A 35-50 GHz IQ-Demodulator in 0.13-μm CMOS Technology

Author

Lin, Chin-Shen ; Chang, Hong-Yeh ; Wu, Pei-Si ; Lin, Kun-You ; Wang, Huei

Author_Institution

Nat. Taiwan Univ., Taipei

fYear

2007

fDate

3-8 June 2007

Firstpage

1397

Lastpage

1400

Abstract

A broadband millimeter-wave (MMW) IQ demodulator is presented in this paper using standard 1P8M 0.13-μm CMOS technology. This IQ demodulator consists of two Gilbert-cell mixers, one 90° broadside coupler, and one Wilkinson power divider. This IQ demodulator has a conversion loss better than 3 dB from 35 to 50 GHz. The magnitude imbalance and image-signal rejection ratio are smaller than 1 dB and greater than 25 dBc, respectively. The 16-QAM baseband signals with 1 MHz symbol rate are used to test the digital demodulation performance. The 16-QAM baseband signals can be demodulated with an EVM of 6.3%. The chip area of this IQ demodulator is 0.9 × 1 mm² including all testing pads.

Keywords

CMOS integrated circuits; demodulators; millimetre wave couplers; millimetre wave mixers; power dividers; quadrature amplitude modulation; 0.13-mum CMOS technology; 16-QAM baseband signals; EVM; Gilbert-cell mixer; Wilkinson power divider; broadband millimeter-wave IQ-demodulator; broadside coupler; frequency 1 MHz; frequency 35 GHz to 50 GHz; magnitude imbalance; quadrature amplitude modulation; size 0.13 mum; Baseband; CMOS technology; Circuits; Demodulation; Metal-insulator structures; Millimeter wave radar; Millimeter wave technology; Power dividers; RF signals; Radio frequency; CMOS; Gilbert cell; demodulator; microwave monolithic integrated circuit (MMIC); mixer;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium, 2007. IEEE/MTT-S International

Conference_Location

Honolulu, HI

ISSN

0149-645X

Print_ISBN

1-4244-0687-0

Electronic_ISBN

0149-645X

Type

conf

DOI

10.1109/MWSYM.2007.380492

Filename

4264097