A novel E-plane horn antenna fed with Tee junction, conceptualized using the substrateintegrated waveguide (SIW) technology is introduced and investigated. Conventional SIW-inspired designs are mostly limited to H-plane sectoral horns, portraying confined radiation along while unconfined, fan-beam-shaped principal E-plane. Such characteristics restrict its usage requiring an electric field para...

The hydrothermal reactions of [A-alpha-SiW(9)O(34)](10-)/[A-alpha-PW(9)O(34)](9-) with NiCl(2) x 6H(2)O and amines yielded four unprecedented hybrid high-nuclear Ni-subsituted polyoxotungstates.

Planar antenna reflectors are the modern design trend of both multibeam and frequency-scanning arrays. The planar implementation is typically performed using substrate-integrated waveguide (SIW) technology. A reflector’s profile can be different from canonical one (parabolic, elliptic, hyperbolic, etc.) because effect spatial dispersion reflection coefficient SIW-based surface. It should synthe...

We attempt to design and fabricate of a 4×4 Butler matrix for short-millimeter-wave frequencies by using the microfabrication process polytetrafluoroethylene (PTFE) substrate-integrated waveguide (SIW) synchrotron radiation (SR) direct etching PTFE addition metal film sputter deposition. First, dimensions SIW rectangular through-holes G-band (140-220 GHz) operation are determined, cruciform 90 ...

Nanometric ions, such as polyoxometalates (POMs) or ionic boron clusters, with low charge density have previously shown a strong propensity to bind macrocycles and adsorb neutral surfaces: micellar, surfactant covered water–air polymer surfaces. These association phenomena were arise from solvent-mediated effect called the (super-)chaotropic effect. We show here by combining cloud point (CP) me...

A four-way power divider/power combiner using substrate integrated waveguide (SIW) and microstrip lines is proposed and investigated. The proposed power divider consists of a double-layer substrate with a bottom layer including an SIW T-junction and a top layer including a microstrip network. This microstrip network consists of a modified Gysel power divider which provides a high isolation betw...

The reaction of a saddle-distorted Mo(v)-dodecaphenylporphyrin complex and a Keggin-type polyoxometalate gives a discrete and nanosized molecule, [{Mo(DPP)(O)}(2)(H(2)SiW(12)O(40))], which involves direct coordination between the Mo(v) centers and terminal oxo groups of the polyoxometalate and exhibits excellent stability in solution to show reversible multi-redox processes.