Sliding intermediate-frequency receiver
AssigneeAtmosic Technologies, Inc.
InventorManolis Terrovitis
Life of this patent
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Abstract
This disclosure provides an apparatus for receiving and demodulating a radio frequency signal with a sliding intermediate frequency (IF) receiver. The sliding IF receiver may include a local oscillator (LO) and a clock divider, and a logic block. The clock divider may be configured to generate a first divided LO signal and a second divided LO signal based on an LO signal. The logic block may be configured to generate a first composite LO signal and a second composite LO signal. The first composite LO signal may be based on the first divided LO signal and the LO signal. The second composite LO signal may be based on the second divided LO signal and the LO signal. The first and the second composite LO signals may be used to demodulate a received RF signal and generate baseband signals.
Claims20
A sliding intermediate frequency (IF) receiver comprising:
- a clock divider configured to:
- receive a local oscillator (LO) signal;
- generate a first divided LO signal and a second divided LO signal based at least in part on the LO signal, wherein the first divided LO signal is offset with respect to the second divided LO signal;
- and
- a logic block configured to:
- generate a first composite LO signal based at least in part on the first divided LO signal and the LO signal;
- and
- generate a second composite LO signal based at least in part on the second divided LO signal and the LO signal.
A wireless device comprising:
- an antenna configured to receive a radio-frequency (RF) signal;
- and
- a sliding intermediate frequency (IF) receiver comprising:
- an oscillator configured to generate a local oscillator (LO) signal;
- a clock divider configured to generate a first divided LO signal and a second divided LO signal based on the LO signal;
- a logic block configured to:
- generate a first composite LO signal based at least in part on the first divided LO signal and the LO signal;
- and
- generate a second composite LO signal based at least in part on the second divided LO signal and the LO signal;
- a first mixer coupled to the antenna and configured to generate an in-phase baseband signal based on the first composite LO signal and the RF signal;
- and
- a second mixer coupled to the antenna and configured to generate a quadrature baseband signal based on the second composite LO signal and the RF signal.
A sliding intermediate frequency (IF) receiver comprising:
- means for receiving a local oscillator (LO) signal;
- means for generating a first divided LO signal and a second divided LO signal based at least in part on the LO signal, wherein the first divided LO signal is offset with respect to the second divided LO signal;
- means for generating a first composite LO signal based at least in part on the first divided LO signal and the LO signal;
- and
- means for generating a second composite LO signal based at least in part on the second divided LO signal and the LO signal.
Dependencies are inferred from the claim text.