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This paper presents a novel miniaturization technique for half-mode substrate integrated waveguide (HMSIW) bandpass filters using cross-shaped fractal structures. The overall filter area is reduced by 28% and 37% compared to conventional HMSIW bandpass filters when the first and second iterations of the cross-shaped fractals are used, respectively. In addition, the miniaturized filters exhibit lower...
Carbon nanotubes exhibit high dielectric constants. They have potential for miniaturizing RF and microwave components. In this paper, this property is utilized to realize a miniaturized CNT-based RF resonator. The resonator structure is excited through a 50-Omega copper-based transmission line. The preliminary design is developed using a full-wave high frequency structure simulator (HFSS). Experimentally-extracted...
A dual band microstrip plasmonic resonator antenna has been designed using a SRR and a feed line that also functions as a monopole antenna. This is the new aspect of the antenna design. The feed line is placed adjacent to the SRR, so that there is sufficient coupling to excite the plasmonic resonance and at the same time the line can radiate as an independent monopole antenna. The antenna has two...
We use the split-cylinder cavity's TE111 resonant mode, in addition to the higher-order TE0np modes, to extend the frequency range over which one can nondestructively measure the permittivity of dielectric substrates. In addition to the frequency range of the split-cylinder resonator, we also demonstrate that measurements performed with the TE111 mode allow us to calculate the frequency of the higher-order...
It has been considered that it is difficult to realize higher frequency devices than 3 GHz by using conventional surface acoustic wave (SAW) substrate. In order to realize a high frequency device, there are some methods such as using a high velocity substrate or shortening a wavelength (lambda) of an interdigital transducer (IDT). However, almost of all conventional SAW substrates have a low velocity...
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