# US 2026/0100680 A1 · Radio frequency front end module and electronic device including the same

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- Number: US 2026/0100680 A1
- Document ID: US20260100680A1
- Status: Published application
- Kind: A1
- Application number: 19/415,067
- Filed: 2025-12-10
- Published: 2026-04-09
- Earliest claimed: 2024-02-28
- Assignees: Samsung Electronics Co., Ltd.
- Applicants: Samsung Electronics Co., Ltd.
- Inventors: Hyunsang KANG; Hyoseok NA; Gyeonghun RYU; Yohan MOON; Juho VAN
- Web page: https://patentgrep.com/patent/US20260100680A1

## CPC

- H03F 1/26: Modifications of amplifiers to reduce influence of noise generated by amplifying elements
- H01G 4/12: Ceramic dielectrics {(H01G4/085 takes precedence)}
- H03F 1/0211: {with control of the supply voltage or current}
- H03F 1/0277: {Selecting one or more amplifiers from a plurality of amplifiers}
- H03F 3/195: in integrated circuits
- H03F 3/245: {with semiconductor devices only}
- H03F 3/72: Gated amplifiers, i.e. amplifiers which are rendered operative or inoperative by means of a control signal
- H04B 1/04: Circuits
- H04B 1/401: for selecting or indicating operating mode
- H04B 1/50: using different frequencies for the two directions of communication
- H04W 76/16: Involving different core network technologies, e.g. a packet-switched [PS] bearer in combination with a circuit-switched [CS] bearer
- H03F 2200/111: the amplifier being a dual or triple band amplifier, e.g. 900 and 1800 MHz, e.g. switched or not switched, simultaneously or not
- H03F 2200/451: the amplifier being a radio frequency amplifier
- H03F 2203/7209: the gated amplifier being switched from a first band to a second band
- H03F: AMPLIFIERS
- H01G: CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE (selection of specified materials as dielectric H01B3/00; capacitors having potential barriers H10D1/62, H10K10/10)
- H04B: TRANSMISSION
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

An electronic device is provided. The electronic device includes at least one processor including processing circuitry, a radio frequency (RF) transceiver, first power supply circuitry configured to provide a first supply voltage based on average power tracking (APT), second power supply circuitry configured to provide a second supply voltage based on APT, a switching circuit configured to selectively connect a power path to one of the first power supply circuitry and the second power supply circuitry, a first radio frequency front end (RFFE) module including a first power amplifier connected to the power path, a second RFFE module including a second power amplifier connected to the power path, a third RFFE module including a third power amplifier connected to the second power supply circuitry, a first capacitor connected to the first RFFE module, a second capacitor connected to the second RFFE module, and a third capacitor connected to the third RFFE module.

## Claims

### Claim 1

An electronic device comprising:
at least one processor comprising processing circuitry;
a radio frequency (RF) transceiver;
first power supply circuitry configured to provide a first supply voltage based on average power tracking (APT);
second power supply circuitry configured to provide a second supply voltage based on APT;
a switching circuit configured to selectively connect a power path to one of the first power supply circuitry and the second power supply circuitry;
a first radio frequency front end (RFFE) module including a first power amplifier connected to the power path;
a second RFFE module including a second power amplifier connected to the power path;
a third RFFE module including a third power amplifier connected to the second power supply circuitry;
a first capacitor connected to the first RFFE module;
a second capacitor connected to the second RFFE module; and
a third capacitor connected to the third RFFE module,
wherein the switching circuit is configured to, under control of the at least one processor and/or the RF transceiver individually or collectively:
connect the power path and the second power supply circuitry based on power amplifiers connected to the power path, including the first power amplifier and the second power amplifier, being disabled and the third power amplifier, connected to the second power supply circuitry, being enabled to transmit RF signals on a frequency band supported in the third RFFE module,
wherein the first capacitor, the second capacitor, and the third capacitor are used for the second supply voltage based on the APT based on the power path and the second power supply circuitry being connected, and
wherein transmit power for the frequency band supported in the third RFFE module is higher than transmit power for a frequency band supported in the first RFFE module and is higher than transmit power for a frequency band supported in the second RFFE module.

### Claim 2 (depends on 1)

The electronic device of claim 1,
wherein the switching circuit is configured to, under control of the at least one processor and/or the RF transceiver individually or collectively:
connect the power path and the second power supply circuitry based on one of the power amplifiers connected to the power path being enabled and at least another amplifier of the power amplifiers and the third power amplifier being disabled, and
operate in an isolation state or connect the power path to the first power supply circuitry based on the power amplifiers connected to the power path and the third power amplifier being disabled.

