Abstract
A capacitive coupled Dielectric Resonator Antenna (DRA) array based on log periodic technique is investigated experimentally for X-band applications. The Frequency Independent DRA array consists of seven rectangular Dielectric Resonators (DRs). The DRA array has been excited by a series fed microstrip line. Since the resonators are directly coupled to the feed line, it results in more compact and lower loss DRA array. The proposed DRA array has been designed and realized. The measured results are in good agreement with the simulations. The designed array is operating over the frequency range 6.2–12.2 GHz for 2:1 VSWR with the fractional bandwidth 65.2%. The array provides a peak gain of 9.09 dBi with the broadside radiation pattern over the widespread operating band. The proposed design is useful for X-band applications.
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