US 11,082,007 B2 · Envelope tracking integrated circuit and related apparatus

Abstract

An envelope tracking (ET) integrated circuit (IC) (ETIC) is provided. The ETIC includes a number of ET circuits coupled to a number of amplifier circuits configured to amplify a radio frequency signal based on a number of ET voltages, respectively. The ET circuits are configured to generate the ET voltages based on a number of ET target voltages, respectively. The ETIC includes a reference ET circuit configured to generate a reference ET voltage based on a maximum ET target voltage among the ET target voltages. A selected ET circuit(s) among the ET circuits may be configured to not generate a respective ET voltage(s) but instead forward the reference ET voltage to a respective amplifier circuit(s) as the respective ET voltage(s). Hence, it may be possible to partially or completely turn off the selected ET circuit(s) to help reduce peak battery current and improve heat dissipation in an ET amplifier apparatus.

Claims20

Dependent claims

An envelope tracking (ET) integrated circuit (IC) (ETIC) comprising:

a plurality of amplifier ports coupled to a plurality of amplifier circuits configured to amplify a radio frequency (RF) signal based on a plurality of ET voltages, respectively;
a plurality of ET circuits coupled to the plurality of amplifier ports, respectively, and configured to:
generate the plurality of ET voltages based on a plurality of ET target voltages, respectively;
and
provide the plurality of ET voltages to the plurality of amplifier ports, respectively;
and
a reference ET circuit configured to:
generate a reference ET voltage based on a maximum ET target voltage among the plurality of ET target voltages;
and
provide the reference ET voltage to the plurality of ET circuits;
wherein at least one selected ET circuit among the plurality of ET circuits is configured to:
stop providing a respective ET voltage among the plurality of ET voltages to at least one selected amplifier port coupled to the at least one selected ET circuit;
and
provide the reference ET voltage to the at least one selected amplifier port coupled to the at least one selected ET circuit.

11 more elements

An envelope tracking (ET) amplifier apparatus comprising:

a plurality of amplifier circuits configured to amplify a radio frequency (RF) signal based on a plurality of ET voltages, respectively;
and
an ET integrated circuit (ETIC) comprising:
a plurality of amplifier ports coupled to the plurality of amplifier circuits, respectively;
a plurality of ET circuits coupled to the plurality of amplifier ports, respectively, and configured to:
generate the plurality of ET voltages based on a plurality of ET target voltages, respectively;
and
provide the plurality of ET voltages to the plurality of amplifier ports, respectively;
and
a reference ET circuit configured to:
generate a reference ET voltage based on a maximum ET target voltage among the plurality of ET target voltages;
and
provide the reference ET voltage to the plurality of ET circuits;
wherein at least one selected ET circuit among the plurality of ET circuits is configured to:
stop providing a respective ET voltage among the plurality of ET voltages to at least one selected amplifier port coupled to the at least one selected ET circuit;
and
provide the reference ET voltage to the at least one selected amplifier port coupled to the at least one selected ET circuit.

14 more elements

Dependencies are inferred from the claim text.

Envelope tracking integrated circuit and related apparatus

Life of this patent

Envelope tracking integrated circuit and related apparatus

Life of this patent

Abstract

Claims20