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Log Periodic Slot Based Monopole Antenna with Defected Ground Structure for Wireless and Satellite Communication Applications


B. Siva Hari Prasad, Dr. M.V.S. Prasad
Abstract

A novel compact log Periodic patch antenna with Defected Ground structure (DGS) operating for Wireless and satellite communication applications is proposed and investigated. This proposed antenna generates five different resonances operate at 2.7 GHz (WLAN), 5.8 GHz (WiMAX), 7.1 GHz(C Band), 8.3 GHz(X Band) and 13.6 GHz(Ku Band) while maintaining overall compact size of 32x32x1.6 mm3 using a FR-4 substrate commonly available with a permittivity of ╬Ár = 4.4. The proposed microstrip Patch Antenna (MSPA) consists of a square radiator in which a Log Periodic slot is etched out along with square defects on ground surface and a microstrip feed line. The log periodic slot with DGS modifies the total current path thereby making the antenna to operate at five useful bands. The structure shows the impedance bandwidth of 2.3% (2.6-2.73GHz), 3.78% (5.02- 6.0GHz), 6.05% (6.75-7.62GHz), 2.21% (8.15-8.52GHz) and 3.22% (13.22-14.1GHz) with gains 2.6, 2.1, 3.5, 5.8 and 2 dB respectively. The antenna performance is analyzed using numerous parametric optimization studies, field distributions and currents. Excellent agreement is obtained between measured and simulated results.

Volume 11 | Issue 7

Pages: 688-698