Patent ID: 11920994
Assignee: APPLIED MATERIALS, INC.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 16:
17. A sensor assembly comprising:
a first surface acoustic wave (SAW) sensor adapted to measure a first environmental condition responsive to receiving a first RF signal, the first SAW sensor comprising:
a first interdigitated transducer (IDT) formed on a substrate comprising at least a layer of a piezoelectric material, the first IDT comprising a first base resonant frequency; and
a first dielectric coating of at least one of a first thickness or a first material disposed on the first IDT, wherein at least one of the first thickness or the first material is associated with a first shift in the first base resonant frequency, wherein the first IDT with the first dielectric coating has a first adjusted resonant frequency, and

a second SAW sensor adapted to measure the first environmental condition responsive to receiving a second RF signal, the second SAW sensor comprising:
a second IDT formed on the substrate or on a second substrate, the second IDT comprising the first base resonant frequency or a second base resonant frequency; and
a second dielectric coating of at least one of a second thickness or a second material disposed on the second IDT, wherein at least one of the second thickness or the second material is associated with a second shift in the first base resonant frequency or the second base resonant frequency, wherein the second IDT with the second dielectric coating has a second adjusted resonant frequency.