US 12,683,639 B2Granted

Antenna switch for time division duplexing and frequency division duplexing

AssigneeSkyworks Solutions, Inc.

InventorsJoshua Haeseok Cho, Stephane Richard Marie Wloczysiak, Thomas Obkircher, Junhyung Lee, Rimal Deep Singh, Bipul Agarwal

Life of this patent

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Abstract

Radio frequency front end modules implementing coexisting time division duplexing and frequency division duplexing are provided. In one aspect, a front end system includes a time-division duplexing transmit terminal, a time-division duplexing receive terminal, a frequency division duplexing terminal, and an antenna terminal. The front end system further includes first, second, and third switches configured to selectively connect the terminals to either a node or the antenna. The front end system also includes a controller configured to provide delays between disconnecting the terminals from the antenna and connecting the terminals to the node.

Claims20

Dependent claims

A wireless front end system comprising:

a first terminal coupled to a time-division duplexing transmit path, a second terminal coupled to a time-division duplexing receive path, a third terminal coupled to a frequency division duplexing path, and a fourth terminal coupled to an antenna;
a first switch configured to selectively connect the first terminal to either a first node or the fourth terminal based on a first control signal, a second switch configured to selectively connect the second terminal to either a second node or the fourth terminal based on a second control signal, and a third switch configured to connect the third terminal to the fourth terminal based on a third control signal;
and
a controller configured to generate the first control signal, the second control signal, and the third control signal, and to provide:
i) a first delay between switching connection of the first terminal from the fourth terminal to the first node, and ii) a second delay between switching connection of the second terminal from the fourth terminal to the second node.

2 more elements

A mobile device comprising:

an antenna configured to transmit and receive radio frequency signals with a base station;
a time-division duplexing transmit amplifier;
a time-division duplexing receive amplifier;
a frequency division duplexing terminal coupled to a frequency division duplexing path;
and
a front end system coupled to the antenna, the time-division duplexing transmit amplifier, the time-division duplexing receive amplifier, and the frequency division duplexing terminal, the front end system including a first switch configured to selectively connect the time-division duplexing transmit amplifier to either a first node or the antenna based on a first control signal, a second switch configured to selectively connect the time-division duplexing receive amplifier to either a second node or the antenna based on a second control signal, a third switch configured to connect the frequency division duplexing terminal to the antenna based on a third control signal, and a controller configured to generate the first control signal, the second control signal, and the third control signal, and to provide:
i) a first delay between switching connection of the time-division duplexing transmit amplifier from the antenna to the first node, and ii) a second delay between switching connection of the time-division duplexing receive amplifier from the antenna to the second node.

4 more elements

A mobile device comprising:

an antenna configured to transmit and receive radio frequency signals with a base station;
a time-division duplexing transmit amplifier;
a time-division duplexing receive amplifier;
a frequency division duplexing terminal coupled to a frequency division duplexing path;
and
a front end system coupled to the antenna, the time-division duplexing transmit amplifier, the time-division duplexing receive amplifier, and the frequency division duplexing terminal, the front end system including a first switch configured to selectively connect the time-division duplexing transmit amplifier to either a first node or the antenna based on a first control signal, a second switch configured to selectively connect the time-division duplexing receive amplifier to either a second node or the antenna based on a second control signal, and a third switch configured to connect the frequency division duplexing terminal to the antenna based on a third control signal, the first switch including a first serial sub-switch configured to selectively connect the time-division duplexing transmit amplifier to the antenna and a first shunt sub-switch configured to selectively connect the time-division duplexing transmit amplifier to the first node, and the second switch including a second serial sub-switch configured to selectively connect the time-division duplexing receive amplifier to the antenna and a second shunt sub-switch configured to selectively connect the time-division duplexing receive amplifier to the second node.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/453,205Filed 21 Aug 2023 · continuation
Priority: 4 Feb 2021
Published: US 2024/0048167 A18 Feb 2024
Granted: 14 Jul 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

H04B 1/1638
Circuits: special circuits to enhance selectivity of receivers not otherwise provided for
H04B 1/1615
Supply circuits: switching on; Switching off, e.g. remotely
H04B 1/18
Circuits: input circuits, e.g. for coupling to an antenna or a transmission line
H04J 4/00
Combined time-division and frequency-division multiplex systems

Family

Application63/145,692Us provisional application · filed 4 Feb 2021
Application17/649,904Parent of this continuation · filed 3 Feb 2022
US 2024/0048167 A1Pre-grant publication · published 8 Feb 2024
US 11,777,549 B2Parent of this continuation
US 2022/0247441 A1Published application
US 12,683,639 B2This patent

From the US filing history. Foreign family members aren’t listed.