Patent · US Active

Radio frequency front end modules implementing coexisting time division duplexing and frequency division duplexing

US11777549B2 · kind B2 · utility

1Cited by

5References

22Claims

0Family size

Inventors

Joshua Haeseok Cho · Irvine, US
Stephane Richard Marie Wloczysiak · Irvine, US
Thomas Obkircher · Tustin, US
Junhyung Lee · Lake Forest, US
Rimal Deep Singh · Irvine, US
Bipul Agarwal · Irvine, US

Key dates

Filing date	Feb 3, 2022
Grant date	Oct 3, 2023
Priority date	—
Expiry date	Feb 3, 2042

Classification

Technology area (CPC H)Electricity
CPC primaryH04L5/1469
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.