Systems and methods for reducing power consumption in a receiver
First Claim
Patent Images
1. A receiving circuit comprising:
- an antenna to receive a radio frequency signal;
a switch circuit couple to the antenna;
a receiver coupled to said switch circuit, said switch circuit to direct the radio frequency signal to said receiver when said receiving circuit is in a first mode; and
, a detection circuit coupled to said switch circuit, said switch circuit to direct said radio frequency signal to said detection circuit when said receiving circuit is in a second mode, said second mode being characterized as a lower power consumption mode, and wherein said detection circuit causes said receiving circuit to enter the first mode when said radio frequency signal is a valid signal.
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Accused Products
Abstract
Disclosed are systems and methods for reducing power consumption in a receiver. In one embodiment, an RF receiver (or transceiver) is able to conserve power by reducing or eliminating the need to continuously search for incoming signals. In one embodiment, this is accomplished by a receiver operating in a first mode and a second mode, wherein the receiver does not have to continuous search for and/or receive a signal while in the first mode, but rather may switch to the second mode upon detecting a DC voltage change across one or more impedance elements, thereby indicating an incoming signal.
18 Citations
34 Claims
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1. A receiving circuit comprising:
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an antenna to receive a radio frequency signal;
a switch circuit couple to the antenna;
a receiver coupled to said switch circuit, said switch circuit to direct the radio frequency signal to said receiver when said receiving circuit is in a first mode; and
,a detection circuit coupled to said switch circuit, said switch circuit to direct said radio frequency signal to said detection circuit when said receiving circuit is in a second mode, said second mode being characterized as a lower power consumption mode, and wherein said detection circuit causes said receiving circuit to enter the first mode when said radio frequency signal is a valid signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 27, 28, 31, 32)
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13. A system for receiving a radio frequency signal comprising:
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a transmitter to transmit said radio frequency signal; and
,a receiving circuit comprising;
an antenna to receive said radio frequency signal;
a switch circuit couple to the antenna;
a receiver coupled to said switch circuit, said switch circuit to direct the radio frequency signal to said receiver when said receiving circuit is in a first mode; and
,a detection circuit coupled to said switch circuit, said switch circuit to direct said radio frequency signal to said detection circuit when said receiving circuit is in a second mode, said second mode being characterized as a lower power consumption mode, and wherein said detection circuit causes said receiving circuit to enter the first mode when said radio frequency signal is a valid signal. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A method of receiving a radio frequency signal comprising:
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determining if a receiving circuit is in one of a first mode and a second mode;
directing said radio frequency signal to a receiver when said receiving circuit is in the first mode;
directing said radio frequency signal to a detector when said receiving circuit is in the second mode, said second mode being characterized as a lower power consumption mode, and wherein said detector causes said receiving circuit to enter the first mode when said radio frequency signal is a valid signal. - View Dependent Claims (26, 29, 30, 33, 34)
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Specification