February 2, 2026

Horn antenna gain is determined by the aperture area, operating wavelength, and efficiency (typically taken as 0.6). The calculation formula is: 4π multiplied by the area multiplied by the efficiency, divided by the square of the wavelength. A larger aperture area or a shorter wavelength results in higher gain, which significantly enhances the directional transmission […]

Selection depends on matching the frequency (e.g., 2-40 GHz), ensuring gain error < ±0.5 dB and VSWR < 1.3. Understanding Frequency Each horn antenna corresponds to a specific WR waveguide standard; for example, WR-28 covers 26.5 to 40 GHz, with internal waveguide dimensions of 7.112 mm x 3.556 mm. The frequency level directly relates to