Electromagnetic Compatibility and Measurements

This article describes a plane-wave time-domain (PWTD) algorithm that facilitates the fast evaluation of transient wave fields produced by surface scattering. The algorithm presented relies on a Whittaker-type expansion of transient fields in terms of propagating plane waves. The incorporation of the PWTD scheme into…

• AHMET ARİF ERGİN

This communication presents two dual-polarized microstrip patch antenna systems based on a single radiating element with 180° ring hybrid coupler for differential feeding to achieve high interport RF isolation. One of the implemented single-layer patch antennas provides more than 67 dB isolation between transmit (Tx)…

• İBRAHİM TEKİN

The computational complexity of classical marching-on-in-time (MOT) methods for solving time domain integral equations (TDIEs) pertinent to the analysis of transient scattering phenomena involving perfectly conducting targets grows as O(N/sub t/N/sub s//sup 2/) (N/sub t/ and N/sub s/ denote the number of temporal and…

• AHMET ARİF ERGİN

We consider fast and accurate solutions of scattering problems involving increasingly large dielectric objects formulated by surface integral equations. We compare various formulations when the objects are discretized with Rao-Wilton-Glisson functions, and the resulting matrix equations are solved iteratively by emplo…

• ÖZGÜR SALİH ERGÜL

Electromagnetic field transformations are important for electromagnetic simulations and for measurements.Especially for field measurements, the influence of the measurement probe must be considered, and this can be achieved by working with weighted field transformations.This paper is a review paper on weighted field t…

Transmission-reflection methods suffer from the increasing uncertainty in the phase of reflection scattering (S-) parameter measurements of low-loss materials. In addition, transmissionS-parameter measurements produce multiple solutions for the complex permittivity. In this paper, we propose a broadband and stable met…

• UĞUR CEM HASAR

This letter presents a 2.4 GHz, dual-polarized microstrip patch antenna with extremely high interport isolation for a shared antenna architecture-based in-band full-duplex transceiver. The presented antenna configuration is based on four-ports linearly polarized single radiating element with differential feeding for b…

• İBRAHİM TEKİN

The aim of this study was to investigate long-term effects of radiofrequency radiation (RFR) emitted from a Wireless Fidelity (Wi-Fi) system on testes. The study was carried out on 16 Wistar Albino adult male rats by dividing them into two groups such as sham (n: 8) and exposure (n: 8). Rats in the exposure group were…

The aim of this study was to investigate long-term effects of radiofrequency radiation (RFR) emitted from a Wireless Fidelity (Wi-Fi) system on testes. The study was carried out on 16 Wistar Albino adult male rats by dividing them into two groups such as sham (n: 8) and exposure (n: 8). Rats in the exposure group were…

• SÜLEYMAN DAŞDAĞ

The aim of this study was to investigate long-term effects of radiofrequency radiation (RFR) emitted from a Wireless Fidelity (Wi-Fi) system on testes. The study was carried out on 16 Wistar Albino adult male rats by dividing them into two groups such as sham (n: 8) and exposure (n: 8). Rats in the exposure group were…

• MUZAFFER TAŞ

A fast algorithm is presented for solving electric, magnetic, and combined field time-domain integral equations pertinent to the analysis of surface scattering phenomena. The proposed two-level plane wave time-domain (PWTD) algorithm permits a numerically rigorous reconstruction of transient near-fields from their far…

• AHMET ARİF ERGİN

We investigate the ability of the bow-tie slot antenna to generate intense optical spots below the diffraction limit. A commercially available finite-difference time-domain electromagnetic modelling software is used in the numerical simulations. The finite-difference time-domain software is first compared to analytica…

• İBRAHİM KÜRŞAT ŞENDUR