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:
Jul. 05, 2011
Filed:
Jul. 07, 2010
Alexandre Shirakawa, San Jose, CA (US);
Jean-baptiste David, Grenoble, FR;
Patrick Wurm, Voreppe, FR;
Claire Auer (Wurm), Legal Representative, Strasbourg, FR;
Alexandre Shirakawa, San Jose, CA (US);
Jean-Baptiste David, Grenoble, FR;
Patrick Wurm, Voreppe, FR;
Claire Auer (Wurm), legal representative, Strasbourg, FR;
Abstract
A power amplifier filter for radio-frequency signals having an outphasing type architecture comprising a first stage () capable of generating, from an input signal s(t), two signals s(t), s(t) having an identical amplitude but phase shifted relative to each other, a second amplifier stage () for said signals s(t), s(t), and a third recombining stage () capable of summing the two signals s'(t), s′(t) obtained from second stage (), characterized in that recombining stage () includes an assembly of acoustic wave resonators coupled to each other, some of these resonators referred to as 'input resonators' being connected to the outputs of second stage () and others of these resonators referred to as 'output resonators' being connected to the output terminals of the filter.