Abstract
The design, fabrication, and performance characteristics of LiNbO3-based wideband nonlinear interdigital chirp transducers are reported. A 54% bandwidth centered at 720 MHz has been obtained for a collinear deflector on a YX substrate. A 66% bandwidth at a midband frequency of 600 MHz has been designed for a Bragg deflector on a YZ substrate with electrodes tilted to satisfy the Bragg condition. Both transducers are down-chirp designs. The chirp waveform has been optimized using an accurate model of analysis. The transducers have been fabricated using 10:1 reduction projection printing and the liftoff technique. Good agreement has been found between theory and measurement. No severe bulk wave generation has been observed.
| Original language | English |
|---|---|
| Pages (from-to) | 269-272 |
| Number of pages | 4 |
| Journal | IEEE MTT-S International Microwave Symposium Digest |
| Volume | 1 |
| State | Published - 1989 |
| Externally published | Yes |
| Event | IEEE MTT-S International Microwave Symposium Digest 1989 - Long Beach, CA, USA Duration: 13 Jun 1989 → 15 Jun 1989 |