NDLI: 17-GHz pHEMT gilbert single-quadrature downconverter with polyphase filters for image rejection

Content Provider	IEEE Xplore Digital Library
Author	Hung-Ju Wei Chinchun Meng Jen-Yi Su Sheng-Wen Yu Guo-Wei Huang
Copyright Year	2010
Description	Author affiliation: Department of Electrical Engineering, National Chiao Tung University, 1001 Ta Hsueh Road, Hsinchu, 300 Taiwan, R.O.C (Hung-Ju Wei; Chinchun Meng; Jen-Yi Su; Sheng-Wen Yu) \|\| National Nano Device Laboratories, 30078 No. 26, Prosperity Road I, Science-based Industrial Park, Hsinchu, Taiwan R.O.C (Guo-Wei Huang)
Abstract	A 17-GHz Gilbert single-quadrature down-converter (SQDC) with polyphase filters is successfully demonstrated using 0.15-µm pseudomorphic high electron mobility transistor (pHEMT) technology for the first time to the best of our knowledge. Thanks to the semi-insulating GaAs substrate and an advanced technology, the image rejection Gilbert mixer works well at high frequencies. A polyphase filter at the LO stage is employed to generate precisely differential quadrature signals and a four-stage polyphase filter at the IF stage can filter out the unwanted image signal to achieve image rejection. From 10-MHz to 90-MHz IF frequencies, a 30-dB image rejection ratio is achieved when RF and LO frequencies are designed around 17 GHz. The Gilbert SQDC has a 5.5-dB conversion gain, 0-dBm IP, and 16-dBm IIP.
Starting Page	690
Ending Page	693
File Size	1006048
Page Count	4
File Format	PDF
ISBN	9781424475902
e-ISBN	9784902339215
e-ISBN	9781902339222
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-12-07
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	IEICE Institute of Electronics Informati
Subject Keyword	Mixers Radio frequency PHEMTs RF signals Gain Microwave filters CMOS integrated circuits
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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