Title :
A 3 chip GaAs double conversion TV tuner system with 70 dB image rejection
Author :
Ducourant, T. ; Philippe, P. ; Dautriche, Pierre ; Pauker, V. ; Villalon, C. ; Pertus, M. ; Damour, J.-P.
Author_Institution :
Philips Res. Organ., Limeil-Brevannes, France
Abstract :
A three-chip VHF-UHF TV tuner system has been implemented with a 0.7- mu m MESFET GaAs technology. The system, based on the double frequency conversion method, consists of an up-converter (IF/sub 1/=1.9 GHz), a smoothing filter, and an image rejection down-converter (IF/sub 2/=35 MHz). The system exhibits 30 dB of conversion gain and 70 dB of image-frequency rejection throughout the VHF-UHF band.<>
Keywords :
III-V semiconductors; colour television receivers; field effect integrated circuits; frequency convertors; tuning; 0.7 micron; 30 dB; GaAs; MESFET; double conversion TV tuner system; down-converter; frequency conversion; image rejection; smoothing filter; three-chip VHF-UHF TV tuner system; up-converter; Filters; Frequency conversion; Gallium arsenide; Image converters; MESFETs; Mixers; TV; Tiles; Tuners; Voltage-controlled oscillators;
Conference_Titel :
Microwave Symposium Digest, 1989., IEEE MTT-S International
Conference_Location :
Long Beach, CA, USA
DOI :
10.1109/MWSYM.1989.38678
