Surface wave device balun resonator filters

H - Electricity – 03 – H

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

H03H 9/64 (2006.01) H03H 9/00 (2006.01) H03H 9/02 (2006.01) H03H 9/145 (2006.01)

Patent

CA 2233835

A surface wave device comprises first and second SPUDT (single phase unidirectional transducer) resonator filters (72, 74) each comprising first and second transducers, which are preferably RSPUDTs (resonant SPUDTs), the resonator filters being the same except that one transducer (R1M) of the second resonator filter is a mirror image of the corresponding transducer (R1) of the first resonator filter to provide a phase difference of 180°. The surface wave device serves as a balun by having an unbalanced signal connection (78) to the first transducers, and a balanced signal connection (84, 84') comprising signal connections to the second transducer of each of the first and second resonator filters. The resonator filters can be arranged side by side on a common piezoelectric substrate (76).

L'invention est un dispositif à ondes de surface comportant un premier et un second filtre résonnant à transducteurs unidirectionnels monophasés (72, 74) contenant chacun un premier et un second transducteur qui sont des transducteurs unidirectionnels monophasés résonnants dans la concrétisation privilégiée de l'invention, ces filtres étant identiques à l'exception du fait que l'un des transducteurs (R1M) du second filtre résonnant est l'image miroir du transducteur correspondant (R1) du premier filtre résonnant pour produire un déphasage de 180 °. Le dispositif à ondes de surface de l'invention sert de symétriseur, ayant une connexion non symétrique (78) avec les premiers transducteurs et une connexion symétrique (84, 84') avec le second transducteur de chacun des deux filtres résonnants. Ceux-ci peuvent être montés côte à côte sur un même substrat piézoélectrique (76).

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Surface wave device balun resonator filters does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Surface wave device balun resonator filters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Surface wave device balun resonator filters will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1380131

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.