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Compared with conventional drying technology, microwave assisted drying technology has some remarkable properties, such as material-selective, instantaneous and volumetric heating, which leads to extremely broad applications in materials drying. The efficiency of microwave drying is found to be dependent on various factors, such as temperature, moisture content, the dimension of material and so on...
A miniaturized and high Selectivity bandpass filter (BPF) with harmonic frequency suppression is presented in this paper. The BPF with a central frequency of 3.2 GHz and 200MHz bandwidth is implemented in a novel distributed stripline configuration using LTCC (low-temperature co-fired ceramic) technology. This feature of harmonic frequency suppression is very important in communication system to improve...
In this study, the mode-matching method was applied to formulate an analytical model for a split cylindrical cavity resonator with a thick ceramic film layer sandwiched between two-layer alumina substrates. Next, resonant frequencies with the TE011 mode were computed with an eigenvalue problem approach using the model formula. The Q value of the resonator was also calculated by applying the perturbation...
In this paper, a band stop all-dielectric metamaterial frequency selective surface (FSS) is designed based on effective medium theory and dielectric resonator theory. The FSS is made of high-permittivity ceramics without using any metallic parts. The stop band FSS is composed of 2D arrays of Jerusalem cross-shaped ceramic resonators. Solid-state sintering method is adopted to prepare the high-permittivity...
In this paper, we proposed a type of all-dielectric metamaterial (ADM) with continues dielectric ceramics. The ceramics, possess high permitivity and low loss, are designed in fishnet shape. With this shape, continuous displacement currents are inspired inside high permitivity ceramics for the incident electromagnetic wave. Then, Lorentz type of electric and magnetic resonances are emerged simultaneously,...
A four-pole elliptic function bandpass filter is designed using compact miniaturized microstrip interdigital hairpin resonator. Miniaturization hairpin resonator is realized by using a interdigital capacitor. In addition, the bandpass filter was implemented with using high permittivity ceramic substrate. These effects result in the reduction of its size. The full-wave simulator IE3D is used to design...
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