Direct digital conversion tuner and method for using same

Details Direct digital conversion tuner and method for using same Direct digital conversion tuner and method for using same

2011-06-28

2011-06-28

Nguyen, Lee (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency modifying or conversion

C341S126000, C375S316000

Reexamination Certificate

active

07970373

ABSTRACT:
A direct sampling tuner includes a low noise amplifier and an optional dynamically configurable band pass filter coupled to the low noise amplifier. The optional filter is configured to pass a selected band of channels. The tuner further includes a relatively high accuracy, multi-bit analog-to-digital converter (“ADC”) coupled to the LNA or to the optional dynamically configurable band pass filter. The ADC operates at greater than about twice a frequency of a sampled signal. The ADC directly samples the spectrum of the selected channels at the Nyquist rate, thus avoiding image problems presented by conventional tuners.

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