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Tunable high frequency input circuit for a television receiver that tunes both VHF and UHF channels and can be readily integrated
Tunable high frequency input circuit for a television receiver that tunes both VHF and UHF channels and can be readily integrated
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机译:用于电视接收机的可调高频输入电路,可同时调谐VHF和UHF频道,并且易于集成
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摘要
The IC television tuner has a tunable oscillator and a fixed oscillator, two mixer stages and a filter in between. This tuner operates at two intermediate frequencies the first of which lies in the GHz range. The two oscillators are coupled through hybrid rings.
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