Broadband cavity-backed aperture-coupled vertically mounted strip antenna

초록

A novel cavity-backed aperture-coupled antenna having a vertically mounted (VM) strip is proposed, where the signal is fed to the antenna from a microstrip feed through an aperture-coupled microstrip-to-waveguide transition. Broadband characteristics are achieved by the introduction of the VM strip. An equivalent-circuit model for this antenna that reflects the effects of various structure parameters is proposed. Based on this equivalent circuit, an X-band antenna was designed by optimizing for broadband, low loss, and highly efficient operation. The measured S-11 of the fabricated antenna showed excellent broadband characteristics (47%) and was in reasonable agreement with predictions derived from the equivalent circuit and numerical simulation.

키워드