Automatic filter control
First Claim
1. A method of controlling power consumption of a receiver comprising:
- filtering a received signal using a variable filter to generate a filtered signal at a filter output; and
controlling a power consumption of the receiver by controlling one or more properties of the variable filter to maintain a current ratio at the filter output between one or more blocking signal power levels and a desired signal power level such that the current ratio satisfies a predetermined criteria relative to a desired ratio level.
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Abstract
A method and apparatus for controlling the power consumption of a receiver based on current operating conditions is described herein. A receiver according to the present invention applies a received signal to a variable filter. The received signal includes a desired in-band signal. Depending on the current operating conditions, the received signal may further include one or more unwanted out-of-band blocking signals. A filter controller controls one or more operating parameters of the variable filter to maintain the power ratio at the filter output of the power of the blocking signal(s) to the in-band signal at or below a desired level. In so doing, the present invention controls the receiver power consumption while still providing the desired receiver performance.
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Citations
24 Claims
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1. A method of controlling power consumption of a receiver comprising:
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filtering a received signal using a variable filter to generate a filtered signal at a filter output; and controlling a power consumption of the receiver by controlling one or more properties of the variable filter to maintain a current ratio at the filter output between one or more blocking signal power levels and a desired signal power level such that the current ratio satisfies a predetermined criteria relative to a desired ratio level. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A filter system configured to control power consumption of a receiver, said filter system comprising:
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a variable filter configured to filter a received signal to generate a filtered signal at a filter output; and a controller configured to control a power consumption of the receiver by controlling one or more properties of the variable filter to maintain a current ratio between one or more blocking signal power levels at the filter output and a desired signal power level at the filter output such that the current ratio satisfies a predetermined criteria relative to a desired ratio level. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification