The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 7468638 B1

PDF
Full Text
Expired
Date of Patent:
Dec. 23, 2008

Filed:

Jun. 19, 2007
Applicants:

King Chun Tsai, San Jose, CA (US);

Weijun Yao, Mountain View, CA (US);

Dong Hun Shin, Wonju-si, KR;

Inventors:

King Chun Tsai, San Jose, CA (US);

Weijun Yao, Mountain View, CA (US);

Dong Hun Shin, Wonju-si, KR;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03B 5/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

An integrated transmit/receive (T/R) switch device comprises a substrate, an antenna port to couple with an antenna, a transmitter port to couple with a transmitter, and a receiver port to couple with a receiver. A receive path is provided between the antenna port and the receiver port, and a transmit path is provided between the antenna port and the transmitter port. The transmit path includes a first transistor on the substrate, and the first transistor is coupled in series between the antenna port and the transmitter port. A body node of the first transistor is unconnected, and the substrate is configured to provide a high impedance path from the first transistor to a reference voltage. A second transistor on the substrate is coupled in series between the receiver port and the reference voltage.


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Tsai, King. (2008). Transmit/receive switch device (U.S. Patent No. 7468638). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7468638

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