Title :
New system approach to TV tuner design
Author_Institution :
Thomson Consumer Electron. R&D Lab., Villingen, West Germany
fDate :
8/1/1990 12:00:00 AM
Abstract :
A new tuner design approach which leads to a two-band tuner, using only VHF varactor diodes and a discrete mixer/oscillator in each band is presented. This tuner provides performance equal to or better than that of today´s three- or four-band tuners, with much reduced component costs. This approach allows improved RF filter selectivity in the UHF and VHF bands, thus allowing a simple mixer design due to selectivity protection. A schematic diagram of the tuner is presented
Keywords :
mixers (circuits); radiofrequency filters; radiofrequency oscillators; television receivers; tuning; varactors; RF filter selectivity; TV tuner design; UHF; VHF varactor diodes; discrete mixer/oscillator; two-band tuner; Filters; Inductance; Oscillators; Preamplifiers; Radio frequency; Schottky diodes; TV; Tuners; Tuning; Voltage;
Journal_Title :
Consumer Electronics, IEEE Transactions on
