Abstract

High gain circularly polarized substrate integrated waveguide (SIW) slotted cavity antenna is proposed using TE440 high order modes. A linear to circular polarization convertor is used in order to achieve a circular polarization (CP). The antenna has many attractive advantages such as low profile, light weight, and compact in size. Moreover, it offers both left and right hand circular polarization. High gain of 16 dBi is achieved and the efficiency is about 98%. In addition, the antenna has a good radiation pattern. Therefore, this antenna consider more appropriate for Future fifth generation (5G) wireless systems.

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