A low power mixer with LC phase shifters for a single-end input

Author

Wang, Ruey-Lue ; Chien, Hung-Hsi ; Chuang, Chung-Chin ; Liu, Chien-Hsuan ; Su, Yan-Kuin

Author_Institution

Dept. of Electron. Eng., Nat. Kaohsiung Normal Univ., Kaohsiung, Taiwan

fYear

2010

fDate

7-10 Dec. 2010

Firstpage

574

Lastpage

577

Abstract

In this paper, a silicon downconversion mixer with a pairs of LC phase shifters using a TSMC 0.18um CMOS technology is demonstrated. In this circuit, the lower source-coupled pair in a traditional Gilbert cell mixer is displaced by two sets of LC phase shifters to enable low voltage and low power operation. The simulated results show the conversion gain (CG) of 7.9 dB, the input third-order intercept point (IIP3) of 2.5 dBm, the noise figure of 9.4 dB at the frequency of 1.9 GHz. The measured CG and IIP3 is 8.7 dB and 6 dBm at the frequency of 1.9 GHz. The measured NF is 15 dB. The simulated and measured power consumption is 1.97 mW and 2.72 mW respectively, under the supply voltage of 1.6 V.

Keywords

CMOS integrated circuits; UHF integrated circuits; UHF mixers; low-power electronics; phase shifters; LC phase shifter; Si; TSMC CMOS technology; downconversion mixer; frequency 1.9 GHz; gain 8.7 dB; low power mixer; low power operation; low voltage operation; noise figure 9.4 dB; power 1.97 mW; power 2.72 mW; single-end input; size 0.18 mum; voltage 1.6 V; Frequency measurement; Gain; Gain measurement; Impedance matching; Mixers; Phase shifters; Radio frequency; Gilbert cell; LC network; Mixer; low power; phase shifter;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference Proceedings (APMC), 2010 Asia-Pacific

Conference_Location

Yokohama

Print_ISBN

978-1-4244-7590-2

Electronic_ISBN

978-1-902339-22-2

Type

conf

Filename

5728688