Abstract
A log-periodic dielectric resonator antenna array for Ku-band (12 to 18 GHz) applications is investigated. The resonators of a seven-element rectangular-shaped dielectric resonator antenna array are arranged in a log-periodic fashion. The proposed antenna is excited by a log-periodic microstrip series feed line. It provides broadband with 46% of wider impedance bandwidth covering a frequency range of 11.4 to 18 GHz with |S 11| less than −10 dB. The proposed array achieved a maximum gain of 11.4 dBi at a frequency of 14.5 GHz. The measured S-parameter, gain, and radiation patterns are presented for different frequencies. The scaling factor of 1.05 has been chosen for this design. Simulated results are compared favorably with physically measured values.
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