Abdol Kalteh

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Breast cancer is the second leading cause of death for women all over the world. The correct diagnosis of breast cancer is one of the major problems in the medical field. From the literature it has been found that different pattern recognition techniques can help them to improve in this domain. This paper presents a novel hybrid intelligent method for(More)
The design and analysis of an ultra wideband aperture antenna with dual-band-notched characteristics are presented. The proposed antenna consists of a circular ring exciting stub on the front side and a circular slot on the back ground plane. By utilizing a parasitic strip and a T-shaped stub on the antenna structure, two notched bands of 850 MHz (3.5-4.35(More)
Abstract: Nowadays, step-down power converters such as buck scheme are widely employed in a variety of applications such as power supplies, spacecraft power systems, hybrid vehicles and DC motor drives. This paper determines the small signal averaged switch model (ASM) of the buck converter with parasitic elements consideration. Lossy analysis helps one to(More)
In this paper, a new Ultra-Wideband (UWB) Band-Pass Filter (BPF) for UWB applications is presented. The proposed filter is based on ring resonator with inter-digital coupling at both sides. The inter-digital coupling is used to providing strong coupling and to introduce capacitance effect to achieve at pass-band response. To achieve band rejection(More)
A novel band-notched elliptical slot antenna is presented for ultra-wideband communication. It is designed to work on a substrate RT/duroid 6006 that has a thickness of 1.27 mm and a relative permittivity (εr) of 6.15, and to operate in the UWB band released by FCC in 2002 (3.1-10.6 GHz). The proposed antenna is fed by an elliptical open ended microstrip(More)
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