Microwave Band Pass Filter (BPF) Calculator

This page provides information about a Microwave Band Pass Filter (BPF) calculator. This calculator determines the Shape Factor and Quality Factor of a BPF.

EXAMPLE:

• INPUTS:
  • Fc (Center Frequency) = 3 GHz
  • BW 3dB (3dB Bandwidth) = 120 MHz
  • BW 60dB (60dB Bandwidth) = 350 MHz
• OUTPUTS:
  • Shape Factor = 2.91
  • Quality Factor = 25

Microwave BPF Equation

BPF stands for Band Pass Filter. Filters can be categorized into two types based on their capabilities to process signals: analog or digital. As the name suggests, filters pass a certain range of frequencies while blocking others. Based on how they handle different frequencies, they are further categorized into band pass, low pass, high pass, and band stop filters.

Filters operating at higher microwave frequencies are referred to as microwave filters. A Microwave BPF typically allows frequencies within a specific range (the frequency band) to pass through.

The following equation is used by the Microwave BPF calculator: