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Based on the principle of broadband filters with stub-loaded resonator (SLR), a principle is proposed to design broadband antennas by loading resonators to radiator. Similar to SLR, when a dipole is loaded with resonators, its high-order resonant modes can be close to the first mode, leading the broadband impedance match. The proposed resonator-loaded dipole (RLR) is applied to design the base-station...
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