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A 29-GHz low phase noise differential voltage controlled oscillator using 2-µm GaAs HBT process

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3 Author(s)
Yen-Liang Yeh ; Dept. of Electr. Eng., Nat. Central Univ., Jhongli ; Hong-Yeh Chang ; Chau-Ching Chiong

A 29-GHz low phase noise differential voltage controlled oscillator (VCO) using 2-mum AlGaAs/GaAs HBT process is presented in this paper. A common-emitter (CE) topology with a capacitive feedback is utilized to the circuit design. This circuit demonstrates a measured phase noise of -112 dBc/Hz at 1-MHz offset frequency, a tuning range of 0.55 GHz and an output power of higher than 1 dBm.

Published in:

Microwave Conference, 2008. APMC 2008. Asia-Pacific

Date of Conference:

16-20 Dec. 2008