Group Delay/Phase Equalizer

Group Delay/Phase Equalizer


Many components in a system can be the source of group delay variation over frequency.  Filters can be a major source if there are rejection requirements near the frequency band being used.  As shown in the plot below, if the system uses waveguide, dispersion will add a group delay slope which becomes steeper as the waveguide length increases.   The pink line represents the group delay plot of a 5 inch WR28 waveguide length and the blue line is a 10 inch WR28 waveguide.  This group delay variation causes the system to require higher power to achieve the same bit-error-rate (BER) as if there was no group delay variation.  BER performance degrades with more phase distortion or group delay variation.


Exceed Microwave’s Group Delay/Phase Equalizer can be designed to inversely match your system’s group delay/phase distortion, resulting in a flatter group delay and lower phase variation.

The plot on the right shows a typical group delay plot of a filter (pink line), and the group delay performance after including Exceed Microwave’s group delay/phase equalizer (blue line).  The group delay variation has decreased significantly from 0.38ns to 0.18ns.

We are able to provide the group delay equalizers up to 67 GHz.

Ready to Request a Quote?

 If you’re struggling to find a great solution for your filtering needs, our RF engineers will directly work with you to provide what you’re looking for.  We take great pride in our products and service and strive to provide the highest quality available on the market today. Request a quote !