I'd recommend you make your system scale appropriate. Considering that cellular transmissions are on the order of GHz, you're effectively simulating a circle of

I'd recommend you make your system scale appropriate. Considering that cellular transmissions are on the order of GHz, you're effectively simulating a circle of antennas around 1 m wide looking at what happens in the middle. That doesn't seem particularly relevant to the case of antennas being very far away (far-field vs near-field etc).