چکیده مقاله
This paper proposes a Dual Coupled CMOS LC Quadrature Oscillator DC QO which composed of two coupling networks Two LC oscillators coupled via both active source injection coupling and passive noiseless inductive and capacitive coupling in the proposed QO Therefore, coupling ratio increased and the main mismatches in LC tank would be more controllable In this way, strong coupling performance reduces the phase sensitivity versus mismatches The combination of two coupling techniques provides stronger coupling operation, however doesn’t effect on the phase noise performance Since applied active coupling in the tail of proposed QO inject current from each side own outputs, so in zero crossing points there is no injection Also, the applied passive coupling uses noiseless elements inductor and capacitor , therefore the phase noise performance isn’t degraded Simulation results show that phase noise is desirable with low power consumption while phase error has been controlled To evaluate the validity of proposed QO, a designed DC QO simulated using the practical 0 18 TSMC CMOS technology at 3 07 GHz fundamental frequency The DC QO consumes3 371 mW from a 1 8V power supply, phase noise is 129 9 dBc/Hz @1 MHz and 138 5 dBc/Hz @3 MHz offset frequencies with the quality factor Q=9 4 and is desirable The Figure of Merit FOM of 193 363 dBc/Hz achieved The obtained simulation results confirm the reliablity of the proposed DC QO
کلیدواژهها
نویسندگان
Marzieh Chaharboor
MS Degree Electrical and Electronics Engineering, Hadaf Institute of Higher Education, Sari, Iran
Hojat Ghonoodi
Electrical Engineering Department, University of Mazandaran, Babolsar, Iran
شیوه ارجاع
Chaharboor, Marzieh and Ghonoodi, Hojat,1395,A High phase Accuracy and Low-Phase Noise Dual-Coupled CMOS LC Quadrature Oscillator,3rd National Congress of Electrical and Computer Engineering of Iran,Tehran
ارائهشده در
مجموعه مقالات سومین کنفرانس سراسری نوآوری های اخیر در مهندسی برق و کامپیوتر19 شهریور 1395 · تهران