Title :
Design of low power with low phase noise of VCO by CMOS process
Author :
Hsu, Meng-Ting ; Chiang, Chung-Yu ; Chih, Ting-Yueh
Author_Institution :
Graduate Sch. of Electron. Eng., National Yunlin Univ. of Sci. & Technol., Taiwan
Abstract :
This paper presents a low power and low phase noise LC tank VCO for a portable receiver front-end in a TSMC 0.18 μm 1P6M CMOS process. The complementary cross-coupled topology and memory reduction tail current source were used in this work. The phase noise of measured value is -112.75 dBc/Hz at offset frequency 600KHz from the 1.95GHz carrier. The VCO core circuit draws only 2.77mW from a 1.5V supply. The tuning range of the circuit is 341MHz (17.5%) and the FOM is 178.56dB. It meets the requirements for communication circuits of low power and low phase noise which have been achieved simultaneously.
Keywords :
CMOS integrated circuits; UHF circuits; UHF oscillators; circuit noise; circuit tuning; constant current sources; low-power electronics; phase noise; voltage-controlled oscillators; 0.18 micron; 1.5 V; 1.95 GHz; 2.77 mW; 341 MHz; 600 kHz; CMOS oscillator; CMOS process; LC tank VCO; VCO core circuit; circuit tuning range; communication circuits; cross-coupled topology; low phase noise; memory reduction tail current source; offset frequency; portable receiver front-end; voltage controlled oscillators; Active inductors; CMOS process; Circuit optimization; Circuit topology; Energy consumption; Phase noise; Radio frequency; Tuning; Varactors; Voltage-controlled oscillators; CMOS oscillator; VCO; low phase noise; low power;
Conference_Titel :
Microwave Conference Proceedings, 2005. APMC 2005. Asia-Pacific Conference Proceedings
Print_ISBN :
0-7803-9433-X
DOI :
10.1109/APMC.2005.1606408
