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.:
Date of Patent:
Jan. 17, 2012
Filed:
Feb. 02, 2007
Applicant:
Viet Huynh, Murphy, TX (US);
Inventor:
Viet Huynh, Murphy, TX (US);
Assignee:
Cisco Technology, Inc., San Jose, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 1/44 (2006.01); H04J 3/00 (2006.01); H04L 5/14 (2006.01);
U.S. Cl.
CPC ...
Abstract
Techniques are provided herein for a receiver protection circuit in a time-division duplex (TDD) system. The receive protection circuit has a first diode with an anode that is coupled to an input of a low-noise-amplifier (LNA) and a cathode that is coupled to a ground. A controller is coupled to the anode of the diode and is configured to generate a control signal for turning on the diode when the TDD system is in a transmission mode. A load is coupled to the diode such that a reflected transmit signal is shorted to the ground by the diode and the radio frequency energy carried in the reflected transmit signal is consumed by the load.