MIMO Antenna Leakage Canceller System
First Claim
1. A system comprising:
- a first duplexer that receives samples of a signal transmitted from a first transmit portion of a communication device and outputs a filtered signal based on the sampled transmitted signal;
a first modulator that adjusts the filtered signal based on at least one of a phase, amplitude, and delay of leakage associated with the transmitted signal, wherein the leakage corresponds to leakage from the first transmit portion of the communication device to a first receive portion of the communication device, and that provides a leakage cancellation signal based on the adjusted filtered signal; and
a first coupler that subtracts the leakage cancellation signal from a signal received by the first receive portion of the communication device.
1 Assignment
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Accused Products
Abstract
A system includes a first duplexer that receives samples of a signal transmitted from a first transmit portion of a communication device and outputs a filtered signal based on sampled transmitted signal. A first modulator adjusts the filtered signal based on at least one of a phase, amplitude, and delay of leakage associated with the transmitted signal. The leakage corresponds to leakage from the first transmit portion of the communication device to a first receive portion of the communication device. The first modulator provides a leakage cancellation signal based on the adjusted filtered signal. A first coupler subtracts the leakage cancellation signal from a signal received by the first receive portion of the communication device.
12 Citations
20 Claims
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1. A system comprising:
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a first duplexer that receives samples of a signal transmitted from a first transmit portion of a communication device and outputs a filtered signal based on the sampled transmitted signal; a first modulator that adjusts the filtered signal based on at least one of a phase, amplitude, and delay of leakage associated with the transmitted signal, wherein the leakage corresponds to leakage from the first transmit portion of the communication device to a first receive portion of the communication device, and that provides a leakage cancellation signal based on the adjusted filtered signal; and a first coupler that subtracts the leakage cancellation signal from a signal received by the first receive portion of the communication device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method comprising:
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sampling a signal transmitted from a first transmit portion of a communication device; filtering the sampled transmitted signal; adjusting the filtered signal based on at least one of a phase, amplitude, and delay of leakage associated with the transmitted signal, wherein the leakage corresponds to leakage from the first transmit portion of the communication device to a first receive portion of the communication device; providing a leakage cancellation signal based on the adjusted filtered signal; and subtracting the leakage cancellation signal from a signal received by the first receive portion of the communication device. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification