Mifare Reader with two antennas

Hello people....

I need a way to switch between two antennas mifare at the same reader.
Now i have two antenna on the same reader and working. They not read
the same time.
But i need just one powered each time.

Please someone can help me ?
Have a nice new year everybody !

Hi,
I beliefe that you can apply a simple (manual)small switch, or an analog switch/simple FET too between
TRX IC & lines to both antennas... Short wired!
K.