Mechanically Tunable Horn Filtenna For Mm-Waves

This work reports the development of a mechanically tunable horn filtenna, operating in millimeter waves. The proposed waveguide-based filtenna represents the integration of a horn antenna and mechanically tunable filter based on dual-post resonators. The filter length is less than one guided wavelength and positioned into the available waveguide section between the horn aperture and feeder. Numerical and experimental reflection coefficient and simulated radiation pattern validate the proposed structure. Experimental results demonstrate a frequency tuning from 17.4 to 24.7 GHz.