Abstract
In this paper, a resonator based on composite right/left handed transmission line concept is discussed. This resonator excites -1st order resonance mode. We start with half-wave resonators consisting of two unit cells of a composite right/left handed transmission line. From the simulated field distributions, the center of these half-wave resonators can be short-circuited to obtain a quarter-wave resonator in the -1st mode. Susceptance slope parameters are calculated for the resonator. Then this resonator is applied for a 2-pole filter made by LTCC, which can be designed with standard filter design theory owing to the slope parameter. The dimension of the experimental filter implemented by LTCC is 2.5mm by 1.35mm by 0.52mm. The insertion loss is 1.80dB at the 2.4GHz band. Good agreement between measured and computed results is obtained.
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