Title :
Analysis and design LC cross coupled VCO regarding different phase noise approaches
Author :
Moghadami, S. ; JalaliBidgoli, Farzaneh ; Ahmadi, Amin
Author_Institution :
Electr. & Comput. Eng. Dept., K.N. Toosi Univ. of Technol., Tehran, Iran
Abstract :
This paper presents two fully integrated cross coupled low phase noise K and Ku bands LC Voltage Controlled Oscillators (VCO) using symmetric spiral inductors that have been designed and simulated using commercial 0.18μm CMOS technology. The simulated phase noises are around -136.2 dBc/Hz and -129.3 dBc/Hz (PMOS and NMOS respectively) at the offset frequency of 1MHz from the 16.1 GHz and 18.8 GHz center frequencies. The Power consumptions of both VCO circuits are about 10 mW. These designs are one of the best phase noises (by means of increasing tank quality factor) reported till now. Also, two phase noise approaches (Time and frequency domain) have been discussed.
Keywords :
CMOS analogue integrated circuits; LC circuits; MOS integrated circuits; Q-factor; frequency-domain analysis; integrated circuit design; phase noise; time-domain analysis; voltage-controlled oscillators; NMOS; PMOS; VCO circuits; commercial CMOS technology; frequency 16.1 GHz; frequency 18.8 GHz; frequency-domain phase noise approach; fully-integrated cross-coupled low-phase noise K band LC VCO; fully-integrated cross-coupled low-phase noise Ku band LC VCO; power consumption; size 0.18 mum; symmetric spiral inductors; tank quality factor; time-domain phase noise approach; Inductors; MOS devices; Phase noise; Topology; Transistors; Cross coupled; ISF; LC Oscillator; Phase noise; VCO;
Conference_Titel :
RF and Microwave Conference (RFM), 2013 IEEE International
Conference_Location :
Penang
Print_ISBN :
978-1-4799-2213-0
DOI :
10.1109/RFM.2013.6757266
