Abstract: The acoustically excited antennas based on the piezo-electric effect (PE) have been shown to reduce the size of the long wave communication system transmitter (Tx) to 10 −4 of the wavelength ...

Santa Net is an annual December event where licensed amateur radio operators use RF and EchoLink technology to connect children with Santa Claus on the airwaves.

Abstract: This letter proposes a low-profile trapezoidal patch quad antenna for 5G broadband mobile applications. The multiple-input–multiple-output (MIMO) four-antenna is printed on an FR4 glass ...