Playing with Filters

1 Scope

Well, the title of this page is "Playing with Filters". This is meant literally. So I just wanted to play around a little with my HAMEG HMS-3010 and see how I could build a bandpass and how to understand the steepness of the flanks.

The background was an idea to construct a bandpass for the frequency range mainly between 1090 MHz (ADS-B) and about 1300 MHz (23 cm band). I wanted to suppress the lower signals quite effectively, and thus maybe create a filter for GPS experiments at 1575 MHz.

2 Creating the filter

3 Measuring the filter

4 Measurement setup