The hydrothermal reactions of α-K(4)SiW(12)O(40) with NiCl(2)·6H(2)O yielded two unprecedented silicotungstates containing a triangular inorganic Ni(6) core. Furthermore, Na(2)[Ni(6)(μ(3)-OH)(3)(H(2)O)(9)SiW(9)O(34)](2)·17H(2)O (1) presents a rare dimer, in which two SiW(9) units sandwich double Ni(6) cores by W-O-Ni linking instead of conventional Ni-O-Ni.

In this paper, a novel W-band substrate integrated waveguide (SIW) power combiner/divider is analyzed theoretically and demonstrated experimentally/numerically, based on the antipodal fin-line SIW-rectangular waveguide (SIW-RW) transition and longitudinal slot coupling techniques. This antipodal fin-line SIW-RW transition can work at the frequency band of 86.4GHz– 106.1GHz with return loss larg...

A novel compact dielectric loaded Exponentially Tapered Slot (ETS) antenna using Substrate Integrated Waveguide (SIW) technology is presented in this paper for Millimeter (Mm) wave wireless communication applications. The dielectric loaded ETS antenna and compact SIW feed are fabricated on a single substrate. The compact SIW feeding structure results in a considerable reduction in size and elim...

A new design method of the dual-band balanced bandpass filter (BPF) using multilayer packaging dual-mode substrate integrated waveguide (SIW) cavities is proposed. Split-type coupling topology based on resonators developed for design. Firstly, a single-band with perturbed metal vias designed. The TE201 mode and TE202 by can form passband. Secondly, an additional SIW cavity same placed in lower ...

This article presents a novel dual slant polarized antenna for millimeter-wave (mmWave) base stations. Compared with the traditional mmWave antennas, proposed offers advantages of high cross-polarization discrimination (XPD), good aperture efficiency, simple structure, and low profile. The corner-fed substrate integrated waveguide (SIW) cavity is adopted to improve port isolation XPD this slot-...

A Dielectric Resonator loaded Substrate integrated waveguide cavity backed slot antenna (SIDRA) is proposed for two slot polarizations and orientation. A SIW-fed cylindrical DRA using rectangular slot is used for obtaining bandwidth of about 5% at 6.15 GHz. For enhancing bandwidth, a plus shaped slot with bandwidth of about 8.80% and gain of 3.7 dB is proposed. The proposed antenna represents S...

The Dielectric Resonator Antenna (DRA) is one of the efficient radiator which is used to achieve broadband and cost effective communication in wireless technology. The Substrate Integrated Waveguide (SIW) technology is the most assuring structure for implementation of circuits and components for millimeter wave and microwave applications. A design approach to improve the impedance bandwidth of ...

Herein, a rigorous derivation of an isosceles right-angled triangular (IRT) metallic cavity is analysed. Then, the transverse field components in IRT substrate-integrated waveguide (SIW) are derived, and expression resonant frequencies can also be obtained. novel perturbed SIW proposed, which based on characteristics modes capacitive-loading technique. Three prototypes were designed to verify v...