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In this study, the mode-matching technique (eigenmode expansion) was applied to formulate an analytical model for a split cylindrical cavity resonator with a thick ceramic film layer sandwiched between 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...
This paper presents a reflection-type 90 GHz substrate integrated cavity resonator sensor realized in LTCC technology for lab-on-chip microfluidic applications. A linear relationship between the resonance frequency of the sensor and the permittivity of the material under test was observed from measurements on low-loss materials. Calibration curves are also obtained for water-isopropanol mixtures which...
Dual-radial cavity resonators are proposed to design SIW bandstop filter. The bandstop filter is designed by coupling two radial cavity resonators to the SIW line. The designed bandstop filter operates at a centre frequency of 9GHz and implemented on RT/Duriod 4350 substrate with a thickness of 0.508mm and relative permittivity of 3.66. Two single cavity resonator bandstop filters are designed first...
A bandstop filter utilizing Substrate Integrated Waveguide cavity resonators coupled to the SIW line is presented in this paper. Prior to this research, rectangular cavity resonator was utilized to provide a bandstop response. In this paper, circular and radial cavity resonators are proposed to provide a bandstop response. The filters are designed to operate at X-band and implemented on RT/Duriod...
In this paper, a novel compact X-Band band pass filter (BPF) with low loss and narrow-band using low temperature co-fired ceramic (LTCC) technology is proposed. This four pole filter is based on substrate integrated circular cavity (SICC) resonators, and the slots excitation with lambda/4 open stub is used here. This filter with simple structure exhibits an insertion loss of 0.66dB at center frequency...
In this paper, the substrate integrated waveguide (SIW) cavity resonator is proposed. The coupling between SIW cavity and microstrip line is achieved by the electric field at the vertical center plane along the propagation direction. Unlike the conventional cavity coupling structure that shows absorption characteristics at the resonant frequency, it can be easily integrated into planar form. The cavity...
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