LF Radio Project... A 40kHz quartz crystal BPF for JJY(40kHz) receiver

長波の無線機を開発しようと、今、いろんなことに取り組んでおります。その中でも、特にキーデバイスであるクリスタルフィルタを設計製作し、どのような特性が得られるのか調べてみました。
A 40kHz quartz crystal BPF has been designed, assembled and tested.

Block diagram

40kHz quartz crystal Band Pass Filter

Measuring devices

A computer system for data analysis

Measurement data

The evaluation has been performed by comparing the actual measurement data and the simulation data.

The actual data and the simulation data are well-matched.

And the following step...

The 2 stage quartz crystal BPF for more attenuation over the out of band.