A wide tuning range voltage controlled oscillator using common-base configuration and inductive feedback

Jhe Jia Kuo*, Zuo-Min Tsai , Ping Chen Huang, Chau Ching Chiong, Kun You Lin, Huei Wang

*此作品的通信作者

研究成果: Article同行評審

11 引文 斯高帕斯(Scopus)

摘要

Usually the tuning range of voltage controlled oscillator (VCO) is much narrower than the possible resonant frequency range of the tank at different tuning voltages. In this letter we analyze the traditional common-base type VCO, give a simple but useful insight about the mechanism behind the topology, and verified the conclusions with a 2 μm heterojunction bipolar transistor (HBT) VCO. The results show that with the CB configuration, proper feedback inductor and wide tuning range varactor, the tuning range can be almost the same as the resonant frequency range of the tank at different tuning voltages. A wideband voltage controlled oscillator using a commercial 2 μ HBT echnology is designed, fabricated and measured. The varactor with wide range of capacitance is used to achieve 53.33% measured tuning range from 9.46 to 16.34 GHz. The measured phase noise at 1 MHz offset is between -90 and -10 dBc/Hz. The total chip size is 1 mm 2 including all testing pads, while the core area is 0.64 mm 2 . The VCO is suitable for wideband application such as in measurement equipment or astronomical exploring telescopes.

原文English
文章編號5233898
頁(從 - 到)653-655
頁數3
期刊IEEE Microwave and Wireless Components Letters
19
發行號10
DOIs
出版狀態Published - 1 十月 2009

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