Wave transmission lines and networks – Coupling networks – Electromechanical filter
Reexamination Certificate
2011-07-05
2011-07-05
Summons, Barbara (Department: 2817)
Wave transmission lines and networks
Coupling networks
Electromechanical filter
C375S297000, C330S12400D, C330S295000
Reexamination Certificate
active
07973620
ABSTRACT:
A power amplifier filter for radio-frequency signals having an outphasing type architecture comprising a first stage (2) capable of generating, from an input signal s(t), two signals s1(t), s2(t) having an identical amplitude but phase shifted relative to each other, a second amplifier stage (3) for said signals s1(t), s2(t), and a third recombining stage (4) capable of summing the two signals s′1(t), s′2(t) obtained from second stage (3), characterized in that recombining stage (4) 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 (4) and others of these resonators referred to as “output resonators” being connected to the output terminals of the filter.
REFERENCES:
patent: 6552634 (2003-04-01), Raab
patent: 6741146 (2004-05-01), Ella
patent: 2005/0012570 (2005-01-01), Korden et al.
patent: 2005/0206476 (2005-09-01), Ella et al.
patent: 2006/0078067 (2006-04-01), Brobston
patent: 2007/0090892 (2007-04-01), Larson, III
patent: 2008/0129411 (2008-06-01), Beaudin et al.
patent: 2008/0297277 (2008-12-01), Meister et al.
patent: 2009/0096550 (2009-04-01), Handtmann et al.
patent: 2010/0272214 (2010-10-01), Wurm et al.
patent: 103 19 554 (2004-11-01), None
patent: 10 2004 049 499 (2006-04-01), None
Vinay Kulkarni et al., “Bandwidth Improvement Methods in Acoustically-Coupled Thin Film BAW Devices,” International Frequency Control Symposium and Exposition, 2006, IEEE, PI, Jun. 1, 2006, pp. 165-171.
Auer (Wurm), legal representative Claire
David Jean-Baptiste
Shirakawa Alexandre
Wurm Patrick
Burr & Brown
Commissariat a l'Energie Atomique et Aux Energies Alternatives
Summons Barbara
LandOfFree
Power amplifier filter for radio-frequency signals does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Power amplifier filter for radio-frequency signals, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Power amplifier filter for radio-frequency signals will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2636299