Envelope tracking supply modulator topology for wide-bandwidth radio frequency transmitter
AssigneeMediatek Inc.
InventorsChen-Yen Ho, Chien-Wei Kuan, Sheng-Hong Yan, Hsin-Hung Chen
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Abstract
A package or a chip including a linear amplifier and a power amplifier is provided, wherein the linear amplifier is configured to receive an envelope tracking signal to generate an amplified envelope tracking signal, the power amplifier is supplied by an envelope tracking supply voltage comprising a DC supply voltage and the amplified envelope tracking signal, and the power amplifier is configured to receive an input signal to generate an output signal.
Claims13
A packaged multi-input multi-output beamforming transmitter, comprising:
- a first linear amplifier, for receiving a first envelope tracking signal to generate an amplified first envelope tracking signal;
- a second linear amplifier, for receiving a second envelope tracking signal to generate an amplified second envelope tracking signal;
- a first power amplifier, supplied by a first envelope tracking supply voltage comprising a combination of a first DC supply voltage and the amplified first envelope tracking signal, for receiving a first input signal to generate a first output signal for a first antenna;
- and
- a second power amplifier, supplied by a second envelope tracking supply voltage comprising a combination of a second DC supply voltage and the amplified second envelope tracking signal, for receiving a second input signal to generate a second output signal for a second antenna,
- wherein the first input signal and the second input signal are different inputs of the multi-input multi-output beamforming transmitter, and
- wherein the first DC supply voltage is different from the second DC supply voltage.
A packaged multi-input multi-output beamforming transmitter, comprising:
- a first linear amplifier, for receiving a first envelope tracking signal to generate an amplified first envelope tracking signal;
- a second linear amplifier, for receiving a second envelope tracking signal to generate an amplified second envelope tracking signal;
- a first power amplifier, supplied by a first envelope tracking supply voltage comprising a combination of a first DC supply voltage and the amplified first envelope tracking signal, for receiving a first input signal to generate a first output signal for a first antenna;
- and
- a second power amplifier, supplied by a second envelope tracking supply voltage comprising a combination of a second DC supply voltage and the amplified second envelope tracking signal, for receiving a second input signal to generate a second output signal for a second antenna,
- wherein the first input signal and the second input signal are different inputs of the multi-input multi-output (MIMO) beamforming transmitter, and
- wherein the first envelope tracking signal is different from the second envelope tracking signal.
Dependencies are inferred from the claim text.