Multi-eccentric ring slot-fed dielectric resonator antennas for multi-frequency operations


A feed structure composed of multi-eccentric ring slots was proposed to feed DRA elements for multi-frequency operation. Simulated results show that the structure is valid. The coupled slots, excited by a coaxial cable in this work, can also be excited by other form feed structures, such as a microstrip line, or a coplanar waveguide (CPW). 

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