Method and system for using a multi-RF input receiver for diversity selection
First Claim
1. A method for processing signals in a receiver, the method comprising:
- receiving a plurality of signals via a plurality of phase-shifters coupled to corresponding receive antennas, each of the plurality of phase-shifters operating with an arbitrary phase setting;
making at least two measurements of signal strength corresponding to at least two signals generated from the plurality of received signals while turning off at least a portion of the plurality of receive antennas without the use of an antenna switch; and
selecting, based on the at least two measurements of the signal strength, at least one of the generated signals for processing without the use of an antenna switch.
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Accused Products
Abstract
A method for processing signals in a receiver includes receiving a plurality of wireless signals via a plurality of M receive antennas coupled to M corresponding signal amplifiers. The method may also include measuring corresponding signal strengths of M signals generated when each of M phase-shifters is coupled to each of the M receive antennas, while one or more of the M signal amplifiers are disabled. One of the M generated signals may be selected for processing without the use of an antenna switch, where the selecting may be based on the measured signal strength. Each of the plurality of received wireless signals may be amplified prior to the measuring. One or both of an in-phase (I) component and/or a quadrature (Q) component may be generated for each of the M generated signals.
23 Citations
20 Claims
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1. A method for processing signals in a receiver, the method comprising:
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receiving a plurality of signals via a plurality of phase-shifters coupled to corresponding receive antennas, each of the plurality of phase-shifters operating with an arbitrary phase setting; making at least two measurements of signal strength corresponding to at least two signals generated from the plurality of received signals while turning off at least a portion of the plurality of receive antennas without the use of an antenna switch; and selecting, based on the at least two measurements of the signal strength, at least one of the generated signals for processing without the use of an antenna switch. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system, comprising:
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a plurality of receive antennas communicatively coupled to corresponding phase-shifters; a measuring circuit configured to determine signal strengths for a plurality of combined signals, each of the plurality of combined signals generated by combining at least two signals received via the plurality of receive antennas while turning off a portion of the plurality of receive antennas without the use of an antenna switch; and a communications controller configured to select at least one of the combined signals for processing without the use of an antenna switch, the selection based upon the determined signal strengths. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A system for processing signals in a receiver, comprising:
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a plurality of phase-shifters, each phase-shifter configured to; obtain an input signal from a corresponding receive antenna; generate a first signal in phase with the input signal and a second signal 90 degrees out of phase with the input signal; adjust a gain of the first signal and a gain of the second signal; and combine the adjusted first and second signals to provide an output signal with a phase shift in the range of 0 to 360 degrees with respect to the input signal; and a combiner configured to combine at least a portion of the output signals to generate a combined output signal without the use of an antenna switch. - View Dependent Claims (19, 20)
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Specification