kevinj
Advanced Member level 4
hfss1
When I simulate a dipole I use a lumped port, and place the port between the 2 feeds and this yields correct results.
If I put a ground plane under the feeds (see attachment) and use 2 lumped ports (1 for each feed) then I get different results. I'm trying to make the short dipole a 2 port antenna because I'm trying to make a matching circuit in ADS. The antenna must have a matching circuit because it's a short dipole. I will extract the matrix data (S, Z, Y, gamma) and use the results for ADS, but I need to make the dipole a 2 port antenna.
The attachment : there is not ground around the dipole. There are 2 feeds where each has a lumped port. A ground plane surrounds the antenna.
When I simulate a dipole I use a lumped port, and place the port between the 2 feeds and this yields correct results.
If I put a ground plane under the feeds (see attachment) and use 2 lumped ports (1 for each feed) then I get different results. I'm trying to make the short dipole a 2 port antenna because I'm trying to make a matching circuit in ADS. The antenna must have a matching circuit because it's a short dipole. I will extract the matrix data (S, Z, Y, gamma) and use the results for ADS, but I need to make the dipole a 2 port antenna.
The attachment : there is not ground around the dipole. There are 2 feeds where each has a lumped port. A ground plane surrounds the antenna.