Tunable notch filter using feedback through an existing feedback receiver
AssigneeQUALCOMM Incorporated
InventorsPrasad Srinivasa Siva Gudem, Ojas M. Choksi, Wei Zhuo
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Abstract
A wireless communication device configured for reducing Tx leakage in a receive signal is described. The wireless communication device includes a transceiver chip. The transceiver chip includes a receiver, a feedback receiver and a transmitter. The wireless communication device also includes a Tx leakage signal reduction module. The Tx leakage signal reduction module reuses the feedback receiver.
Claims37
A wireless communication device configured for reducing Tx leakage in a receive signal, comprising:
- a transceiver chip, comprising:
- a receiver;
- a feedback receiver;
- and
- a transmitter;
- and
- a Tx leakage signal reduction module, wherein the Tx leakage signal reduction module reuses the feedback receiver.
A method for reducing Tx leakage in a receive signal, comprising:
- receiving the receive signal;
- processing the receive signal in a receiver;
- providing a feedback signal from the receiver to a feedback downconverter;
- converting the feedback signal to a digital leakage reduction signal using an analog-to-digital converter and a digital signal processor;
- and
- using the digital leakage reduction signal to reduce Tx leakage in the receive signal.
An apparatus for reducing Tx leakage in a receive signal, comprising:
- means for receiving the receive signal;
- means for processing the receive signal in a receiver;
- means for providing a feedback signal from the receiver to a feedback downconverter;
- means for converting the feedback signal to a digital leakage reduction signal;
- and
- means for using the digital leakage reduction signal to reduce Tx leakage in the receive signal.
A computer-program product for reducing Tx leakage in a receive signal, the computer-program product comprising a non-transitory computer-readable medium having instructions thereon, the instructions comprising:
- code for causing a wireless communication device to receive the receive signal;
- code for causing the wireless communication device to process the receive signal in a receiver;
- code for causing the wireless communication device to provide a feedback signal from the receiver to a feedback downconverter;
- code for causing the wireless communication device to convert the feedback signal to a digital leakage reduction signal using an analog-to-digital converter and a digital signal processor;
- and
- code for causing the wireless communication device to use the digital leakage reduction signal to reduce Tx leakage in the receive signal.
Dependencies are inferred from the claim text.