SAWTRON Technology

SPUDT and RSPUDT

Spec Check up and
Basic Setting

Frequency, Metal thickness, Die Dimensions, Wafer, Attenuation Point, Group Delay and Ripple Calculation Points

Digital Filter
Synthesys

Ramez Algorithm, Least Square Algorithm

Roots
Calculation

No limit on number of roots

Roots
Separation

Minimum phase, linear-linear, zero add up, Roots exchanges, Input and Output Weigting Separation

Withdrawal
Weighting

Withdrawal Synthesis of Input/Output Transduction/Reflection Weighting

Optimization

Digital Optimization of Full Weightings including Shielding Bar Weighting in Frequency Domain

Mask
Generation

DXF, GSD Format

General Information of Single Track SPUDT
1. High Loss and Good Shape Factor Filter
2. Wafer : Quartz, LiTaO3
3. Fractional Bandwidth : - 2.5 %
4. Weighting :
   1) Input : Single Phase Unidirectional Transducer (SPUDT)
   2) Output : Single Phase Unidirectional Transducer (SPUDT)
   3) Shielding Bar : Only Reflection Weighting