Design of wideband mixer and VGA for Software Defined Radio in RFID application

Author

Lebo Wang ; Youde Hu ; Lirong Zheng ; Jue Shen ; Zhuo Zou

Author_Institution

State Key Lab. of ASIC & Syst., Fudan Univ., Shanghai, China

fYear

2014

fDate

27-28 Oct. 2014

Firstpage

1

Lastpage

4

Abstract

This paper presents Software Defined Radio (SDR) in RFID sensing applications focusing on wideband mixer and VGA design. The wideband receiver can support UHF, UWB band for commonly used long-range RFID standards ranging from 400MHz to 6GHz. The wideband mixer is of folded topology with switching biased technique, achieving a maximum 11.5dB conversion gain with only an 8dB DSB noise figure and 16dB flicker noise at 10kHz. The VGA utilizes a four-stage modified Cherry-Hopper amplifier, along with DC-offset cancelling and common-mode feedback. A maximum gain of 67dB can be achieved with more than 600MHz of bandwidth. The design is implemented in a 65nm CMOS process. The total power consumption of the mixer and the VGA is 7mW by simulation. The die area of these two blocks is 0.045mm².

Keywords

CMOS integrated circuits; UHF amplifiers; UHF mixers; microwave amplifiers; microwave mixers; radiofrequency identification; software radio; CMOS process; DC-offset cancelling; RFID sensing applications; SDR; UHF band; UWB band; VGA design; common-mode feedback; four-stage modified Cherry-Hopper amplifier; frequency 10 kHz; frequency 400 MHz to 6 GHz; gain 11.5 dB; gain 67 dB; long-range RFID standards; power 7 mW; size 65 nm; software defined radio; switching biased technique; wideband mixer; wideband receiver; Gain; Mixers; Radio frequency; Radiofrequency identification; Switches; Wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

NORCHIP, 2014

Conference_Location

Tampere

Type

conf

DOI

10.1109/NORCHIP.2014.7004731

Filename

7004731