ABSTRACT This article presents a new approach for linearly polarized cavity‐backed antennas. The design utilizes the advanced half‐mode substrate‐integrated waveguide (HM‐SIW) approach to form a radiating aperture instead of minimizing the structure. The HM‐SIW method reduces the antenna size by constructing a semicircular cavity. A 50‐ feedline is used to stimulate the cavity and ensure compatibility with the planar circuit. A single‐sided printed circuit board (PCB) layer is sufficient for implementation. The radiation characteristics of a proposed antenna have been measured. In addition, the radiation patterns of the proposed antenna were estimated using the antenna theory concept in an anechoic chamber. There is good agreement between the simulation and the observed measured results. These results show that the proposed hybrid resonator antenna (HRA) also has the advantages of conventional cavity‐backed antennas, including a wider fractional bandwidth (FBW) of 12.91% (7.56–8.62 GHz), overall gain of 7.05 dBi, radiation efficiency of 95.25%, and a simulated front‐to‐back ratio (FTBR) of 18.49 dB. The whole size of the LP proposed antenna is . This antenna offers several benefits: compactness, low profile, lightweight, low fabrication cost, and easy integration with planar circuits. It is mainly used for satellite communication systems.
Patil et al. (Sun,) studied this question.