## Abstract In this article, a compact and low loss ring ultra‐wideband (UWB) bandpass filter (BPF) with an enlarged perturbation element is designed and implemented on FR4 substrate. This filter at center frequency f~0~ of 4.16 GHz has presented almost very good measured characteristics including
A ring filter switch for a low loss wideband and very sharp bandstop filter
✍ Scribed by Hee-Ran Ahn; Bumman Kim
- Publisher
- John Wiley and Sons
- Year
- 2007
- Tongue
- English
- Weight
- 237 KB
- Volume
- 49
- Category
- Article
- ISSN
- 0895-2477
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✦ Synopsis
Abstract
A ring‐filter switch is suggested for a low loss wideband filter with on‐state and very sharp bandstop filter with off‐state. It consists of a ring filter and a switching diode. The ring filter is a wideband filter but a band‐stop filter with a certain condition. The fact can be used as a switch. To verify it, a microstrip ring‐filter switch is fabricated and measured at a center frequency of 3 GHz. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2828–2830, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22828
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