Filtering Dielectric Resonator Antenna Using Terminal-Loaded Resonators

A new filtering dielectric resonator (DR) antenna (DRA) is presented in this paper. The DRA and its feedline provide a bandpass response. The antenna feedline consists of two terminal-loaded microstrip resonators (MRs), which gives two independently tuned nulls with an improved selectivity. For the DRA, it is excited in the HEM
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mode, serving not only as a radiator but also as the last-stage resonator of bandpass filter (BPF).