I have decided, late in the design process, to add BLE functionality to my project, so I need to think about antennas.
I don’t have enough PCB space for any of the common microstrip designs and I don’t have enough vertical space for a 1/4 wave monopole. I could snake a 1/4 wave wire around the enclosure, but I know that if I do that, it will no longer be 1/4 wavelength electrically.
Everything I have read on Bluetooth antenna design focuses on efficiency and range. I don’t really need either. I would be happy if I could get consistent communication at 1 or 2 meters distance.
Has anybody used BLE on the Onethinx module with a random wire antenna (or no antenna)? If so, do you think I could get the minimal performance that I need?