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Micro-strip ultra wideband band-pass filter having wave trapping characteristic

A technology with band-pass filter and notch characteristics, applied in the direction of waveguide type devices, electrical components, circuits, etc., to achieve the effect of excellent performance, compact size and great flexibility

Inactive Publication Date: 2014-12-10
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 having wave trapping characteristic
  • Micro-strip ultra wideband band-pass filter having wave trapping characteristic
  • Micro-strip ultra wideband band-pass filter having wave trapping characteristic

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Embodiment Construction

[0016] 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 embodiment of the present invention uses a CR-10 substrate with a relative permittivity of 9.6 and a substrate thickness of 0.635mm.

[0017] The front of the embodiment is shown in Figure 3(a), which includes an input feeder 1 with a characteristic impedance of 50 ohms, an output feeder 2 with a characteristic impedance of 50 ohms, a three-wire coupling structure 3, a metallized through hole 5, an open branch 6 and an open circuit. Branch 7. Among them, the input feeder 1 and the output feeder 2 are respectively connected to the parallel coupled three-wire structure 3 ; the parallel coupled three-wire structure 3 is connected to the open stub 6 and the open stub 7 through the metallized through hole 5 . The backside of the embodiment is shown in FIG. 3( b ), which include...

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Abstract

The invention relates to a micro-strip ultra wideband band-pass filter having wave trapping characteristic. The entire filter is manufactured on a micro-strip line, and the micro-strip line comprises three layers, namely, a metal overlying layer, a medium substrate and a metal underlying layer. The metal overlying layer is etched with metal patterns respectively, and comprises an input feeder line 1, an output feeder line 2, a parallel three-line coupled structure 3, a metallization through hole 5, an open-circuit branch 6 and an open-circuit branch 7, wherein the input feeder line 1 and the output feeder line 2 are connected with the parallel three-line coupled structure 3 respectively; the parallel three-line coupled structure 3 is connected with the open-circuit branch 6 and the open-circuit branch 7 through the metallization through hole 5. A rectangular defected ground structure 4 positioned below the parallel three-line coupled structure 3 is etched on the metal underlying layer, and is used for enhancing the coupling strength of the parallel three-line coupled structure 3. The bandwidth of the filter can cover an ultra-wideband frequency range, the wave-trapping frequency position can be adjusted independently, and very high flexibility is realized. Moreover, the 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 band-pass filter with notch characteristics. 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 filter determines the overall performance of the system. In the entire ultra-wideband frequency range, due to the existence of various other narrowband wireless communication signals, such as the global microwave Internet (WiMAX, 3.3GHz-3.6GHz), satellite C-band (3.7GHz-4.2GHz), or wireless local area network (WLAN , 5.15GH...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/203
Inventor 肖飞于英信唐小宏
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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