RFFE device, electronic device and method for operating the same

Patent metadata

Field	Value
Publication number	US-12438561-B2
Application number	US-202217941344-A
Country	US
Kind code	B2
Filing date	Sep 9, 2022
Priority date	Sep 8, 2021
Publication date	Oct 7, 2025
Grant date	Oct 7, 2025

Abstract

According to various embodiments, there may be provided a radio frequency front end (RFFE) device comprising: a plurality of ports each connectable to an antenna, a first circuit configured to process a first signal for a first operating frequency band included in a first frequency band group, a second circuit configured to process a second signal for a second operating frequency band included in a second frequency band group, a diplexer including a first end electrically connected with a first port of the plurality of ports, a second end, and a third end, a first switch connected to a first conductive line connecting the first circuit and a second port of the plurality of ports and electrically connecting or electrically separating the second end of the diplexer to/from the first circuit and the second port based on a state, and a second switch connected to a second conductive line connecting the second circuit and a third port of the plurality of ports and electrically connecting or electrically separating the third end of the diplexer to/from the second circuit and the third port based on a state.

First claim

What is claimed is:

1. A radio frequency front end (RFFE) device comprising:
a plurality of ports each connectable to an antenna;
a first circuit configured to process a first signal for a first operating frequency band included in a first frequency band group;
a second circuit configured to process a second signal for a second operating frequency band included in a second frequency band group;
a diplexer including a first end electrically connected with a first port of the plurality of ports, a second end, and a third end;
a first conductive line connecting the first circuit and a second port of the plurality of ports;
a second conductive line connecting the second circuit and a third port of the plurality of ports;
a first switch; connected between the first conductive line and the second end of the diplexer, the first switch being configured to electrically connect or electrically separate the second end of the diplexer to/from the first circuit and the second port based on a first state of the first switch; and
a second switch; connected between the second conductive line and the third end of the diplexer, the second switch being configured to electrically connect or electrically separate the third end of the diplexer to/from the second circuit and the third port based on a state of the second switch.

2. The RFFE device of claim 1 ,
wherein the first circuit includes at least one first power amplifier configured to process the first signal for the first operating frequency band included in the first frequency band group and/or at least one first noise amplifier, and a plurality of first filters, and
wherein the second circuit includes at least one second power amplifier configured to process the second signal for the second operating frequency band included in the second frequency band group and/or at least one second noise amplifier, and a plurality of second filters.

3. The RFFE device of claim 1 , wherein the RFFE device is configured to transfer a signal through the first conductive line and the second conductive line or the first switch and the second switch, based on the state of the first switch and the state of the second switch.

4. The RFFE device of claim 3 , wherein, based on the state of the first switch and the state of the second switch being a closed state, the second end of the diplexer is electrically connected to the first circuit and the second port, and the third end of the diplexer is electrically connected to the second circuit and the third port.

5. The RFFE device of claim 4 , wherein, while the state of the first switch and the state of the second switch are the closed state, the RFFE device is configured to, based on a third signal for the first operating frequency band being output from the first circuit, and a fourth signal for the second operating frequency band being output from the second circuit, transfer the third signal to the second end of the diplexer through the first switch, and transfer the fourth signal to the third end of the diplexer through the second switch.

6. The RFFE device of claim 5 , wherein a fifth signal for the first operating frequency band and the second operating frequency band is output from the first end of the diplexer, based on the third signal and the fourth signal, and the fifth signal is transferred to the first port.

7. The RFFE device of claim 4 , wherein, while the state of the first switch and the state of the second switch are the closed state, the RFFE device is configured to, based on a sixth signal for the first operating frequency band and the second operating frequency band being transferred to the third end of the diplexer through the first port, transfer a seventh signal for the first operating frequency band to the first circuit through the first switch from the first end of the diplexer, and to transfer an eighth signal for the second operating frequency band to the second circuit through the second switch from the second end of the diplexer.

8. The RFFE device of claim 3 , wherein, based on the state of the first switch and the state of the second switch being an opened state, the second end of the diplexer is electrically separated from the first circuit and the second port, and the third end of the diplexer is electrically separated from the second circuit and the third port.

9. The RFFE device of claim 8 , wherein, while the state of the first switch and the state of the second switch are the opened state, based on a third signal for the first operating frequency band being output from the first circuit, and/or a fourth signal for the second operating frequency band being output from the second circuit, the RFFE device is configured to transfer the third signal to the second port through the first conductive line and/or to transfer the fourth signal to the third port through the second conductive line.

10. The RFFE device of claim 8 , wherein, while the state of the first switch and the state of the second switch are the opened state, the RFFE device is configured to transfer a fifth signal for the first operating frequency band to the first circuit through the first conductive line from the second port, and transfer a sixth signal for the second operating frequency band to the second circuit from the third port.

11. An electronic device comprising:
a first antenna for transmitting and/or receiving a signal for a first operating frequency band and a second operating frequency band;
a radio frequency front end (RFFE) device including:
a plurality of ports including a first port connected to the first antenna, a second port, and a third port,
a first circuit configured to process a first signal for the first operating frequency band,
a second circuit configured to process a second signal for the second operating frequency band,
a diplexer including a first end electrically connected with the first port, a second end, and a third end,
a first conductive line connecting the first circuit and the second port of the plurality of ports;
a second conductive line connecting the second circuit and the third port of the plurality of ports;
a first switch, connected between the first conductive line and the second end of the diplexer, the first switch being configured to electrically connect or electrically separate the second end of the diplexer to/from the first circuit and the second port based on a state of the first switch, and a second switch, connected between the second conductive line and the third end of the diplexer, the second switch being configured to electrically connect or electrically separate the third end of the diplexer to/from the second circuit and the third port based on a state of the second switch,
a first matching circuit connected to the second port; and
a second matching circuit connected to the third port.

12. The electronic device of claim 11 ,
wherein the first matching circuit includes at least one of at least one capacitor or at least one inductor corresponding to a first time constant associated with an impedance of the first conductive line, and
wherein the second matching circuit includes at least one of at least one capacitor or at least one inductor corresponding to a second time constant associated with an impedance of the second conductive line.

13. The electronic device of claim 11 , further comprising a communication processor comprising communication processing circuitry,
wherein the communication processor is configured to control the state of the first switch and the state of the second switch to a closed state based on the electronic device being turned on.

14. The electronic device of claim 13 , wh

Assignees

• Samsung Electronics Co Ltd

Inventors

• Kim Seonjun
• Moon Yohan
• Yang Dongil
• Yoo Jonghun
• Na Hyoseok

Classifications

• H04B1/40

  Circuits · CPC title

• H04B1/0057 Primary

  using diplexing or multiplexing filters for selecting the desired band · CPC title