Abstract
In this paper, a new class of triple-mode dielectric resonator filter is presented, consisting of dual TM11 degenerate modes and fundamental TM01 mode. The dielectric rod resonator with conductor-loaded is short circuited on the bottom surface to the metallic cavity. Besides, electromagnetic analysis about resonance modes is discussed in detail to design proper coupling elements, which include short circuited columns and slots. In final, a triple-pole filter with 40 MHz wide filter at 1.35 GHz is designed and simulated to demonstrate the new filter technology.
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