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US 8,139,161 B2Granted
Broadband integrated tuner
AssigneeCSR Technology Inc.
InventorsS. Vincent Birleson, Robert Rudolf Rotzoll, Albert H. Taddiken, Kenneth W. Clayton
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Abstract
A broadband integrated receiver for receiving input signals and outputting composite video and audio signals is disclosed. The receiver employs an up-conversion mixer and a down-conversion mixer in series to produce an intermediate signal. An intermediate filter between the mixers performs coarse channel selection. The down-conversion mixer may be an image rejection mixer to provide additional filtering.
Claims1
A receiver comprising:
- a first amplifier receiving RF signals, wherein said first amplifier is a low-noise amplifier;
- a first mixer having a first input coupled to said first amplifier and a second input coupled to a first reference signal having a first operating frequency, wherein said first mixer is in communication with a first filter;
- a second mixer having a first input coupled to an output of said first filter and a second input coupled to a second reference signal having a second operating frequency, wherein said second mixer is in communication with a second amplifier;
- a second filter having an input coupled to an output of said second amplifier;
- a third amplifier in communication with said second filter;
- and
- a coherent oscillator circuit in communication with an output of said second amplifier, wherein said coherent oscillator circuit is located on said single integrated circuit substrate.
4 more elements
Dependencies are inferred from the claim text.