Abstract
This paper presents a wideband variable gain amplifier (VGA) applied to 60GHz millimeter-wave receiver with an operating frequency from DC to 1.08GHz and variable gain range from 0dB to 60dB. The entire VGA consists of an 8dB fixed gain stage, a 0~48dB coarse gain control stage, a 0~12dB fine gain control stage and an output buffer stage. Both the coarse gain control stage and the fine gain control stage adopt open loop amplifier with local feedback. The feedback capacitors are added to compensate the bandwidth of the circuit. The VGA circuit is designed in TSMC 65nm CMOS process. The post simulation results show that: the operating current of the entire VGAwith testing buffer is 20mA. The 3dB bandwidth is larger than 1.4GHz. The OP1dB at 0dB gain is 0 dBm. The whole chip area is 1.5×0.6mm 2 .
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.