Abstract

The growth innovation and versatility in wireless energy harvester have attracted an attention on the development of antennas. This paper presents microstrip patch antenna design of a dual-band radio frequency (RF) energy harvester system for self-powered devices. The antenna is designed using a slot-coupled structure to realize for dual microwave bands operation. By using an optimization parameter of 50Ω feed point on microstrip line, the proposed patch antenna has achieved good impedance matching. Parameter design of the feed point with the optimal extension length, ΔL improves the performance at targeted resonating frequencies. COMSOL Multiphysics 5.1 electromagnetic package is utilized for the simulation and analysis process. The proposed antenna provides good performance parameter in terms of radiation pattern and return loss. The simulated results indicate satisfactory return loss performance of −31.867 dB and −24.437 dB in the dual narrowband resonance frequencies at 1.9GHz and 2.45GHz respectively. This property of results can be employed in rectifier of RF energy harvester system.

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