Abstract
A dual band double square patch with 2-bridges printed microstrip patch antenna is presented in this paper. The ntenna operates at centre frequencies of 2.4GHz and 9.7GHz which can be used for wireless local area networks and radio navigation or radio location applications in S-band and X-band respectively at low powers. The dual band antenna has good simulated return loss and bidirectional radiation characteristics. The electromagnetic (EM) simulation software is used for the simulation. The antenna is designed on FR-4 substrate with dielectric constant of 4.4 and thickness of 1.6 millimeter(mm). It is fed with 50Ω coaxial feed line and the total size of antenna is 40×40 mm2. The antenna has return loss lower than -10dB, compact structure, ease of designing, and low manufacturing cost. Two square patches are designed 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 network (WLAN) and radio navigation applications.
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