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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Xun Luo Sheng Sun Er-Ping Li |
| Copyright Year | 2012 |
| Description | Author affiliation: Huawei Technologies Co., Ltd., Shenzhen, China, 518129 (Xun Luo) || IHPC, A*star, Singapore, 138632 (Er-Ping Li) || The Univerisity of Hong Kong, China (Sheng Sun) |
| Abstract | This paper presents miniaturized microstrip bandpass filters based on the quarter-wavelength (λ/4) spiral-coupled scheme (SCS). By introducing the mutual electric and magnetic coupling between two SCS, two resonant modes can be well adjusted to form a passband and four transmission zeros can be generated to obtain a good out-of-band rejection. Without modifying the initial design parameters, another transmission zero with strong attenuation can be further introduced by loading a parallel-coupled line section along the symmetrical plane, thus largely widening the upper stopband. To verify our proposal, two filters are finally implemented and fabricated, which exhibit the following attractive features: low insertion loss, good passband selectivity, wide stopband with a high rejection level, and compact size. |
| Starting Page | 372 |
| Ending Page | 375 |
| File Size | 396576 |
| Page Count | 4 |
| File Format | |
| ISBN | 9781467322157 |
| e-ISBN | 9782874870279 |
| e-ISBN | 9782874870262 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2012-10-29 |
| Publisher Place | Netherlands |
| Access Restriction | Subscribed |
| Rights Holder | EUROPEAN MICROWAVE ASSOC |
| Subject Keyword | Couplings Filtering theory Magnetic resonance Band pass filters Microstrip Passband Microwave filters spiral-coupled scheme (SCS) Bandpass filter dual-mode mutual electric and magnetic coupling parallel-coupled line |
| Content Type | Text |
| Resource Type | Article |
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