Power saving technique for digital to time converters
First Claim
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1. A wireless device comprising:
- a digital-to-time converter (DTC) configured to receive phase information from a baseband processor and to provide a first modulation signal for generating a wireless signal;
a detector configured to detect a change in transmission power of the wireless device, and to enable or disable at least a portion of the DTC in response to the change in transmission power;
wherein the DTC includes a first noise shaper located in a process path of the DTC; and
wherein the detector is configured to adjust a parameter of the first noise shaper in response to the change in the transmission power.
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Abstract
This document discusses apparatus and methods for reducing energy consumption of digital-to-time converter (DTC) based transmitters. In an example, a wireless device can include a digital-to-time converter (DTC) configured to receive phase information from a baseband processor and to provide a first modulation signal for generating a wireless signal, and a detector configured to detect an operating condition of the wireless device and to adjust a parameter of the DTC in response to a change in the operating condition.
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Citations
20 Claims
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1. A wireless device comprising:
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a digital-to-time converter (DTC) configured to receive phase information from a baseband processor and to provide a first modulation signal for generating a wireless signal; a detector configured to detect a change in transmission power of the wireless device, and to enable or disable at least a portion of the DTC in response to the change in transmission power; wherein the DTC includes a first noise shaper located in a process path of the DTC; and wherein the detector is configured to adjust a parameter of the first noise shaper in response to the change in the transmission power. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for operating a wireless transmitter comprising:
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receiving phase information from a baseband processor at a first digital-to-time converter (DTC); adjusting a parameter of the first DTC in one or more frequency bands of the phase information; detecting a change in transmission power of the wireless transmitter; enabling or disabling at least a portion of the first DTC in response to the change in transmission power; increasing an order of a first noise shaper in response to an increase in the transmission power; and wherein adjusting a parameter includes decreasing an order of the first noise shaper in response to a decrease in the transmission power. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A method for operating a wireless transmitter comprising:
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receiving phase information from a baseband processor at a first digital-to-time converter (DTC); adjusting a parameter of the first DTC in one or more frequency bands of the phase information; detecting a change in transmission power of the wireless transmitter; enabling or disabling at least a portion of the first DTC in response to the change in transmission power; detecting a change in presence of a coexistence band of an additional wireless protocol in a channel of the wireless device; increasing an order of a first noise shaper in response to detecting an increased presence of the coexistence band; and decreasing an order of the first noise shaper in response to detecting a decreased presence of the coexistence band.
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20. A method for operating a wireless transmitter comprising:
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receiving phase information from a baseband processor at a first digital-to-time converter (DTC); adjusting a parameter of the first DTC in one or more frequency bands of the phase information; detecting a change in transmission power of the wireless transmitter; enabling or disabling at least a portion of the first DTC in response to the change in transmission power; detecting a change in duplex distance of a channel of the wireless device; increasing an order of a first noise shaper in response to a decrease in the duplex distance; and decreasing an order of the first noise shaper in response to an increase in the duplex distance.
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Specification