Compact Tri Band Frequency Reconfigurable L-Slot Octagonal Shape Patch Antenna

Abstract

A frequency reconfigurable octagonal shaped patch antenna is designed and its properties are studied. In this paper, a microstrip patch antenna. In this antenna design patch of the antenna is separated into three parts by cutting the open ended L-slot on the both side of the patch. Here four PIN diodes are used for the operation. When the diode D 1 and D 3 is on than the antenna works on the frequency 4.6688 GHz, 7.8864 GHz and 10.662 GHz while the D 2 and D 4 is on state than this antenna works for the 5.1893 GHz, 8.2492 GHz and 11.467 GHz. This compact size antenna with the dimensions of the 25 X 28 mm 2 is design on the FR-4 substrate of the thickness h = 0.8 mm and the dielectric constant of this material is 4.4.

Design of Frequency Reconfigurable Antenna Working in Ka Band

“…Reconfigurable [2][3] antennas change the performance by changing the current moves on antenna, using phase shifters, mechanically changeable parts, tunable materials, and active materials. In Arrays antenna, they have many structures for controlling the current across the aperture and change the properties [4]. The way to achieve antenna reconfigurable properties based on the performance ability, the reconfigurable antennas [5] can be varied mainly in to two different categories: which uses switches one that uses electrical switch.…”