Title :
A Back-Gate Coupling Quadrature Voltage-Control Oscillator Embedded With Self Body-Bias Schema
Author :
Janne-Wha Wu ; Han-Hsin Wu ; Kai-Cheng Hsu ; Chang-Chun Chen
Author_Institution :
Dept. of Commun. Eng., Nat. Chung Cheng Univ., Chiayi, Taiwan
Abstract :
A quadrature voltage-controlled oscillator was designed with back-gate coupling and embedded self body-biasing and implemented with the TSMC 0.18 μm 1P6M CMOS technology. Without using any extra negative bias-pin in the current-reuse structure, this embedded body-bias schema makes the switching transistors become forward body-biased in the duration of turn-on. It is not only beneficial for low-voltage operation, but also achieves a high oscillating output power (-2.5 dBm) with less supply power (2.5 mW). The percentage of frequency tuning range is 17.5% (from 4.60 to 5.48 GHz). The phase noise is -114 dBc/Hz at 1-MHz offset from the carrier frequency of 5.48 GHz.
Keywords :
CMOS integrated circuits; coupled circuits; field effect MMIC; low-power electronics; microwave oscillators; phase noise; voltage-controlled oscillators; TSMC 1P6M CMOS technology; back-gate coupling; current-reuse structure; embedded self body-biasing; forward body-bias; frequency 4.60 GHz to 5.48 GHz; frequency tuning; high oscillating output power; less supply power; low-voltage operation; phase noise; quadrature voltage-control oscillator; size 0.18 mum; switching transistors; CMOS integrated circuits; Couplings; Phase noise; Power generation; Transistors; Voltage-controlled oscillators; Wireless communication; Back-gate coupling; CMOS; current-reuse; quadrature voltage-controlled oscillator (QVCO);
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2013.2242325
