CMOS 40 GHz divide-by-5 injection-locked frequency divider

Author

Tsai, P.-K. ; Huang, Tzuen-Hsi ; Pang, Y.-H.

Author_Institution

Dept. of Electr. Eng., Nat. Cheng Kung Univ., Tainan, Taiwan

Volume

46

Issue

14

fYear

2010

fDate

7/1/2010 12:00:00 AM

Firstpage

1003

Lastpage

1004

Abstract

A 40 GHz divide-by-5 injection-locked frequency divider fabricated in a CMOS 0.18 μm process is presented. By utilising a series-LC bandpass filter that is connected to the common-mode node of the differential injection pair to bypass the unwanted second harmonic and produce high impedance for the desired fourth-order harmonic, the fourth-order harmonic (4f₀) is peaked and mixed with input signals (at 5f₀) to achieve the output frequency f₀ (=5f₀ - 4f₀). With an injection power of -3 dBm, the measured maximum locking range is 735 MHz at a tuning voltage of 0.8 V. The total locking range covers 39.36-42.1 GHz as the tuning voltage rises from 0 to 1.8 V. This divider consumes 18 mW at 1 V supply voltage.

Keywords

CMOS integrated circuits; MIMIC; band-pass filters; frequency dividers; millimetre wave filters; CMOS process; common-mode node; divide-by-5 injection-locked frequency divider; fourth-order harmonic; frequency 39.36 GHz to 42.1 GHz; frequency 40 GHz; frequency 735 MHz; power 18 mW; series-LC bandpass filter; voltage 0 V to 1.8 V;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el.2010.1365

Filename

5507615