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:
Nov. 22, 2011
Filed:
Apr. 20, 2009
Glen B. Backes, Maple Grove, MN (US);
Glen B. Backes, Maple Grove, MN (US);
Honeywell International Inc., Morristown, NJ (US);
Abstract
A transmit/receive switching circuit is provided. The transmit/receive switching circuit comprises a first transformer to split a transmission signal into a first split transmission signal and a second split transmission signal. The first split transmission signal is out of phase with the second split transmission signal. The transmit/receive switching circuit also comprises a second transformer to split a received signal into a first split received signal and a second split received signal and to combine the first split transmission signal and the second split transmission signal. The first split received signal is out of phase with the second split received signal. The combined transmission signal is supplied to an antenna port and the received signal is received from the antenna port. The transmit/receive switching circuit also comprises a third transformer to combine the first split received signal and the second split received signal and to supply the combined received signal to a receive port of the transmit/receive switch. Finally, the transmit/receive switching circuit comprises first and second switches. Both the first and second switches are coupled to the first transformer and to the second transformer. The first switch switches between coupling the first split transmission signal to the second transformer and coupling the first split received signal to the third transformer. The second switch switches between coupling the second split transmission signal to the second transformer and coupling the second split received signal to the third transformer.