Cart (Loading....) | Create Account
Close category search window
 

A Fully Integrated Variable-Gain Multi-tanh Low-Noise Amplifier for Tunable FM Radio Receiver Front-End

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

4 Author(s)
Jingyu Hu ; ST-NXP Wireless, Austin, TX ; May, M. ; Felder, M. ; Ragan, L.

In this paper, we present a two-stage variable-gain low-noise amplifier (LNA) used in a frequency modulation (FM) radio receiver front-end for a variety of portable audio devices. We also describe a tunable antenna interface and a voltage regulator used in the front-end. The front-end can be tuned to resonate at FM frequencies from 63 to 129 MHz. The two-stage LNA achieves a programmable small-signal voltage gain from 0.5 to 32.5 dB in around 1-dB steps across the FM band from 76 to 108 MHz. Its input-referred noise voltage is less than 1.5 nV/radicHz in the high gain mode. Furthermore, the linearity of the LNA and front-end is improved by employing the multi-tanh design principle. In the low and high gain modes of the LNA, the measured IIP3 are -5.2 and -16.5 dBm, respectively, compared with -10.5 and -25.5 dBm without using the multi-tanh doublets. The whole LNA is fabricated in a TSMC 0.18-mum CMOS technology. It draws maximum 4.5 mA current (5.5 mA including the regulator) from a 1.35-V supply and occupies 0.15 mm2 of chip area. Experimental and simulation results are both provided to demonstrate the performance of the LNA and front-end.

Published in:

Circuits and Systems I: Regular Papers, IEEE Transactions on  (Volume:55 ,  Issue: 7 )

Date of Publication:

Aug. 2008

Need Help?


IEEE Advancing Technology for Humanity About IEEE Xplore | Contact | Help | Terms of Use | Nondiscrimination Policy | Site Map | Privacy & Opting Out of Cookies

A not-for-profit organization, IEEE is the world's largest professional association for the advancement of technology.
© Copyright 2014 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.