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:
Jun. 29, 2004
Filed:
Nov. 21, 2001
Walter Kodim, Nürnberg, DE;
Telefonaktiebolaget LM Ericsson (publ), Stockholm, SE;
Abstract
An R.F. antenna switch ( ) for coupling either a high-loss port ( ) or a low-loss port ( ) to a common port ( ) includes an unequal power splitter ( ) with the high-loss port ( ), the low-loss port ( ), and the common port ( ). The unequal power splitter ( ) further has at least one high-loss path ( ) coupled between the common port ( ) and the high-loss port ( ) and a low-loss path ( ) coupled between the common port ( ) and the low-loss port ( ). The R.F. antenna switch ( ) further comprises a switching element ( ) having an input ( A) coupled to the low-loss port ( ) and an output ( B) coupled to a terminating element ( ). The low-loss port ( ) is terminated with the characteristic impedance of the unequal power splitter ( ) when the switching element ( ) is switched on.