A Wide-Tuning Dual-Band Transformer-Based Complementary VCO

Author

Yun, Seok-Ju ; Lee, Hui Dong ; Kim, Kwi-Dong ; Lee, Sang-Gug ; Kwon, Jong-Kee

Author_Institution

Electron. & Telecommun. Res. Inst., Daejeon, South Korea

Volume

20

Issue

6

fYear

2010

fDate

6/1/2010 12:00:00 AM

Firstpage

340

Lastpage

342

Abstract

A dual-band wide-tuning range complementary LC-VCO is reported that utilizes additive and subtractive coupling of transformer inductances. Complementary circuitry in the VCO enables the frequency tuning range to be extended with boosted positive loop gains. Implemented in 65 nm CMOS, the measured results show frequency tuning range of 56% and 33% at 7.5 and 18.25 GHz center frequency, respectively, and phase noise of -98 ~ -112 dBc/Hz (FoM_T of 187 ~ 202) at 1 MHz offset while dissipating 1.7 ~ 9.9 mW.

Keywords

CMOS integrated circuits; inductance; phase noise; transformers; voltage-controlled oscillators; .LC-VCO; CMOS process; boosted positive loop gains; center frequency; complementary circuitry; frequency 1 MHz; frequency 18.25 GHz; frequency 7.5 GHz; frequency tuning range; phase noise; size 65 nm; transformer inductances subtractive coupling; wide-tuning dual-band transformer-based complementary VCO; Dual-band; transformer-based resonator; voltage-controlled oscillator (VCO); wide-band;

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2010.2047524

Filename

5453070