Enhanced locking range technique for divide-by-3 differential injection-locked frequency divider

Author

Sheng-Lyang Jang ; Chih-Yuan Lin ; Miin-Horng Juang

Author_Institution

Dept. of Electron. Eng., Nat. Taiwan Univ. of Sci. & Technol., Taipei, Taiwan

Volume

51

Issue

6

fYear

2015

fDate

3 19 2015

Firstpage

456

Lastpage

458

Abstract

A new circuit technique is proposed to enhance the locking range of divide-by-3 injection-locked frequency dividers (ILFDs) implemented using a standard 0.18 μm CMOS process. The ILFD uses a transformer feedback to increase the second harmonic and enhances the conversion efficiency of injection metal-oxide semiconductor field-effect transistor mixers. The ILFD core consumes 10.8 mW power at the supply voltage of 0.9 V and with a circuit core current of 12 mA. At the incident power of 0 dBm, the measured locking range is 4.2 GHz (37.17%), from the incident frequency 9.2-13.4 GHz.

Keywords

CMOS integrated circuits; circuit feedback; field effect MMIC; field effect transistors; frequency dividers; mixers (circuits); CMOS; ILFD core; conversion efficiency; current 12 mA; divide-by-3 differential injection-locked frequency divider; enhanced locking range technique; frequency 4.2 GHz to 13.4 GHz; injection metal-oxide semiconductor field-effect transistor mixers; power 10.8 mW; size 0.18 mum; transformer feedback; voltage 0.9 V;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el.2014.4009

Filename

7062150