UWB antenna dispersion

Hi,

I'm looking for literature on Antenna Dispersion analysis and/or compensation methods specially for uwb antennas. Any help will be appreciated.
There is a workshop text from Schantz on the issue but I couldn't find it anywhere on the web. any body got a copy?

Thanks in advance,

I am sure Hans would be delighted to make a copy available.

There is some discussion of dispersion (and variation of group delay) in the UWB literature but it takes significant effort to find comments. It seems to be a hotter topic in impulse based UWB compared to OFDM.

This is primarily why Vivaldi's are more popular than LPD's in the context of UWB. Both antennas otherwise have similar characteristics.

Thank you for your reply.
So you suggest that I ask himself to give me a copy?
How could I reach him?

Thanks in advance,

www.amazon.com ......

You could contact him directly and maybe you will get lucky. He is not hard to find.