A HBT-based quasi-circulator with wideband equalization technique
✍ Scribed by Steve W. Y. Mung; Wing Shing Chan; Kim Fung Man
- Publisher
- John Wiley and Sons
- Year
- 2011
- Tongue
- English
- Weight
- 376 KB
- Volume
- 53
- Category
- Article
- ISSN
- 0895-2477
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✦ Synopsis
Abstract
An innovative wideband equalization technique for use in a quasi‐circulator is presented. The technique utilizes both gain and phase equalization, which provides wideband frequency operation with good return loss and isolation between ports. The circulator is realized by configuring three heterojunction bipolar transistors together with an equalizing phase shifter. Both theoretical analyses and experimental validations are performed. Experimental results show that it can operate over the frequency range 0.8–2.2 GHz. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:766–768, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25820