A Wideband Digital TV Receiver Front-End With Noise and Distortion Cancellation

• Published in: IEEE transactions on circuits and systems. I, Regular papers Vol. 61; no. 2; pp. 562 - 572
• Main Authors: Im, Donggu, Nam, Ilku
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.02.2014; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Cancellation; CMOS; Digital; distortion cancellation; front-end; Gain; micro mixer; Mixers; Noise; noise cancellation; Noise levels; Radio frequency; Receivers; Surface acoustic waves; Television; TV receiver; Wideband
• ISSN: 1549-8328; 1558-0806
• DOI: 10.1109/TCSI.2013.2278386

A low noise and highly linear wideband CMOS receiver front-end for digital TV receivers is proposed. The proposed RF front-end comprises a wideband noise canceling common gate low noise amplifier (LNA) with a capacitively cross-coupled current source, a highly linear up-conversion micromixer with third-order intermodulation distortion cancellation, and a highly linear surface acoustic wave (SAW) driver with enhanced loop gain. The RF front-end was fabricated using a 0.13 μm CMOS process and it draws 27 mA from a 1.5 V supply voltage. It achieves a voltage gain of 23 dB, a noise figure of less than 4 dB, an IIP3 of greater than -6.5 dBm, and an IIP2 of greater than 28 dBm across the entire input band from 54 MHz to 882 MHz.