I am looking to use a single coax cable, say 10m long, for both power and data transmission between 2 units, which are sealed in their own metal boxes with no possibility for external antennas.
The power signal is 100-500kHz, 20-100Vp-p AC wave, close to sine, but with some harmonics on it. I really need AC for power on this coax because one of the units can be on a rotating table in a sealed metal chamber. The only way to transfer power is a rotating transformer.
I am hoping to put 2 embedded RF modules, preferably bluetooth, into the 2 boxes and connect them to the coax via capacitive or inductive means to protect them from the power signal.
This way, I hope, the coax will replace the antenna in between the modules and will shield them from external interference.
I would appreciate any comments on this idea.
Thanks,
Attachments:
| RF_module_question.pdf |
