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Challenges of silicon TV-tuner design

Posted: 21 Apr 2008     Print Version  Bookmark and Share

Keywords:television-tuner  television receiver systems  integrated circuits 

This article highlights some of the challenges faced in the design of integrated circuits for television receiver systems. These challenges are less common and can be more difficult to understand than those of some other communication receivers. They make television receivers (tuners & demodulators) among the toughest "radios" to build. In brief, the major design challenges are brought on by the wide TV input-signal bandwidth, the presence of potentially huge blocking signals, and the image and harmonic problems.

Traditionally, TV receivers have been designed using discrete transistors, accurately-tuned discrete inductors and capacitors, wide-band VCOs and high-voltage (15V and above) power supplies. These solutions don't translate very well into silicon.

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