Employing the dumbbell-shaped longitudinal slot antennas in the planar slotted antenna arrays

Abstract

The dumbbell-shaped longitudinal slot antennas are employed as a replacement for the round-ended longitudinal slot antennas. Each dumbbell-shaped slot is excited by an iris and a septum that have offsets from the waveguide centerlines. All the slots are also cut along the waveguide centerlines. It is demonstrated that the resonant length of the proposed dumbbell-shaped slot antennas is much smaller than the round-ended longitudinal slot antennas. Hence, the end-to-end spacings between the adjacent radiating slots as well as the end-to-end spacings between the coupling and the radiating slots increased noticeably in comparison with the arrays consist of the round-ended longitudinal slot antennas. This fact indicates that one can neglect the mutual coupling between the neighboring slots that are associated with the exciting higher-order modes at the slot positions. To better demonstrate the effectiveness of the proposed dumbbell-shaped slot antennas, a planar array antenna consists of the proposed dumbbell-shaped slot antennas have been designed, implemented, and tested. The measurement and the simulation results confirm the effectiveness of the proposed slot antennas.

Diseño de un Arreglo de Antenas Microstrip con Parches en forma de Elipse Dual Band para aplicaciones de Wi-Fi y WiMAX

“…Los slots ofrecen características únicas que son de interés para muchos diseñadores de antenas. Su alta eficiencia, polarización lineal, incorporación de sistemas de alimentación y radiación, manejo de alta potencia y rigidez mecánica son algunas de sus ventajas [10]. Las antenas de ranura permiten simplificar el diseño y ampliar la funcionalidad [11].…”