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

• 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.

Ämnesord

TEKNIK OCH TEKNOLOGIER  -- Elektroteknik och elektronik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)

Publikations- och innehållstyp

ref (ämneskategori)

kon (ämneskategori)