Title :
A triple-band 900/1800/1900 MHz low-power image-reject front-end for GSM
Author :
Magoon, R. ; Koullias, I. ; Steigerwald, L. ; Domino, W. ; Vakilian, N. ; Ngompe, E. ; Damgaard, M. ; Lewis, K. ; Molnar, A.
Author_Institution :
Conexant Syst. Inc., Newport Beach, CA, USA
Abstract :
Conventional cellular handset receiver designs place receive-band filters, usually surface acoustic wave (SAW) filters, prior to and after the low-noise amplifier (LNA). In a triple-band receiver, this amounts to six SAW filters. The device presented here also eliminates the post-LNA SAW filters, but without the excess current required by image-reject mixers. It does so through the use of passive on-chip LC image filters. This makes possible higher dynamic range with low supply current, and low noise figure while providing a greater amount of image-rejection in comparison with image-reject mixer-based solutions.
Keywords :
cellular radio; low-power electronics; telephone sets; 1800 MHz; 1900 MHz; 900 MHz; GSM; cellular handset; dynamic range; image rejection; low-noise amplifier; low-power front-end; noise figure; passive on-chip LC image filter; triple-band receiver; Acoustic waves; Current supplies; Dynamic range; Low-noise amplifiers; Noise figure; Passive filters; SAW filters; Surface acoustic wave devices; Surface acoustic waves; Telephone sets;
Conference_Titel :
Solid-State Circuits Conference, 2001. Digest of Technical Papers. ISSCC. 2001 IEEE International
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-7803-6608-5
DOI :
10.1109/ISSCC.2001.912695
