To automate tuning, an Arduino switches a bank of capacitors and inductors in and out of the circuit. By varying the load, it can find the ideal matching for the given antenna and frequency.

We have all seen Printed Circuit Board (PCB) antennas: those squiggly bits of traces on PCBs connected often to a Bluetooth, WiFi or other wireless communication chip. On modules like for the ...

4). 4. (A) Schematic for all-3D-printed antenna system consisted of a horn antenna and transmitarray. (B) Photo of the assembled 20-cm transmitarray being measured. (C) Comparison between the ...