A 60 GHz CMOS VCO Using a Fourth-Order Resonator

Author

Yen-Chung Chiang ; Yu-Hsin Chang

Author_Institution

Dept. of Electr. Eng., Nat. Chung Hsing Univ., Taichung, Taiwan

Volume

25

Issue

9

fYear

2015

Firstpage

609

Lastpage

611

Abstract

In this letter, a 60 GHz voltage-controlled oscillator (VCO) implemented in the 90 nm CMOS process is presented. By using a fourth-order LC resonator, the proposed VCO oscillates at its second pole frequency to achieve high speed operation with fully differential output phases and a wide tuning range with a larger size of varactors. The measured oscillation frequencies of the proposed VCO are from 58.76 to 63.94 GHz corresponding to an 8.44% tuning range. The measured phase noise is -91.53 dBc/Hz at 1 MHz frequency offset for the highest output frequency. The core circuit consumes 7.2 mW power from a 1.2 V dc supply.

Keywords

CMOS integrated circuits; LC circuits; resonators; varactors; voltage-controlled oscillators; CMOS VCO; fourth-order LC resonator; frequency 1 MHz; frequency 58.76 GHz to 63.94 GHz; frequency 60 GHz; power 7.2 mW; size 90 nm; varactor size; voltage 1.2 V; voltage-controlled oscillator; CMOS integrated circuits; Frequency measurement; Phase noise; Resonant frequency; Tuning; Voltage-controlled oscillators; Wireless communication; CMOS process; LC resonator; phase noise; tuning range; voltage-controlled oscillator (VCO);

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2015.2451356

Filename

7173061