Browsing by Author "Tarng, Jenn-Hwen"

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A Low-power Low-voltage Current-reused Voltage-controlled Oscillator with Amplitude-balanced Technique
(2017-01-01)
Lin, Chun-Yi
;
Lin, Yu-Kei
;
Rao, Pei-Zong
;
Tarng, Jenn-Hwen
;
Chung, Shyh-Jong
A current-reused voltage-controlled oscillator (CRVCO) with amplitude-balanced technique is presented. A cascode cross-coupled pair is adopted, which is used to improve the difference between the differential output amplitudes of CRVCO at a 1.3V supply voltage. The measured amplitude imbalance ratio is less than 0.15%. The measured phase noise is -114 dBc/Hz at 1 MHz offset when oscillation frequency is at 7.8 GHz, resulting in an FOM of -187 dBc/Hz.