Switchable power level detector for multi-mode communication device
First Claim
1. A method for controlling transmit power level in a multi-mode communication device comprising:
- sending a switch control signal to a switch responsive to a mode selected from two or more possible modes of operation;
responsive to the switch control signal, connecting a sampler, corresponding to the selected mode, to a detector;
amplifying an outgoing signal to generate an amplified outgoing signal;
detecting the amplified outgoing signal to determine the power of the amplified outgoing signal;
generating a power level feedback signal;
processing the power level feedback signal to generate an amplifier control signal; and
sending the amplifier control signal to an amplifier to control a power level of the outgoing signal.
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Accused Products
Abstract
A method and apparatus for power detection in a multi-mode communication device configured for operation in different modes or frequency bands. A detector monitors the power level of an amplified outgoing signal. The detector may be configured with a switch and two or more samplers. Responsive to the mode of operation, the detector adopts an optimal configuration to generate a power level feedback signal, which is provided to a digital signal processor or controller. Comparison of the power level feedback signal to a target value may occur to generate an amplifier control signal. The amplifier control signal controls the gain, applied by an amplifier, to the outgoing signal. During operation, the system monitors for a change in the mode of operation and upon responsive to a change, generates a switch control signal to reconfigure the detector configuration to match the new mode of operation.
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Citations
29 Claims
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1. A method for controlling transmit power level in a multi-mode communication device comprising:
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sending a switch control signal to a switch responsive to a mode selected from two or more possible modes of operation; responsive to the switch control signal, connecting a sampler, corresponding to the selected mode, to a detector; amplifying an outgoing signal to generate an amplified outgoing signal; detecting the amplified outgoing signal to determine the power of the amplified outgoing signal; generating a power level feedback signal; processing the power level feedback signal to generate an amplifier control signal; and sending the amplifier control signal to an amplifier to control a power level of the outgoing signal. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for adjusting power level when switching between bands in a multiband wireless communication device comprising:
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monitoring for a change in mode of operation from a first mode to a second mode; responsive to detecting a change in mode of operation, generating and sending a switch control signal to a switch; responsive to the switch control signal, selectively changing a detector configuration from operation in a first detector mode to operation in a second detector mode wherein selectively changing a detector configuration comprises switching a sampler configured for operation in the second mode to be connected to the detector; detecting one or more aspects of an outgoing signal; and responsive to detecting one or more aspects of an outgoing signal, generating an amplifier control signal to thereby control the power level of the outgoing signal. - View Dependent Claims (8, 9, 10, 11)
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12. A system for controlling transmit power level in a multi-mode wireless communication device comprising;
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an amplifier configured to receive an outgoing signal and generate an amplified outgoing signal responsive to an amplifier control signal; a detector, configured to sample the amplified outgoing signal and generate a feedback signal corresponding to the power level of the amplified outgoing signal, wherein the detector is further configured with a switchable selector to configure operation of the detector to match a mode of operation wherein the switchable selector to comprises a multiband switch having three inputs and a single output; and a controller configured to process the feedback signal to generate the amplifier control signal. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A system for controlling transmit power level in a multi-mode wireless communication device;
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an amplifier configured to receive an outgoing signal and generate an amplified outgoing signal responsive to an amplifier control signal; a detector, configured to sample the amplified outgoing signal and generate a feedback signal corresponding to the power level of the amplified outgoing signal, wherein the detector is further configured with a switchable selector to configure operation of the detector to match a mode of operation; and a controller configured to process the feedback signal to generate the amplifier control signal, wherein the switchable selector comprises a switch configured to receive a switch control signal from the controller to selectively utilize a sampler matched to an active mode of operation of the multi-mode wireless communication device. - View Dependent Claims (20, 21, 22, 23, 24)
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25. A system for controlling transmit power level in a multi-mode wireless communication device;
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an amplifier configured to receive an outgoing signal and generate an amplified outgoing signal responsive to an amplifier control signal; a detector, configured to sample the amplified outgoing signal and generate a feedback signal corresponding to the power level of the amplified outgoing signal, wherein the detector is further configured with a switchable selector to configure operation of the detector to match a mode of operation, wherein the detector comprises two or more samplers, a switch, and a detector; and a controller configured to process the feedback signal to generate the amplifier control signal. - View Dependent Claims (26, 27, 28, 29)
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Specification