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This paper presents the investigation and characterization of antenna design with harmonic suppression for wireless power transfer to improve the overall system performance for RF/microwave front-end subsystems. This study focuses on the geometry of antenna to produce filtering and radiating element on antenna circuit itself by suppressing unwanted signal resonate at higher order other than spurious radiation. The research work about antenna with harmonic suppression was reviewed and analyzed in order to propose optimum topology that suits in energy scavenging and most importantly the new proposed structure must have high gain for overall system performance. The printed antenna which is microstrip patch antenna are mostly used due to efficient radiators, lightweight, simple construction and cost effectiveness. This antenna with harmonic suppression would be useful in microwave systems and can be integrated with rectenna system or wearable energy application where the systems give size reduction.