A gasket-free electromagnetic shielding structure for 2.4 GHz band using folded quarter-wavelength SIW resonators
2016 IEEE International Symposium on Electromagnetic Compatibility (EMC)(2016)
摘要
In recent years, various types of new shielding structures realizing shielding effectiveness (SE) at specific frequency band have been reported. A gasket-free shielding structure using cascaded substrate integrated waveguide (SIW) resonators is one of them. The structure consists of cascaded SIW resonators with different resonant frequencies placed on inner walls of a gap. Though the structure has an advantage of being almost free of deterioration due to its non-contact structure, miniaturization of the SIW resonators is necessary to be applied at several GHz bands. In this paper, a gasket-free shielding structure using folded quarter-wavelength (FQ)-SIW resonators is proposed and its SE is evaluated. An FQ-SIW resonator is a miniaturized SIW resonator by applying a multilayer substrate and modifying position of the coupling slits. A prototype configuration for 2.4 GHz band is designed and fabricated using a five-layered FR4 substrate. The designed FQ-SIW resonators are miniaturized to almost 1/7 of conventional SIW resonators, and the measured results of the cascaded configuration showed more than 30-dB improvement of SE at 2.4 GHz band.
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关键词
SIW resonator,shielding structure,shielding effectiveness,2.4 GHz band,WLAN,electromagnetic analysis
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