Method for operating switch and electronic device supporting the same

• US 10,728,012 B2
• Filed: 11/18/2016
• Issued: 07/28/2020
• Est. Priority Date: 12/09/2015
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Yang, Dongil
• Primary Examiner(s): Jangbahadur, Lakeram
• Application Number:
  US15/355,180
• Publication Number:
  US 20170170947A1
• Time in Patent Office: 1,348 Days
• CPC Class Codes: H04B 1/401 for selecting or indicating operating mode
• CPC Class Codes: H04B 1/44 Transmit/receive switching
• CPC Class Codes: H04B 1/48 in circuits for connecting transmitter and receiver to a common transmission path, e.g. by energy of transmitter H04B1/46 takes precedence
• CPC Class Codes: H04B 1/52 Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
• CPC Class Codes: H04L 5/1461 Suppression of signals in the return path, i.e. bidirectional control circuits

Abstract

An electronic device is provided. The electronic device includes a housing; a communication circuit in the housing and configured to generate a signal for a time division duplexer (TDD) and a frequency division duplexer (FDD); an antenna electrically connected with the communication circuit; a plurality of electrical paths; and a control circuit, wherein each electrical path comprises a first transistor configured to connect with each electrical path in series, and a second transistor configured to connect with each electrical path and a ground, wherein the control circuit is configured to receive a wireless signal, select at least one of the TDD and the FDD to transmit the received wireless signal, and selectively activate a first transistor and a second transistor disposed in at least one electrical path and first and second transistors disposed in at least another electrical path among the plurality of electrical paths based on the selection.

Claims

1. An electronic device, comprising:

a housing;

a communication circuit disposed in the housing;

an antenna electrically connected with the communication circuit;

a plurality of electrical paths configured to connect the communication circuit and the antenna; and

a control circuit configured to connect with the communication circuit, the antenna, and the plurality of electrical paths,

wherein each electrical path included in the plurality of electrical paths comprises;

a series transistor configured to connect with each electrical path in series, and

a parallel transistor configured to connect with each electrical path in parallel and a ground,

wherein the control circuit is configured to;

receive a wireless signal,

select one of a time division duplexer (TDD) and a frequency division duplexer (FDD) based on the received wireless signal, and

selectively activate the series transistor and the parallel transistor disposed in each electrical path based on the selection, and

wherein, if the selection is made for the TDD, the control circuit is further configured to;

determine at least one electrical path corresponding to the TDD among the plurality of electrical paths,

activate a first set of transistors including the series transistor disposed in series with a first electrical path among the determined at least one electrical path corresponding to the TDD,

deactivate a second set of transistors including the parallel transistor disposed in parallel with the first electrical path among the determined at least one electrical path corresponding to the TDD,

deactivate the first set of transistors including each series transistor disposed in series with electrical paths excluding the first electrical path among the plurality of electrical paths,

deactivate the second set of transistors including each parallel transistor disposed in parallel with the electrical paths excluding the first electrical path among the plurality of electrical paths,

detect at least one signal from surroundings of the electronic device by using the communication circuit, and

select at least one of the TDD and the FDD based on the detected signal.

2. The electronic device of claim 1, wherein, if the selection is made for the FDD, the control circuit is further configured to:

activate the series transistor disposed in series with the first electrical path among the plurality of electrical paths,

activate the parallel transistors disposed in parallel with the electrical paths excluding the first electrical path among the plurality of electrical paths,

deactivate the parallel transistor disposed in parallel with the first electrical path, and

deactivate the series transistors disposed in series with the electrical paths excluding the first electrical path among the plurality of electrical paths.

3. The electronic device of claim 1, wherein the control circuit is disposed in an integrated circuit identical to the communication circuit.

4. The electronic device of claim 1, further comprising:

a logic circuit installed in the parallel transistor of each of the plurality of electrical paths.

5. The electronic device of claim 4, wherein the control circuit is further configured to deactivate the parallel transistor of each of the plurality of electrical paths by using the logic circuit.

6. The electronic device of claim 1, wherein a direct current (DC) blocking capacitor is installed in the parallel transistor of each of the plurality of electrical paths.

7. The electronic device of claim 6, wherein the control circuit is further configured to deactivate the parallel transistor of each of the plurality of electrical paths by using the DC blocking capacitor.

8. The electronic device of claim 1, further comprising:

a memory configured to store states of the series transistor and the parallel transistor connected to each of the plurality of electrical paths according to the TDD and the FDD in order to transmit a received wireless signal.

9. The electronic device of claim 1, wherein, if a decision is made for the TDD in a case of a hybrid division duplexer (HDD) using both the TDD and the FDD, the series transistor of the first electrical path corresponding to the TDD among the plurality of electrical paths is activated, and the parallel transistor of the first electrical path corresponding to the TDD and series and parallel transistors of the electronic paths excluding the first electrical path among the plurality of electrical paths are deactivated.

10. A method for operating a switch, the method comprising:

receiving a wireless signal;

selecting one of a time division duplexer (TDD) and a frequency division duplexer (FDD) based on the received wireless signal;

selectively activating a series transistor and a parallel transistor disposed in each electrical path of a plurality of electrical paths based on the selection;

detecting at least one signal from surroundings of the electronic device by using a communication circuit; and

selecting one of the TDD and the FDD based on the detected signal,

wherein if the selection is made for the TDD, determine at least one electrical path corresponding to the TDD among the plurality of electrical paths, activating a first set of transistors including the series transistor disposed in series with a first electrical path among the determined at least one electrical path corresponding to the TDD, deactivating a second set of transistors including the parallel transistor disposed in parallel with the first electrical path among the determined at least one electrical path corresponding to the TDD, deactivate the first set of transistors including each series transistor disposed in series with electrical paths excluding the first electrical path among the plurality of electrical paths, and deactivate the second set of transistors including each parallel transistor disposed in parallel with the electrical paths excluding the first electrical path among the plurality of electrical paths.

11. The method of claim 10, wherein selectively activating the series transistor and the parallel transistor disposed in each electrical path comprises:

if the selection is made for the FDD,

activating the series transistor disposed in series with the first electrical path among the plurality of electrical paths, activating the parallel transistors disposed in parallel with the electrical paths excluding the first electrical path among the plurality of electrical paths, deactivating the parallel transistor disposed in parallel with the first electrical path, and deactivating the series transistors disposed in series with the electrical paths excluding the first electrical path among the plurality of electrical paths.

12. The method of claim 10, wherein, if the selection is made for the TDD,

deactivating the parallel transistor disposed in each of the plurality of electrical paths by using logic circuits installed in the parallel transistor of each of the plurality of electrical paths.

13. The method of claim 10, wherein, if the selection is made for the TDD,

deactivating the parallel transistor disposed in each of the plurality of electrical paths by using direct current (DC) blocking capacitors installed in the parallel transistor of each of the plurality of electrical paths.

14. The method of claim 10, wherein, if the selection is made for the TDD in a case of a hybrid division duplexer (HDD) using both the TDD and the FDD, activating the series transistor of the first electrical path corresponding to the TDD among the plurality of electrical paths, and deactivating the parallel transistor of the first electrical path corresponding to the TDD and series and parallel transistors of the electronic paths excluding the first electrical path among the plurality of electrical paths.