Equivalent circuit and properties of surface wave planar resonators
Abstract
The surface acoustic wave grating resonator can be used in frequency control applications and in filter synthesis problems involving the VHF and UHF frequency ranges. It consists of two gratings which form an acoustic cavity and an interdigital transducer that is employed to couple energy into and out of the cavity. A number of models for the grating resonator are considered, taking into account a three-port model, a two-port grating model, and a one-port termination model. An apodization method for reducing sidelobe levels along with experimental results indicating its effectiveness is also discussed.
- Publication:
-
29th Annual Symposium on Frequency Control
- Pub Date:
- 1975
- Bibcode:
- 1975frco.symp..158J
- Keywords:
-
- Cavity Resonators;
- Digital Transducers;
- Equivalent Circuits;
- Frequency Control;
- Planar Structures;
- Surface Acoustic Wave Devices;
- Electrical Impedance;
- Gratings (Spectra);
- Mathematical Models;
- Piezoelectric Crystals;
- Reflectance;
- Sidelobe Reduction;
- Electronics and Electrical Engineering