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Current-Reused QVCO Based on Source-Connection Coupling
Sung-Sun CHOI Han-Yeol YU Yong-Hoon KIM
IEICE TRANSACTIONS on Electronics
Publication Date: 2011/08/01
Online ISSN: 1745-1353
Print ISSN: 0916-8516
Type of Manuscript: BRIEF PAPER
Category: Microwaves, Millimeter-Waves
current-reused VCO, low phase noise, low power consumption, QVCO, source-connection coupling,
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This paper presents a current-reused quadrature voltage-controlled oscillator (QVCO) which adopts a source-connection coupling structure. The QVCO simultaneously achieves low phase noise and low power consumption by newly combining current-reused VCOs and coupling transistors. The measured QVCO obtains good FoM of -188.2 dBc at a frequency of 2.2 GHz with 3.96 mW power consumption.