HT5 is a broadband, high-gain log-periodic directional antenna with compact design and easy portability. It is suitable for various wireless communication systems and RF testing environments, providing stable signal reception and transmission. It can be flexibly paired with amplifiers, spectrum analyzers and vector network analyzers to meet testing and analysis needs in complex electromagnetic environments. Applications include mobile communication systems (phones, base stations), WLAN devices, BeiDou/GPS, 2.4 GHz and 5.8 GHz communication testing, as well as anechoic chamber testing, radio direction finding and positioning, spectrum and signal analysis, radar systems and Earth observation research.