Size is important, but the correct size for the TV-frequency band is most important. The simplest antenna is a half-wave ...

HT is an open-source hardware VHF or UHF radio designed to plug into the USB-C port of an Android smartphone and turn it into a handheld ham radio ...

Once upon a time, ham radio was all about CW and voice transmissions and little else. These days, the hobby is altogether richer, with a wide range of fancy digital data modes to play with.

Abstract: In this letter, we propose a novel low-profile dual-band dual-circularly-polarized antenna with a compact structure. The proposed shared-aperture antenna hybridizes a folded transmitarray ...

Abstract: We present a novel design of a frequency-scanned leaky-wave antenna with dual-band operation in the 2.4 GHz and in the 5 GHz ISM bands of the Wi-Fi wireless LAN standard. It is designed in ...