High Gain Printed Radial Leaky Wave Antenna for Millimeter-Wave Applications

الملخص

This paper proposes a two-dimensional (2D) radial printed periodic leaky-wave antenna (LWA). The proposed LWA is designed using substrate-integrated waveguide (SIW) technology. A radial substrate-integrated waveguide (SIW) with rectangular SIW is designed, and then two-dimension slots on the top of the proposed structure are etched. The wave propagation inside the guide is leaked out through periodic slots, the distribution of these slots results in a low side lobe level (SLL), and a high gain. As a result of the geometry of the proposed antenna and slot distribution, the radiation pattern gained a promised properties such as a high gain, a low side lobe level (SLL), and low cross-polarization. The simulated gain of the antenna is 20 dBi with SLL less than -21 dB and cross-polarization less the -35 dB. The antenna is proposed in order to work with millimeter-wave (mm-wave) applications. The resulting proposed antenna is simulated through a well-known full wave simulator CST STUDIO package.