## Abstract 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 f
Dual-mode square ring resonators for design of millimeter-wave ultra-wideband bandpass filter
✍ Scribed by Peng Cai; Zhewang Ma; Xuehui Guan; Yong Zhang; Bin Chen; Bo Xu
- Publisher
- John Wiley and Sons
- Year
- 2008
- Tongue
- English
- Weight
- 474 KB
- Volume
- 50
- Category
- Article
- ISSN
- 0895-2477
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✦ Synopsis
Abstract
In this article, a millimeter‐wave ultra‐wideband (UWB) bandpass filter is proposed and implemented by cascading two dual‐mode square ring resonators loaded with λ~0~/4 and 3λ~0~/4 open tuning stubs, aiming at transmitting the signals in the UWB passband of 22–29 GHz. Formulae based on even‐ and odd‐mode analysis are derived to facilitate the design of transmission zeros of these ring resonators. Because of the transmission zeros in the lower and upper stopbands, the proposed filter exhibits sharp attenuations near the passband as well as very wide stopband. The measured responses of the filter agree well with the design simulation, and satisfy well the Federal Communications Commission's indoor limit on millimeter‐wave UWB applications over very wide frequency band. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 879–883, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23237
📜 SIMILAR VOLUMES
## Abstract A novel wideband quasi‐millimeter‐wave filter with good in‐band and out‐band performances is proposed in this article. A dual‐mode square ring resonator loaded with two __5____λ__~__0__~/4 (__λ__~__0__~ is the center wavelength of the filter__)__ folded stubs is introduced to realize a
## Abstract A novel ultra‐wideband (UWB) bandpass filter (BPF) is proposed and implemented by using a four‐mode resonator, which has four resonant frequencies within the passband of the filter. By enhancing the coupling between the resonator and the input/output feed lines, an UWB BPF with six tran