Tuner suitable for integration and method for tuning a radio...

Telecommunications – Receiver or analog modulated signal frequency converter – With particular receiver circuit

Reexamination Certificate

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Details

C455S150100, C455S183100, C455S189100, C455S190100, C455S076000, C375S339000, C348S725000, C348S726000

Reexamination Certificate

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07447493

ABSTRACT:
A tuner (200) includes a direct digital frequency synthesizer (206) and a mixer (220). The direct digital frequency synthesizer (206) has an output terminal for providing a digital local oscillator signal having a frequency chosen to mix a desired channel to baseband. The mixer (220) has a first input terminal for receiving a tuned radio frequency signal, a second input terminal coupled to the output terminal of the direct digital frequency synthesizer (206), and an output terminal for providing an in-phase baseband signal.

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