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RF/Microwave??

Silicon tuners take on terrestrial TV

Posted: 16 Jun 2008 ?? ?Print Version ?Bookmark and Share

Keywords:silicon tuners? terrestrial? broadband?

Over the past few years, silicon tuners have been gaining momentum in the marketplace. Silicon tuners now dominate the satellite TV and handheld markets. They are very popular in STBs and are gaining traction in consumer TVs. This market acceptance has been accelerated by the benefits that silicon tuners provide over traditional CAN tuners. These include size, software programmability, flexibility, ease of manufacture, thermal characteristics, enhanced performance and cost.

The first commercial application of silicon tuners was in the satellite market. All satellite TV reception pass through an STB. The size constraints of the STB favored the use of silicon tuners due to their small form factor.

The satellite standard and broadcast environment was suited to the early use of silicon tuners. The frequency range of the satellite systems spans only one octave (950-2,150MHz), and the system is not plagued with having to deal with analog interferers (as in the case of terrestrial and cable systems). The modulation schemes for satellite systems (QPSK and 8-PSK) are also less technically stringent than many terrestrial TV and cable TV systems. The combination of these factors enabled satellite TV STB suppliers to take advantage of the silicon tuner's small size, low- power consumption and low-cost advantages.

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