US 11,894,830 B2
Surface acoustic wave device
Thi Mai Pham Colomban, Palaiseau (FR); Claude Prévot, Palaiseau (FR); Paolo Martins, Palaiseau (FR); Anne-Christine Hladky-Hennion, Marcq en Baroeul (FR); Bertrand Dubus, Ronchin (FR); Marianne Sagnard, Besancon (FR); Thierry Laroche, Besancon (FR); Sylvain Ballandras, Besancon (FR); and Charles Croenne, Lille (FR)
Assigned to THALES, Courbevoie (FR); CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Paris (FR); SOITEC SA, Bernin (FR); YNCREA HAUTS DE FRANCE ISEN LILLE, Lille (FR); UNIVERSITE DE LILLE, Lille (FR); ECOLE CENTRALE DE LILLE, Villeneuve D'Asco (FR); and UNIVERSITE POLYTECHNIQUE HAUTS-DE-FRANCE, Valenciennes (FR)
Appl. No. 17/418,824
Filed by THALES, COURBEVOIE (FR); CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Paris (FR); FREC'N'SYS, Besancon (FR); YNCREA HAUTS DE France ISEN LILLE, Lille (FR); UNIVERSITE DE LILLE, Lille (FR); ECOLE CENTRALE DE LILLE, Villeneuve D'Ascq (FR); and UNIVERSITE POLYTECHNIQUE HAUTS-DE-FRANCE, Valenciennes (FR)
PCT Filed Dec. 27, 2019, PCT No. PCT/EP2019/087103
§ 371(c)(1), (2) Date Jun. 27, 2021,
PCT Pub. No. WO2020/136262, PCT Pub. Date Jul. 2, 2020.
Claims priority of application No. 1874201 (FR), filed on Dec. 28, 2018.
Prior Publication US 2022/0060173 A1, Feb. 24, 2022
Int. Cl. H03H 9/145 (2006.01); H03H 9/02 (2006.01); H03H 9/64 (2006.01)
CPC H03H 9/14502 (2013.01) [H03H 9/02637 (2013.01); H03H 9/02992 (2013.01); H03H 9/64 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A frequency-agile surface acoustic wave device comprising:
at least one transducer (T1, T2),
two acoustic reflectors (M1, M2) disposed on either side of the at least one transducer so as to form a cavity, each acoustic reflector comprising an array of electrodes (R1, R2) in the form of rows that are parallel to one another, each array comprising a subset of electrodes connected to a reference potential denoted ground (M) defining a first type of connection (CC), and a subset of electrodes which are not connected to any potential, that is to say which have a floating connection defining a second type of connection (CO),
at least one switching circuit (CCOM) configured to modify the distribution of the connections of at least a part of the electrodes of each array between the different types of connection.