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Full-Text Articles in Engineering

Dual Band Dual Polarized Antenna With High Efficiency For Base Transceiver Stations, F. H. Kashani, M. Shahpari, Hossein Ameri Mahabadi Jan 2008

Dual Band Dual Polarized Antenna With High Efficiency For Base Transceiver Stations, F. H. Kashani, M. Shahpari, Hossein Ameri Mahabadi

Hossein Ameri Mahabadi

In this paper new array element for use in dual band dual polarized antenna will be introduced that has high efficiency (more than 95%) and has high isolation in both 900MHz and 1800MHz bands. Also radiation pattern of this antenna is according to IEC recommendation.


A Novel Bandpass Waveguide Filter Structure On Siw Technology, Z. Sotoodeh, B. Biglarbegian, F. Hojat Kashani, Hossein Ameri Mahabadi Jan 2008

A Novel Bandpass Waveguide Filter Structure On Siw Technology, Z. Sotoodeh, B. Biglarbegian, F. Hojat Kashani, Hossein Ameri Mahabadi

Hossein Ameri Mahabadi

Taking the advantage of common waveguide filters and SIW technology, a new filter structure is proposed.This structure can be implemented for various microwave frequencies by choosing appropriate low loss substrates.An example of suggested structure in Ku band is presented in this paper.The filter is designed and simulated on a low loss RT/Duroid 5880 laminate.The resulted filter has a Quality factor around 150.The main advantage of the structure is low size and cost, simplicity in fabrication, and the ability of integration with other elements of the circuit