A 24-GHz active SPST MMIC switch with INGAP/GAAS HBTS
✍ Scribed by Jong-Ryul Yang; Dong-Wook Kim; Songcheol Hong
- Publisher
- John Wiley and Sons
- Year
- 2008
- Tongue
- English
- Weight
- 416 KB
- Volume
- 50
- Category
- Article
- ISSN
- 0895-2477
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✦ Synopsis
Abstract
A 24‐GHz single‐pole, single‐throw (SPST) switch with high isolation is designed using InGaP/GaAs HBT process. To obtain high isolation in an off state, cascode structures are utilized and an additional shunt transistor is introduced in an output, which helps to reject a leakage signal. Dummy cascode structure is used as a current steering circuit for input matching and short rise/fall time. The fabricated SPST switch shows an effective isolation of ∼52 dB at 22.8 GHz and 41 dB at 24 GHz. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 2155–2158, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23606