Electronic device for direct or indirect wireless communication between devices

Patent metadata

Field	Value
Publication number	US-11742882-B2
Application number	US-202217583912-A
Country	US
Kind code	B2
Filing date	Jan 25, 2022
Priority date	Jul 31, 2019
Publication date	Aug 29, 2023
Grant date	Aug 29, 2023

Abstract

An electronic device is provided and includes an antenna; a first duplexer including a first band pass filter (BPF), a second BPF, a first port, a second port, and a third port; a filter; a power amplification circuit including an input port and an output port; a processor; a radio frequency (RF) integrated circuit (RFIC) including an input port and an output port; a first switch including a first terminal and a second terminal; a second switch including a first terminal and a second terminal; and a third switch including a first terminal, wherein the processor is configured to connect the antenna to the first terminal of the first switch, the output port of the power amplification circuit to the first terminal of the second switch, and a second port of the filter to the first terminal of the third switch by controlling the first switch, the second switch, and the third switch, and output a baseband signal to the RFIC in a state in which the antenna is connected to the first terminal of the first switch, the output port of the power amplification circuit is connected to the first terminal of the second switch, and the second port of the filter is connected to the first terminal of the third switch.

First claim

The invention claimed is:

1. An electronic device, comprising:
an antenna;
a first duplexer including a first band pass filter (BPF) configured to pass a radio frequency (RF) signal having a frequency band belonging to a first frequency band, a second BPF configured to pass an RF signal having a frequency band belonging to a second frequency band, a first port configured between the first BPF of the first duplexer and the second BPF of the first duplexer, a second port connected to the first BPF of the first duplexer, and a third port connected to the second BPF of the first duplexer;
a filter configured to pass an RF signal in a frequency band including a frequency band of an RF signal passing through at least one of the first BPF of the first duplexer or the second BPF of the first duplexer;
a power amplification circuit including an input port configured to receive an RF signal and an output port configured to output an amplified RF signal;
a processor;
an RF integrated circuit (RFIC) including an input port configured to convert a baseband signal received from the processor into an RF signal, convert an RF signal received through the antenna into a baseband signal, and receive an RF signal, and an output port configured to output an RF signal;
a first switch including a first terminal connected to a first port of the filter and a second terminal connected to the first port of the first duplexer and configured to connect the antenna to the first terminal of the first switch or the second terminal of the first switch;
a second switch including a first terminal and a second terminal connected to the second port of the first duplexer and configured to connect the output port of the power amplification circuit to the first terminal of the second switch or the second terminal of the second switch; and
a third switch including a first terminal connected to the first terminal of the second switch and a second terminal connected to the input port of the RFIC and configured to connect the second port of the filter to the first terminal of the third switch or the second terminal of the third switch,
wherein the processor is configured to connect the antenna to the first terminal of the first switch, the output port of the power amplification circuit to the first terminal of the second switch, and the second port of the filter to the first terminal of the third switch by controlling the first switch, the second switch, and the third switch, and output a baseband signal to the RFIC in a state in which the antenna is connected to the first terminal of the first switch, the output port of the power amplification circuit is connected to the first terminal of the second switch, and the second port of the filter is connected to the first terminal of the third switch.

2. The electronic device of claim 1 , wherein the filter includes an inductor and a capacitor having a characteristic of passing the RF signal in the first frequency band.

3. The electronic device of claim 2 , wherein the first frequency band is a long term evolution (LTE) frequency band designated to a frequency division duplexing (FDD) communication scheme.

4. The electronic device of claim 1 , further comprising a second duplexer,
wherein the second duplexer comprises:
a first BPF configured to pass an RF signal having a frequency band belonging to a third frequency band;
a second BPF configured to pass an RF signal having a frequency band belonging to a fourth frequency band;
a first port configured between the first BPF of the second duplexer and the second BPF of the second duplexer;
a second port connected to the first BPF of the second duplexer; and
a third port connected to the second BPF of the second duplexer,
wherein the first switch further includes a third terminal connected to the first port of the second duplexer and is configured to connect the antenna to the first terminal of the first switch, the second terminal of the first switch, or the third terminal of the first switch, and
wherein the second switch further includes a third terminal connected to the second port of the second duplexer and is configured to connect the output port of the power amplification circuit to the first terminal of the second switch, the second terminal of the second switch, or the third terminal of the second switch.

5. The electronic device of claim 4 , wherein the filter is configured to pass an RF signal in a frequency band including a frequency band of an RF signal passing through at least one of the first BPF of the second duplexer or the second BPF of the second duplexer.

6. The electronic device of claim 5 , wherein the filter includes an inductor and a capacitor having a characteristic of passing RF signals in the first frequency band and the third frequency band.

7. The electronic device of claim 6 , wherein one of the first frequency band and the third frequency band is an uplink band of B20 among long term evolution (LTE) frequency bands, and the other one is an uplink band of B28.

8. The electronic device of claim 1 , wherein the processor is further configured to connect the antenna to the second terminal of the first switch and the output port of the power amplification circuit to the second terminal of the second switch by controlling the first switch and the second switch when acquisition of network coverage from the baseband signal received from the RFIC is successful, and connect the antenna to the first terminal of the first switch, the output port of the power amplification circuit to the first terminal of the second switch, and the second port of the filter to the first terminal of the third switch by controlling the first switch, the second switch, and the third switch when the acquisition of the network coverage information from the baseband signal received from the RFIC has failed.

9. The electronic device of claim 1 , wherein the second switch and the power amplification circuit are configured as a single module.

10. An electronic device, comprising:
a first duplexer including a first band pass filter (BPF) configured to pass a radio frequency (RF) signal having a frequency band belonging to a first frequency band, a second BPF configured to pass an RF signal having a frequency band belonging to a second frequency band, a first port configured between the first BPF of the first duplexer and the second BPF of the first duplexer, a second port connected to the first BPF of the first duplexer, and a third port connected to the second BPF of the first duplexer;
a filter configured to pass an RF signal in a frequency band including a frequency band of an RF signal passing through at least one of the first BPF of the first duplexer or the second BPF of the first duplexer;
an antenna connected to a first port of the filter;
a power amplification circuit including an input port configured to receive an RF signal and an output port configured to output an amplified RF signal;
a processor;
an RF integrated circuit (RFIC) including an input port configured to convert a baseband signal received from the processor into an RF signal, convert an RF signal received through the antenna into a baseband signal, and receive an RF signal, and an output port configured to output an RF signal;
a first switch including a first terminal and a second terminal connected to the first port of the first duplexer and configured to connect a second port of the filter to the first terminal of the first switch or the second terminal of the first switch;
second switch comprising a first terminal and a second terminal connected to the second port of the first duplexer and configured to connect the output port of the power amplification circuit to the first termina

Assignees

• Samsung Electronics Co Ltd

Inventors

• Yoo Jonghun
• Yang Dongil
• Na Hyoseok
• Moon John

Classifications

• H04B1/0064 Primary

  with separate antennas for the more than one band (H04B1/0053 takes precedence) · CPC title

• H04B1/0067

  with one or more circuit blocks in common for different bands · CPC title

• H04B1/1615 Primary

  Switching on; Switching off, e.g. remotely (battery saving circuits associated with selective call operation H04W52/00; details of power consumption reduction in a PLL, H03L7/0802, H03L7/14, H03L2207/08, H03L2207/18; muting amplifiers by gain control see H03G3/34) · CPC title

• H04L5/14

  Two-way operation using the same type of signal, i.e. duplex · CPC title

• H04B1/40 Primary

  Circuits · CPC title