Dual Band Microstrip Antenna with Double Square Patch and Conical Bridges for Wireless Applications
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A dual band printed microstrip patch antenna consisting of double square patch with 2-bridges is designed and proposed in this paper. The antenna operates at two resonating frequencies of 2.4GHz and 9.7GHz. FR-4 substrate is used for designing the antenna which has a dielectric constant of 4.4 and thickness of 1.6 millimeter (mm). The antenna has a compact size of 40×40 mm2 including the ground plane whose size is same as that of substrate. It is fed with 50Ω coaxial feed line. The proposed antenna has bidirectional radiation characteristics with good simulated return loss lower than -10dB. The electromagnetic (EM) simulation software is used for the simulation. The antenna has ease of designing, low manufacturing cost and small size which can be easily integrable in portable communication devices. Two square patches are aimed to obtain dual band operation. The larger patch resonates at 2.4GHz and the smaller patch resonates at 9.7GHz respectively. This antenna can be used for wireless local area networks (WLAN) and radio navigation or radio location applications in S-band and X-band respectively at low powers. Simulation results are in good agreement with the measurement results.
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