In this letter, a novel dual-mode bandpass filter (BPF) using stepped impedance resonators (SIRs) for simultaneous low insertion-loss and wide passband has been designed. This novel wideband dual-mode BPF is formed by a microstrip square ring resonator with direct-connected orthogonal feed lines, and two impedance steps as perturbations. By varying the impedance ratio (K) of the SIRs, the wideband bandwidth can be tuned with more freedoms. The design procedure using the analysis of even and odd mode is described in this paper. The wideband BPF with relative bandwidth of 76.5% is simulated using the full wave electromagnetic simulation, and then fabricated and measured using the network analyzer. (C) 2008 Wiley Periodicals, Inc.
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E China Jiaotong Univ, Coll Informat Engn, Nanchang 330013, Peoples R ChinaE China Jiaotong Univ, Coll Informat Engn, Nanchang 330013, Peoples R China
Liu, Haiwen
Zhao, Yulong
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E China Jiaotong Univ, Coll Informat Engn, Nanchang 330013, Peoples R ChinaE China Jiaotong Univ, Coll Informat Engn, Nanchang 330013, Peoples R China
Zhao, Yulong
Shi, Liyun
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E China Jiaotong Univ, Coll Informat Engn, Nanchang 330013, Peoples R ChinaE China Jiaotong Univ, Coll Informat Engn, Nanchang 330013, Peoples R China
Shi, Liyun
Luo, Hui
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E China Jiaotong Univ, Coll Informat Engn, Nanchang 330013, Peoples R ChinaE China Jiaotong Univ, Coll Informat Engn, Nanchang 330013, Peoples R China
机构:
S China Univ Technol, Sch Elect & Informat Engn, Guangzhou 510640, Guangdong, Peoples R ChinaS China Univ Technol, Sch Elect & Informat Engn, Guangzhou 510640, Guangdong, Peoples R China
Dai, Xin
Zhang, Xiu Yin
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S China Univ Technol, Sch Elect & Informat Engn, Guangzhou 510640, Guangdong, Peoples R ChinaS China Univ Technol, Sch Elect & Informat Engn, Guangzhou 510640, Guangdong, Peoples R China
Zhang, Xiu Yin
Cai, Ze Yu
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S China Univ Technol, Sch Elect & Informat Engn, Guangzhou 510640, Guangdong, Peoples R ChinaS China Univ Technol, Sch Elect & Informat Engn, Guangzhou 510640, Guangdong, Peoples R China
Cai, Ze Yu
2013 CROSS STRAIT QUAD-REGIONAL RADIO SCIENCE AND WIRELESS TECHNOLOGY CONFERENCE (CSQRWC),
2013,
: 109
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112
机构:
S China Univ Technol, Sch Elect & Informat Engn, Guangzhou, Guangdong, Peoples R ChinaS China Univ Technol, Sch Elect & Informat Engn, Guangzhou, Guangdong, Peoples R China
Chen, Fu-Chang
Chu, Qing-Xin
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S China Univ Technol, Sch Elect & Informat Engn, Guangzhou, Guangdong, Peoples R ChinaS China Univ Technol, Sch Elect & Informat Engn, Guangzhou, Guangdong, Peoples R China