A new test system for measuring electric field profile in planar circuits such as microstrip-line has been developed. In order to estimate the measured electric field profile, the 3D full-wave analysis is carried out by using a finite-difference time domain technique for planar printed circuits in high-frequency ranges. A test system proposed in this paper based on a small coaxial probe antenna...

Substrate integrated waveguide (SIW) is a new form of transmission line. It facilitates the realization of nonplanar (waveguide based) circuits into planar form for easy integration with other planar (microstrip) circuits and systems. This paper describes the design of an SIW to microstrip transition. The transition is broadband covering the frequency range of 8 – 12GHz. The measured in-band in...

The following PhD thesis research has been conducted under the instruction of the Marie Curie Actions research centre at the Numerical Method Laboratory(LMN) program at the "POLITEHNICA" University of Bucharest (PUB), Faculty of Electrical Engineering, Romania. The Electrical Engineering program culminates with the PhD thesis project, which is closely guided by PUB faculty members associated wi...

background: in the current study the effect of shielded colpostat on rectum received dose was calculated in cervical brachytherapy using monte carlo (mc) method. materials and methods: two 60co sources of gzp6 brachytherapy unit used for intracavitary treatments were simulated using mcnpx monte carlo code. also the two types of colpostats including shielded and unshielded were simulated inside ...

The Dual Theorem of Lucchesi and Younger [3] states that in every (finite) planar directed graph, there is a minimum feedback set (an edge set containing at least one edge of each directed circuit) whose cardinality is equal to the maximum number of mutually edge-disjoint directed circuits. In this note we prove that an analogue of this classical result remains valid when 3-circuits (that is, t...

Planar directional coupler using Substrate Integrated Waveguide technology (SIW) is proposed in this paper. The SIW coupler with tapered microstrip-SIW transitions are integrated on the same substrate. Planar form makes this coupler structure easily integrable in microwave planar circuits. These proposed power dividers can be applied to the design of the beam-forming network for communication s...

Radiation pressure has recently been used to effectively couple the quantum motion of mechanical elements to the fields of optical or microwave light. Integration of all three degrees of freedom-mechanical, optical and microwave-would enable a quantum interconnect between microwave and optical quantum systems. We present a platform based on silicon nitride nanomembranes for integrating supercon...

Planar memristive devices with bottom electrodes embedded into the substrates were integrated on top of CMOS substrates using nanoimprint lithography to implement hybrid circuits with a CMOL-like architecture. The planar geometry eliminated the mechanically and electrically weak parts, such as kinks in the top electrodes in a traditional crossbar structure, and allowed the use of thicker and th...

An impedance measurement object with an H-shaped four-terminal equivalent substitution circuit is considered. error analysis was performed for sensors whose non-informative supply resistances are of the same order or exceed measured impedance. A new definition has been proposed, namely axial be-shielded (FTABS) measuring object. Based on such definition, scheme axial-bishielded bridges proposed...

In this article, we suggested a novel design of polarization splitter based on coupler waveguide on InP substrate at 1.55mm wavelength. Photonic crystal structure is consisted of two dimensional (2D) air holes embedded in InP/InGaAsP material with an effective refractive index of 3.2634 which is arranged in a hexagonal lattice. The photonic band gap (PBG) of this structure is determined using t...