Title :
A 7.9 GHz Low-Power PMOS Colpitts VCO Using the Gate Inductive Feedback
Author :
Hou, Jian-An ; Wang, Yeong-Her
Author_Institution :
Dept. of Electr. Eng., Nat. ChengKung Univ., Tainan, Taiwan
fDate :
4/1/2010 12:00:00 AM
Abstract :
A low-power PMOS Colpitts voltage controlled oscillator (VCO) topology using the technique of gate inductive feedback is demonstrated. The topology enhances the negative conductance and overcomes the start-up difficulty of the conventional Colpitts VCO. This enables the Colpitts VCO to be operated in low-power consumption. The fabricated VCO operates from 7.4 to 7.9 GHz with 7% tuning range, a power consumption of 4.9 mW, and a supply voltage of 1.5 V. The measured phase noise at 1 MHz offset is 108.3 dBc/Hz at 7.9 GHz.
Keywords :
MOS integrated circuits; integrated circuit noise; low-power electronics; phase noise; voltage-controlled oscillators; frequency 7.9 GHz to 7.4 GHz; gate inductive feedback; low-power PMOS Colpitts VCO; low-power consumption; negative conductance; phase noise; supply voltage; voltage 1.5 V; voltage controlled oscillator topology; Colpitts voltage controlled oscillator (VCO); gate inductive feedback;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2010.2042559
