El-Sayed M. El-Rabaie

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A new unit cell composite right/left-handed (CRLH) metamaterial using microstrip technology with coupled line is proposed. It is simple and has a small size. The proposed unit cell can be designed in several frequency bands based on its geometrical parameters. The transition from LH to RH shows the balanced condition without the presence of stop band. Two(More)
This paper presents a reflectarray antenna working at 28 GHz with polarization independent characteristics. The unit cell is composed of three circular rings optimized to achieve linear phase characteristics with the variation of the unit cell size. The array is composed of 400 unit cells of variable size arranged in a square shape aperture in order to(More)
Passive RF/microwave components (e.g. couplers, and filters) occupy big design area in the RF/microwave circuit and systems, especially when it work at low frequencies. This paper presents using of High Temperature Superconductor HTS for reducing the size of circuit design and maintains good performance, the surface impedance model is investigated and(More)
In this paper, the performance of Epsilon Negative Transmission line (ENG) coupler and coupled line coupler with tight coupling have been investigated. The two structures are simulated using two main field simulators HFSS that is based on finite element method FEM, and CST that is based on finite integration technique FIT and one circuit simulator (ADS).(More)
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