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A millimeter-wave dual-band bandpass filter using substrate integrated waveguide (SIW) dual-mode cavities is proposed in this paper. The proposed filter consists of three SIW cavities, and each cavity can provide two resonant modes, the TE201 mode and TE102 mode, as well as a transmission zero. The resonant frequencies of TE201 and TE102 modes can be adjusted by the length and width of the SIW cavity,...
A parallel version of Method of Moments (MoM) with Higher-Order Basis functions (HOB-MoM) with the Out-of-Core technique (OOC) is proposed to compute the Radar Cross Section (RCS) of an aircraft with engine inlets in this paper. The block-partitioned parallel scheme for the large dense MoM matrix is designed to achieve excellent load balancing and high parallel efficiency. The OOC technology is employed...
This paper proposes a method to measure permittivity anisotropy in the plane of dielectric laminate substrates by utilizing orthogonality of TE111 mode in a circular cavity resonator. For cyclo-olefin polymer (COP), liquid crystal polymer (LCP) and glass cloth PTFE substrates, the permittivity anisotropy in the plane is measured by this method. As a result, usefulness of this method is verified by...
A circular cavity resonance method is improved to measure the frequency dependence of complex permittivity of a dielectric plate by using multimode TE0m1 with integer m of the higher order. The measurement principle is based on a rigorous analysis by the Ritz-Galerkin method. A new circular cavity with lowered height is designed to decrease the number of unwanted modes near the TE0m1 modes from a...
To measure the frequency dependence of complex permittivity of a dielectric rod inserted in the center of a cylindrical cavity, a new method using the multi-mode TM0m0 of the cavity is developed on the basis of the rigorous analysis, where the effect of sample insertion holes is taken into account. Three cavities using the TM010 and TM020 modes and two cavities using the TM010, TM020, TM030 and TM...
This paper, at first, discuss the availability of a cavity resonance method using the resonance frequencies of some TM0m0 modes in a circular cavity to measure the frequency dependence of a dielectric rod sample. The influence of sample insertion holes to the measurement are estimated accurately on the basis of the rigorous analysis by the Ritz-Galerkin method. Some dielectric rod samples were measured...
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