Piezoelectric filter with low-Q inductances
Abstract
A passive bridge circuit for a narrow band filter was investigated in which the Q-factor of the inductance coils depends upon the requirements for the amplitude-frequency characteristic within the effective delay band. Each arm of the bridge circuit contains a quartz resonator in series with an inductance. Formulas are derived for the increase in attenuation of a filter with inductances in comparison with that of a filter without inductances at the same frequency. The use of the formula is demonstrated by designing a filter section with inductances. The experimental and measured amplitude frequency characteristics agree well.
- Publication:
-
USSR Rept Electron Elec Eng JPRS UEE
- Pub Date:
- January 1985
- Bibcode:
- 1985RpEEE.......21Y
- Keywords:
-
- Amplitude Distribution Analysis;
- Electric Bridges;
- Inductance;
- Linear Filters;
- Piezoelectric Transducers;
- Q Factors;
- Piezoelectricity;
- Resonant Vibration;
- Signal To Noise Ratios;
- Electronics and Electrical Engineering