Title :
Fast and high-precision VCO frequency calibration technique for wide-band frequency synthesizer
Author :
Yangyang Zhou ; Peng Qin ; Dongpo Chen
Author_Institution :
Center for Analog/RF IC, Shanghai Jiao Tong Univ., Shanghai, China
Abstract :
A fast and high precision VCO frequency calibration technique suited for wide-band PLL frequency synthesizer is reported in this article. The proposed frequency calibration adopts a quadrature-phase detection method which achieves very fast calibration time without degrading its calibration precision. 6-bit capacitor bank is used for the wideband VCO and LO frequency of the proposed wideband PLL is 9.75-11.5GHz. The proposed frequency synthesizer is simulated in 65nm CMOS technology, which favors high frequency digital circuits design. Clock frequency of calibration circuit is 700MHz. Total calibration time of the proposed technique is 3.4us and the frequency resolution is 8.3MHz.
Keywords :
CMOS digital integrated circuits; calibration; frequency synthesizers; microwave oscillators; phase locked loops; voltage-controlled oscillators; CMOS technology; capacitor bank; frequency 700 MHz; frequency 8.3 MHz; frequency 9.75 GHz to 11.5 GHz; high frequency digital circuits design; high precision VCO frequency calibration technique; quadrature-phase detection method; size 65 nm; time 3.4 mus; very fast calibration time; wide-band PLL frequency synthesizer; wideband VCO; word length 6 bit; Abstracts; CMOS integrated circuits; Clocks; Ground penetrating radar; Market research; Multiaccess communication; Voltage-controlled oscillators;
Conference_Titel :
Solid-State and Integrated Circuit Technology (ICSICT), 2014 12th IEEE International Conference on
Conference_Location :
Guilin
Print_ISBN :
978-1-4799-3296-2
DOI :
10.1109/ICSICT.2014.7021303
