Abstract
This paper presents a current-equalized distributed RF front-end for ultra-wideband (UWB) direct conversion receivers. The proposed distributed direct conversion RF front-end (DDC-RF) utilizes a current equalization technique to remove the systematic IQ phase and gain imbalances imposed by the intrinsic wideband characteristics of the distributed circuits. Fabricated in a 0.13 μm CMOS process, the proposed DDC-RF prototype achieves 12.1-13.4 dB gain and an average noise-figure (NF) of 6.8 dB across the UWB frequency band with 50Ω wideband-matched termination. A programmable RF termination allows the DDC-RF to achieve higher gain of 16.5 dB and lower NF of 4.3 dB, while trading off with few decibels of mismatch at the RF input port. The measured IQ gain and phase imbalances are less than ±0.5dB and ±2.5°, respectively. The 2-stage DDC-RF consumes 8mA from 1.8V supply voltage, and occupies an area of 1.2mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> .
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: 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.
