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. 12, 2016
Filed:
Sep. 03, 2014
Raytheon Company, Waltham, MA (US);
Mark J. Beals, Fort Wayne, IN (US);
David E. Mussmann, Spencerville, IN (US);
RAYTHEON COMPANY, Waltham, MA (US);
Abstract
A multicarrier radio frequency (RF) transceiver implementing dynamic spectrum access (DSA) is capable of sensing a spectral environment and transmitting an RF signal at the same time. The transceiver can cancel an RF transmit signal component within a composite receive signal using a combination of analog and digital cancellation. In one embodiment, analog RF cancellation is performed to reduce the level of a transmit signal component of a composite receive signal before the signal reaches an RF receiver. The RF cancellation may be used to reduce the transmit signal component to a level that maintains the linear operation of the RF receiver. Digital cancellation may be performed to reduce transmit signal remnants within an output signal of the RF receiver. Digital cancellation may be performed on a subcarrier-by-subcarrier basis in some implementations.