Design of Broadband Rectangular Microstrip Patch Antenna Inset ?L? Shaped Feed with Rectangular ?L? Slots in Ground Plane

Abstract

This paper proposes a patch antenna that uses metamaterial as base construction. Design methodologies including the metamaterial and patch antenna have been explained in detail. The simulation results show that an antenna with metamaterial substrate has improved bandwidth and return loss significantly without changing the frequency. The new inspired metamaterial antenna contributes the best return loss of more than -22dB and 386MHz bandwidth wider than the conventional patch antenna. This type of antenna is able to take advantage of wireless applications.

Analysis of a Modified Ground Plane Microstrip Patch Antenna Using Co-Axial Feed

“…However, conventional ways of size reduction in patch antenna are a shorting pin, slots, etc. Wireless communication systems require wider bandwidth, multiband or dual band and low-profile antennas for singular applications [6][7].…”

“…These slots, when accordingly designed to the dimensions of the slot by hit and trial rule and increase the current path within the patch area. These help in lowering the resonant frequency of the microstrip patch antenna and, therefore, lead to size-reduction as well as enhance the bandwidth [7][8].…”

Novel Decoupling Technique for Enhancing the Mutual Coupling Between Printed Antennas

“…Those techniques include cavity backing, partial substrate removal, corrugations, split ring resonators (SRR), defected ground structures (DGS), periodic structures like high impedance electromagnetic surfaces (HIES) or electromagnetic bandgap structures (EBG), etc. [9][10][11].…”

“…This kind of antennas is suitable for mobile devices; furthermore, it is easy to integrate with active and passive microwave components. To overcome the individual low gain limitation, especially for the applications that requires high gain and high directivity, antennas array structures are used [6][7][8][9][10][11][12]. Yet, the main limitation of these structures is the mutual coupling between elements of an array which adversely affects the radiation characteristics such as antenna gain, radiation efficiency, bandwidth and the overall system performances.…”