The LowPass Chebychev Type 2 Filter

A somewhat rare type of filter in the passive element format. However this chebychev type has proved very usefull as a transmitter harmonic filter. Use the zero's to filter the harmonics of a Band II transmitter. Adjust the order (N) and stop band attenuation to get the minimum thro' loss and yet achieve harmonic suppression. The variant of zero's from series resonant LC is the best practical choice. Note: Even order filters are modified to include an infinity pole. This means fstop will be moved slightly upwards in frequency. ENSURE CALCULATED before continuing.

Design Specification

The Design Components

Picture the design and components here.

The Magnitude Response

Picture the magnitude graph here.

The Phase Response

Picture the phase graph here.

The Roots, Poles and Zeroes

Table these things here here.

Calculate the order required

The order data collection.