### Claim 3 (depends on 1)

The electronic device of claim 1,
wherein the second supply voltage based on the APT is configured to be provided to the third power amplifier through a path between the third RFFE module and the second power supply circuitry, and
wherein, based on the power path and the second power supply circuitry being connected, the first capacitor, the second capacitor, and the third capacitor are electrically connected to the path between the third RFFE module and the second power supply circuitry, to maintain the second supply voltage based on the APT.

### Claim 4 (depends on 1)

The electronic device of claim 1, wherein the switching circuit is included in the first RFFE module.

### Claim 5 (depends on 1)

The electronic device of claim 1,
wherein the first power supply circuitry and the second power supply circuitry are included in a power supply module,
wherein the power supply module is configured to, under control of the at least one processor and/or the RF transceiver individually or collectively:
connect a fourth capacitor to the second power supply circuitry based on the power amplifiers connected to the power path being disabled and the third power amplifier being enabled.

### Claim 6 (depends on 5)

The electronic device of claim 5,
wherein the power supply module includes a first APT switching circuit configured to connect first buck converter circuitry of the first power supply circuitry and the capacitor, and a second APT switching circuit configured to connect second buck converter circuitry of the second power supply circuitry and the capacitor, and
wherein, based on the power amplifiers connected to the power path being disabled and the third power amplifier connected to the second power supply circuitry being enabled, the first APT switching circuit is configured to be open and the second APT switching circuit is configured to connect the second buck converter circuitry of the second power supply circuitry and the capacitor.

### Claim 7 (depends on 1)

The electronic device of claim 1,
wherein, through the power path connected to the second power supply circuitry, the first capacitor, the second capacitor, and the third capacitor are coupled in parallel, with respect to an electric path between the second power supply circuitry and the third RFFE module.

### Claim 8 (depends on 1)

The electronic device of claim 1,
wherein the power path is configured to provide a supply voltage from the first power supply circuitry or the second power supply circuitry to one of the power amplifiers connected to the power path, and
wherein a portion of the power path is disposed external to the first RFFE module and connected to the second RFFE module through a voltage output port of the first RFFE module.

### Claim 9 (depends on 1)

The electronic device of claim 1, wherein a maximum output power for the third power amplifier is higher than a maximum output power for the first power amplifier and is higher than a maximum output power for the second power amplifier.

### Claim 10 (depends on 1)

The electronic device of claim 1,
wherein, based on the third power amplifier being enabled to transmit RF signals on the frequency band supported in the third RFFE module, the switching circuit is configured to connect the power path and the second power supply circuitry, and
wherein, based on the third power amplifier being enabled to transmit RF signals on another frequency band supported in the third RFFE module, the switching circuit is configured to connect the power path and the first power supply circuitry or operate in an isolation state.

### Claim 11 (depends on 10)

The electronic device of claim 10,
wherein the frequency band supported in the third RFFE module comprises a global system for mobile communications (GSM) band, and
wherein the another frequency band supported in the third RFFE module is usable for dual connectivity (DC) with a frequency band supported in the first RFFE module or a frequency band supported in the second RFFE module.

### Claim 12 (depends on 1)

The electronic device of claim 1, further comprising:
a fourth RFFE module including a fourth power amplifier connected to the first power supply circuitry;
a fifth RFFE module including a fifth power amplifier connected to the power path; and
a sixth RFFE module including a sixth power amplifier connected to the power path,
wherein the disabled power amplifiers include the fifth power amplifier and the sixth power amplifier,
wherein the third RFFE module is configured to process signals of a frequency band in a first frequency range,
wherein each of the first RFFE module and the second RFFE module is configured to process signals of a frequency band in a second frequency range higher than the first frequency range,
wherein the fourth RFFE module is configured to process signals of a frequency band between the first frequency range and the second frequency range, and
wherein each of the fifth RFFE module and the sixth RFFE module is configured to process signals of a frequency band for evolved universal mobile telecommunication system (UMTS) terrestrial radio access network (EUTRA) new radio (NR) dual connectivity (DC) (EN-DC).

### Claim 13 (depends on 1)

The electronic device of claim 1,
wherein the first capacitor is connected to a first node connecting the first RFFE module and the second power supply circuitry,
wherein the second capacitor is connected to a second node connecting the second RFFE module and the switching circuit, and
wherein the third capacitor is connected to a third node connecting the third RFFE module and the second power supply circuitry.

