Title :
A Mismatch Compensation Circuit for CMOS Quadrature VCO Phase Error
Author :
Lee, Han-Jian ; Chen, Che-Sheng ; Wuen, Wen-Shen ; Wen, Kuei-Ann
Author_Institution :
NCTU, HinChu
fDate :
July 30 2007-Aug. 2 2007
Abstract :
This paper presents an analysis of phase errors in LC quadrature VCO with a common-mode model. A mismatch compensation circuit is proposed to alleviate phase errors due to common-mode transconductance mismatch. With the compensation circuit, quardature phase errors and image rejection ration rate (IRR) are improved about 1.5 degrees and 4.7 dB, respectively. The compensation circuit consumes 1.1 mW.
Keywords :
CMOS integrated circuits; compensation; errors; semiconductor device models; voltage-controlled oscillators; CMOS quadrature VCO; common-mode transconductance mismatch; image rejection ration rate; mismatch compensation circuit; phase error; Circuits; Error analysis; Error correction; Frequency; Impedance; OFDM; Phase noise; Power harmonic filters; Transconductance; Voltage-controlled oscillators; Compensation; Quadrature phase error; Voltage controlled oscillators;
Conference_Titel :
Signals, Systems and Electronics, 2007. ISSSE '07. International Symposium on
Conference_Location :
Montreal, Que.
Print_ISBN :
1-4244-1448-2
Electronic_ISBN :
1-4244-1449-0
DOI :
10.1109/ISSSE.2007.4294522
