This page illustrate a few IceConeFeed variants that can easily be achieved from the orignal base models.

Bandwidth of v2.0 to 500MHz

Wire diameter and winding number can be utilized to increase reception bandwidth.

Below you see an example of an LHCP and RHCP version tuned for 500MHz bandwidth within 2100-2500MHz:

Increasing center frequency of v2.1 to 2491.75MHz