-mode resonator technology and high-pass filter cascaded low-pass filter technology, and its size and insertion loss are relatively large. At the same time, the introduced notch band has the problem ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/203H01P7/08
CPCH01P1/203H01P1/20309H01P7/08
Inventor 杨涛李群刘斌张希琳龙羽
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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