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US 2014/0370832 A1Published application
Efficient Dual Channel Conversion In A Multi-Band Radio Receiver
AssigneeSilicon Laboratories Inc.
InventorsMark May, Carlos Briseno-Vidrios, Junsong Li
Life of this patent
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Abstract
In an embodiment, an apparatus includes a first signal path to receive and process a radio frequency (RF) signal of a first band and which has a first programmable digitizer to convert the RF signal of the first band into a digitized signal without downconversion. In addition, the apparatus further includes a second signal path to receive and process an RF signal of a second band, where at least portions of one or more of the paths may be shared during operation in the different bands.
Claims20
An apparatus comprising:
- a first signal path to receive and process a radio frequency (RF) signal of a first band and including a first programmable digitizer to convert the RF signal of the first band into a first digitized signal without downconversion to a lower frequency signal and a second programmable digitizer to convert a second RF signal of the first band into a second digitized signal without downconversion to a lower frequency signal.
A radio receiver comprising:
- a first signal path to receive and process a radio frequency (RF) signal of an AM band and including:
- a first branch having a first digitizer controllable to digitize a first portion of the AM band of the RF signal including a desired signal channel;
- and
- a second branch having a second digitizer controllable to digitize another portion of the AM band of the RF signal while the first digitizer digitizes the first portion of the AM band;
- and
- a second signal path to receive and process a RF signal of an FM band and including a complex mixer to downconvert the RF signal of the FM band to a second frequency signal, wherein the second signal path is to provide the second frequency signal to the first and second digitizers to digitize the second frequency signal.
3 more elements
A method comprising:
- receiving a request for a desired signal channel in a first band in a controller of a radio receiver;
- and
- configuring a first analog-to-digital converter (ADC) of the radio receiver to operate at a first bandwidth to digitize the desired signal channel without downconversion to a lower frequency signal.
Dependencies are inferred from the claim text.