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Micro-strip ultra-wideband band pass filter with good band stop characteristic

An ultra-wideband filter and microstrip technology, applied in waveguide devices, electrical components, circuits, etc., to achieve good out-of-band suppression, good frequency selection, and low return loss

Inactive Publication Date: 2015-04-08
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, designing small, high-performance and low-cost filters remains a challenge

Method used

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  • Micro-strip ultra-wideband band pass filter with good band stop characteristic
  • Micro-strip ultra-wideband band pass filter with good band stop characteristic
  • Micro-strip ultra-wideband band pass filter with good band stop characteristic

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the embodiments of the present invention are not limited thereto. The front side of the embodiment is shown in Figure 3 (a), and includes the following patterns in the metal upper cladding layer 1 of the microstrip: 50 ohm input feeder 1, gradual impedance transmission line section 11, short-circuit transmission line section 12 (short circuit is formed by a metallized through hole 13), open transmission line section 14, transmission line section 15 and transmission line section 16, open transmission line section 31, open transmission line section 32, parallel coupled line section 33, open transmission line section 34, open transmission line section 35, transmission line section 25, transmission line section 26. Gradual impedance transmission line section 21, short-circuit transmission line section 22 (short circuit is realized by metallized th...

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Abstract

An ultra-wideband filter is a key device in an ultra-wideband communication system, and the performance of the filter determines the integral performance of the system. The invention relates to a micro-strip ultra-wideband band pass filter, which is based on a novel multi-mode resonator (an open-circuit transmission line section 31 and an open-circuit transmission line section 32 are connected to one end of a parallel-coupled line section 33, and meanwhile the other end of the parallel-coupled line section 33 is connected with an open-circuit transmission line section 34 and an open-circuit transmission line section 35). In addition, matching branch nodes (a short-circuit transmission line section 12 (short circuiting is realized through a metallized through hole 13) and an open-circuit transmission line section 14) are connected to an input port, and matching branch nodes (a short-circuit transmission line section 22 (short circuiting is realized through a metallized through hole 23) and an open-circuit transmission line section 24) are connected to an output port to further improve the performance of the ultra-wideband band pass filter. Research shows that the ultra-wideband band pass filter has the advantages of compact size, excellent performance and the like.

Description

technical field [0001] The invention belongs to the technical field of ultra-wideband communication, and in particular relates to a microstrip ultra-wideband bandpass filter. Background technique [0002] In 2002, the Federal Communications Commission (FCC) of the United States opened the frequency band between 3.1 GHz and 10.6 GHz for applications in the communication field. Because of its advantages such as high transmission rate and low transmission loss, UWB communication has received extensive attention and developed rapidly. As a key device in an ultra-wideband communication system, the performance of the ultra-wideband bandpass filter determines the overall performance of the system. However, designing small, high-performance, and low-cost filters remains a major challenge. Contents of the invention [0003] The object of the present invention is to provide a microstrip ultra-wide band band-pass filter in order to overcome the shortcomings of the existing ultra-wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/203
Inventor 肖飞张亭唐小宏
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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