COMMUNICATIONS DEVICE WITH SIMULTANEOUS TRANSMIT AND RECEIVE AND RELATED METHODS
First Claim
Patent Images
1. A communications device comprising:
- a transmit path;
a receive path operable simultaneously with said transmit path and at a same frequency as said transmit path; and
processing circuitry configured togenerate a baseband signal for said transmit path,generate a feedforward signal based upon the baseband signal, anduse the feedforward signal to reduce self-interference in said receive path from said transmit path.
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Abstract
A communications device may include a transmit path, a receive path operable simultaneously with the transmit path and at a same frequency as the transmit path, and processing circuitry. The processing circuitry may be configured to generate a baseband signal for the transmit path, generate a feedforward signal based upon the baseband signal, and use the feedforward signal to reduce self-interference in the receive path from the transmit path.
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Citations
23 Claims
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1. A communications device comprising:
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a transmit path; a receive path operable simultaneously with said transmit path and at a same frequency as said transmit path; and processing circuitry configured to generate a baseband signal for said transmit path, generate a feedforward signal based upon the baseband signal, and use the feedforward signal to reduce self-interference in said receive path from said transmit path. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A communications device comprising:
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a transmit path; a receive path operable simultaneously with said transmit path and at a same frequency as said transmit path and configured to generate an error signal; at least one antenna coupled to said transmit and said receive paths; and processing circuitry configured to generate a baseband signal for said transmit path, generate a feedforward signal as an inverted replica of the baseband signal and based upon the error signal, and use the feedforward signal to reduce self-interference in said receive path from said transmit path. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A method of operating a communications device comprising a transmit path, and a receive path operable simultaneously with the transmit path and at a same frequency as the transmit path, the method comprising:
operating processing circuitry coupled to the transmit and receive paths to generate a baseband signal for the transmit path, generate a feedforward signal based upon the baseband signal, and use the feedforward signal to reduce self-interference in the receive path from the transmit path. - View Dependent Claims (18, 19, 20, 21, 22, 23)
Specification