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Using intrinsic zero to notch satellite signals in UWB filter

Published online by Cambridge University Press:  10 November 2016

Yang Xiong ,
Cheng Teng ,
Ming He ,
Kam-Weng Tam ,
Xian Yu ,
Wai-Wa Choi  and
Hai Hua Chen
Yang Xiong*
Affiliation:
College of Electronic Information and Optical Engineering, Nankai University, Tianjin 300350, China. Phone: +86 13312132051
Cheng Teng
Affiliation:
Faculty of Science and Technology, University of Macau, Taipa, Macao 999078, China
Ming He
Affiliation:
College of Electronic Information and Optical Engineering, Nankai University, Tianjin 300350, China. Phone: +86 13312132051
Kam-Weng Tam
Affiliation:
Faculty of Science and Technology, University of Macau, Taipa, Macao 999078, China
Xian Yu
Affiliation:
College of Electronic Information and Optical Engineering, Nankai University, Tianjin 300350, China. Phone: +86 13312132051
Wai-Wa Choi
Affiliation:
Faculty of Science and Technology, University of Macau, Taipa, Macao 999078, China
Hai Hua Chen
Affiliation:
College of Electronic Information and Optical Engineering, Nankai University, Tianjin 300350, China. Phone: +86 13312132051
*
Corresponding author: Y. Xiong Email: xiongyang@mail.nankai.edu.cn
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Abstract

In this paper, an ultra-wideband (UWB) filter with a notch band using T-shaped step impedance resonator loaded with cross-shaped open stubs has been presented. The notch band is formed by utilizing intrinsic zero. The characteristics of the new quad-mode resonator have been analyzed using odd-even mode analysis method. It can be shown that it is the intrinsic zero that generates the notch band. In addition, wide tunable notch band form 5–9.3 GHz can be achieved. A UWB filter with a notch band centered at 6.25 GHz using the proposed quad-mode resonator has been designed, fabricated, and tested. Experiment results show that the attenuation in notch frequency is >22 dB while the return loss of the simulation and measurement results are 22 dB/20 dB and 14.5 dB/11.2 dB in the lower and upper passband, respectively, which illustrate that the simulation and measurement results are in agreement.

Keywords

Intrinsic zeroNotch filterUltra-wideband (UWB) filter
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 9 , Issue 5 , June 2017 , pp. 1009 - 1015
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2016 

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