Variable power adaptive transmitter
AssigneeMarvell World Trade Ltd.
InventorSehat Sutardja
Life of this patent
Estimating the term…
Abstract
A circuit comprises a delay module that receives a digital transmit signal and that generates a delayed transmit signal. A first digital to analog converter converts the delayed transmit signal to an analog transmit signal. An analog output circuit amplifies the analog transmit signal. An envelope generating module generates an envelope signal based on amplitude information in the digital transmit signal. A supply adjustment module supplies a voltage supply reference when the envelope signal is less than a threshold and boosts the bias voltage of the analog output circuit above the voltage supply reference when the envelope signal is greater than the threshold.
Claims36
A circuit comprising:
- a delay module that receives a digital transmit signal and that generates a delayed transmit signal;
- a first digital to analog converter that converts said delayed transmit signal to an analog transmit signal;
- an analog output circuit that receives said analog transmit signal;
- an envelope generating module that generates an envelope signal based on amplitude information related to said digital transmit signal;
- and
- a supply adjustment module that supplies a voltage supply reference when said envelope signal is less than a threshold and that boosts said bias voltage of said analog output circuit above said voltage supply reference when said envelope signal is greater than said threshold.
A circuit comprising:
- a delay module that receives a digital transmit signal and that generates a delayed transmit signal;
- a first digital to analog converter that converts said delayed transmit signal to an analog transmit signal;
- an analog output circuit that receives said analog transmit signal;
- a supply boost module that samples a signal including amplitude information of said digital transmit signal and that selectively boosts a voltage reference supplied to said analog output circuit before a corresponding portion of said analog transmit signal is received by said analog output circuit based on a difference between said sampled signal and a threshold.
A method comprising:
- receiving a digital transmit signal;
- generating a delayed transmit signal;
- converting said delayed transmit signal to an analog transmit signal;
- receiving said analog transmit signal at an analog output circuit;
- generating an envelope signal based on amplitude information related to said digital transmit signal;
- supplying a voltage supply reference when said envelope signal is less than a threshold;
- and
- boosting said bias voltage of said analog output circuit above said voltage supply reference when said envelope signal is greater than said threshold.
A method comprising:
- receiving a digital transmit signal;
- generating a delayed transmit signal;
- converting said delayed transmit signal to an analog transmit signal;
- receiving said analog transmit signal at an analog output circuit;
- sampling a signal that includes amplitude information of said transmit signal and selectively boosting a voltage reference supplied to said analog output circuit before a corresponding portion of said analog transmit signal is received by said analog output circuit based on a difference between said sampled signal and a threshold.
Dependencies are inferred from the claim text.