I’m trying to multiplex the antenna output of the RFID board I have to multiple antennas so I can determine which one is being read. Of course I can have more readers but I’m trying to save money.
I can get the multiplexer working with just normal voltage applied to the input with the LEDs turning on at their designated slots. Currently I have it changing the output every 100ms.
When I try to connect the antenna from the RFID board the LEDs (I’m only using them to test but not in the final design) they no longer follow the sequence but twinkle. They mostly stay on with a slight dimming every now and then but not in the correct sequence.
I can get multiple external antenna working fine without the multiplexer but of course I can’t then tell them apart.
I’m quite new to antenna design so have no idea why or what is happening here.
Attached is a sketch of my wiring and a photo of how i connected to the antenna on the RFID board.
Any help would be greatly appreciated.