標題: 4.9-GHz low-phase-noise transformer-based superharmonic-coupled GaInP/GaAs HBT QVCO
作者: Meng, CC
Chang, YW
Tseng, SC
資訊工程學系
Department of Computer Science
關鍵字: GaInP/GaAs heterojunction bipolar transistor (HBT);phase noise;quadrature voltage controlled oscillator (QVCO);superharmonic coupling;transformer
公開日期: 1-Jun-2006
摘要: The low-phase-noise GaInP/GaAs heterojunction bipolar transistor (HBT) quadrature voltage controlled-oscillator (QVCO) using transformer-based superharmonic coupling topology is demonstrated for the first time. The fully integrated QVCO at 4.87 GHz has phase noise of -131 dBc/Hz at 1-MHz offset frequency, output power of -4 dBm and the figure of merit (FOM) -198 dBc/Hz. The state-of-the-art phase noise FOM is attributed to the superior GaInP/GaAs HBT low-frequency device noise and the high quality transformer formed on the GaAs semi-insulating substrate.
URI: http://dx.doi.org/10.1109/LMWC.2006.875624
http://hdl.handle.net/11536/12208
ISSN: 1531-1309
DOI: 10.1109/LMWC.2006.875624
期刊: IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS
Volume: 16
Issue: 6
起始頁: 339
結束頁: 341
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