Samer Alabed^*, Mohammad Al-Rabayah, Wael Hosny Fouad Aly

CMC-Computers, Materials & Continua, Vol.73, No.3, pp. 5641-5653, 2022, DOI:10.32604/cmc.2022.030371

Abstract Rotman lens, which is a radio frequency beam-former that consists of multiple input and multiple output beam ports, can be used in industrial, scientific, and medical applications as a beam steering device. The input ports collect the signals to be propagated through the lens cavity toward the output ports before being transmitted by the antenna arrays to the destination in order to enhance the error performance by optimizing the overall signal to noise ratio (SNR). In this article, a low-cost Rotman lens antenna is designed and deployed to enhance the overall performance of the conventional cooperative communication systems without needing… More >

Omar A. Saraereh^1,*, Luae Al-Tarawneh², Ashraf Ali¹, Amani M. Al Hadidi³

Intelligent Automation & Soft Computing, Vol.31, No.1, pp. 607-619, 2022, DOI:10.32604/iasc.2022.020216

Abstract The frequency range of the terahertz (THz) band is usually defined as 0.3~3.0 THz, and some scholars have also extended it to 0.1~10 THz. THz technology has the characteristics of low photon radiation energy and rich spectrum information, and the THz band contains the vibration and rotation resonance frequencies of many material macromolecules, which can realize fingerprint detection. Therefore, THz technology has great academic value and a wide range of applications in basic research and applied science. Application prospects, such as THz spectroscopy technology provides a new means for studying the interaction between electromagnetic waves and matter, and its application… More >

Fahd N. Al-Wesabi^1,2,*, Murad A. A. Almekhlafi³, Huda G. Iskandar^2,4, Adnan Zain⁵, Saleh Alzahrani⁶, Mohammed Alamgeer⁶, Nadhem Nemri⁶, Sami Dhabi⁶, Mohammad Medani⁶, Ali. M. Al-Sharafi^2,7

CMC-Computers, Materials & Continua, Vol.69, No.2, pp. 1979-1994, 2021, DOI:10.32604/cmc.2021.018390

Abstract In recent years, there has been an increasing demand to improve cellular communication services in several aspects. The aspect that received the most attention is improving the quality of coverage through using smart antennas which consist of array antennas. this paper investigates the main characteristics and design of the three types of array antennas of the base station for better coverage through simulation (MATLAB) which provides field and strength patterns measured in polar and rectangular coordinates for a variety of conditions including broadsides, ordinary End-fire, and increasing directivity End-fire which is typically used in smart antennas. The method of analysis… More >