Band Pass Filter – Frequency Check Post

Receivers on the ground and in space do not require all radio/microwave frequencies that are crossing the sky at any given time.

Therefore, a band pass filter (BPF) is utilized to block/attenuate undesired frequencies and propagate only the calibrated range of a frequency band that a system/application is designed to process. As a result, it substantially reduces the latent noise levels in frequency transmission.

There are different types of band-pass filters available in the electronic market like linear/nonlinear, analog/digital.  and the most frequently used active and passive BPFs, all of these are used as per the design/circuitry needs.

Broadly, BPFs majorly fall into two categories: 1) Active bandpass filter and 2) Passive bandpass filter.

Active band pass filters use active components like transistors and Operational amplifiers and are used in very low frequency applications, on the other hand, passive band pass filters are configured using passive components like resistors, inductors, and capacitors are used in applications designed to handle very high frequencies.

Bandpass filters are an integral component of wireless and telecommunication systems, optic and acoustics systems, and applications. It is in satellite communication technology, atmospheric science and meteorological data mining.

It is also an indispensable component in Sonar, Seismology, EEGs, Electrocardiograms, lasers, LIDARS, and Audio Signal Processing applications, and devices.

All are available from Raditek Inc. full details on the Raditek website.