Aerosol-generator comprising multiple supply elements

An aerosol-generator for an aerosol-generating device, the aerosol-generator comprising:

• a surface acoustic wave atomiser comprising:
• at least one substrate comprising an active surface defining at least one atomisation region,
• a first transducer positioned on the active surface of the at least one substrate, and
• a second transducer positioned on the active surface of the at least one substrate;
• a first supply element arranged to supply a first liquid aerosol-forming substrate to the at least one atomisation region;
• a second supply element arranged to supply a second liquid aerosol-forming substrate to the at least one atomisation region;
• at least one common reflector positioned on the active surface of the at least one substrate and being configured to reflect surface acoustic waves generated by the first transducer and the second transducer;
• and
• a controller configured to:
• provide a first drive signal to the first transducer to generate surface acoustic waves on the active surface of the at least one substrate,
• provide a second drive signal to the second transducer to generate surface acoustic waves on the active surface of the at least one substrate,
• provide the first drive signal to the first transducer only when the first liquid aerosol-forming substrate is supplied to the at least one atomisation region by the first supply element, and
• provide the second drive signal to the second transducer only when the second liquid aerosol-forming substrate is supplied to the at least one atomisation region by the second supply element;
• wherein the at least one atomisation region comprises a first atomisation region positioned on the active surface to receive surface acoustic waves generated by the first transducer and a second atomisation region positioned on the active surface to receive surface acoustic waves generated by the second transducer,
• wherein the first supply element is further arranged to supply the first liquid aerosol-forming substrate to the first atomisation region,
• wherein the second supply element is further arranged to supply the second liquid aerosol-forming substrate to the second atomisation region;
• wherein the at least one reflector comprises a common reflector,
• wherein the first atomisation region is positioned between the common reflector and the first transducer,
• wherein the second atomisation region is positioned between the common reflector and the second transducer;
• wherein the common reflector prevents surface acoustic waves generated by the first transducer being transmitted to the second atomisation region, and
• wherein the common reflector prevents surface acoustic waves generated by the second transducer being transmitted to the first atomisation region.