How to create finite ground plane in ADS?

Iam currently working on ADS Momentum2003A for antenna design

Can anyone suggest

How to Create finite ground plane in ADS?
Also suggest some good papers reg UWB Antennas that can be implemented using ADS 2003A

u hav to model a finite ground plane

in edaboard itself good papers on uwb antennas are posted ..or u should go through Mic and Opt. Tech Letters and IEEE journals

Usualy - radiating monopole over a ground plane. Can give 3-4 GHz of bandwith. In some occasions it is not convinient to use, especialy if there are other objects nearby - they limit the BW

Ya there are papers relating to UWB that I have seen but Iam interested in knowing procedure in ADS to create ground plane ?

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