### Claim 14 (depends on 11)

The electronic device of claim 11, further comprising:
a multilayer ceramic capacitor (MLCC) connected to the second power supply circuitry.

### Claim 15

An electronic device comprising:
at least one processor comprising processing circuitry;
a radio frequency (RF) transceiver;
power supply circuitry configured to supply voltage based on average power tracking (APT);
a switching circuit;
a first radio frequency front end (RFFE) module including a first power amplifier;
a second RFFE module including a second power amplifier;
a third RFFE module including a third power amplifier;
a first path provided between the power supply circuitry and the switching circuit;
a second path provided between the switching circuit and each of power amplifiers including the first power amplifier and the second power amplifier;
a third path provided between a node on the first path and the third power amplifier,
a first capacitor connected to the first path;
a second capacitor connected to the second path; and
a third capacitor connected to the third path,
wherein, based on the first power amplifier being enabled, the second power amplifier being disabled, and the third power amplifier being disabled, the switching circuit is configured to connect the first power amplifier to receive supply voltage from the power supply circuitry through the first path and the second path to amplify first RF signals from the RF transceiver and transmit the amplified first RF signals on a first frequency band with first transmit power,
wherein, based on the first power amplifier being disabled, the second power amplifier being enabled, and the third power amplifier being disabled, the switching circuit is configured to connect the second power amplifier to receive supply voltage from the power supply circuitry through the first path and the second path to amplify second RF signals from the RF transceiver and transmit the amplified second RF signals on a second frequency band with second transmit power,
wherein, based on the first power amplifier being disabled, the second power amplifier being disabled, and the third power amplifier being enabled, the switching circuit is configured to connect the first path and the second path based on the third power amplifier being connected to receive supply voltage from the power supply circuitry through the third path to amplify third RF signals from the RF transceiver and transmit the amplified third RF signals on a third frequency band with third transmit power, and
wherein, based on the first path and the second path being connected through the switching circuit, the first capacitor, the second capacitor, and the third capacitor are coupled in parallel, and
wherein the third transmit power of the amplified third RF signals on the third frequency band is higher than the first transmit power of the amplified first RF signals on the first frequency band and is higher than the second transmit power of the amplified second RF signals on the second frequency band.

### Claim 16 (depends on 15)

The electronic device of claim 15,
wherein, based on the third power amplifier being enabled to transmit the third RF signals on the third frequency band supported in the third RFFE module, the switching circuitry is configured to connect the first path and the second path to utilize the first capacitor, the second capacitor, and the third capacitor that are coupled in parallel while providing the supply voltage based on the APT to the third power amplifier,
wherein, based on the third power amplifier being enabled to transmit fourth RF signals on the fourth frequency band, different from the third frequency band, supported in the third RFFE module, the switching circuitry is configured to operate in a state in which the first path and the second path are disconnected while providing the supply voltage based on the APT to the third power amplifier, and
wherein, based on the switching circuitry being configured to operate in the state in which the first path and the second path are disconnected, the first capacitor and the third capacitor among the first capacitor, the second capacitor, and the third capacitor are coupled in parallel.

### Claim 17 (depends on 16)

The electronic device of claim 16,
wherein the third frequency band supported in the third RFFE module comprises global system for mobile communications (GSM) band, and
wherein the fourth frequency band supported in the third RFFE module is usable for dual connectivity (DC) with the first frequency band supported in the first RFFE module or the second frequency band supported in the second RFFE module.

### Claim 18 (depends on 15)

The electronic device of claim 15,
wherein the first capacitor is connected to a first node of the first path, the first node connecting the first RFFE module and the node which connects the power supply circuitry, the switching circuitry, and the third RFFE module,
wherein the second capacitor is connected to a second node of the second path, the second node connecting the switching circuitry and the second RFFE module, and
wherein the third capacitor is connected to a third node of the third path, the third node connecting the third RFFE module and the node which connects the power supply circuitry, the switching circuitry, and the third RFFE module.

### Claim 19 (depends on 15)

The electronic device of claim 15, wherein the switching circuitry is included in the first RFFE module.

### Claim 20 (depends on 15)

The electronic device of claim 15, further comprising:
another power supply circuitry configured to supply voltage based on APT or envelope tracking (ET) included in a power supply module,
wherein the power supply circuitry is included in the power supply module, and
wherein the power supply module is configured to, in accordance with control of the processor or the RF transceiver:
connect a fourth capacitor to the first path based on the power amplifiers connected to the second path being disabled and the third power amplifier being enabled to transmit the third RF signals on the third frequency band supported in the third RFFE module.