Browsing Network & Communication by Author "Roshani, Sobhan"
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A Compact Filtering Coupler with Unwanted Harmonic Rejection Using LC Composite Lines for Communication Systems Applications
Roshani, Saeed; Yahya, Salah I.; Mezaal, Yaqeen Sabah; Chaudhary, Muhammad Akmal; Al-Hilali, Aqeel A.; Ghadi, Yazeed Yasin; Karimi, Mohsen; Roshani, Sobhan (MDPI, 2023)In this paper, new LC lumped components and composite lines are used to create a filtering branch line coupler (FBLC) with a small size and wide suppression band. New composite lines are proposed using applied LC lumped ... -
A Compact Microwave Quadrature Hybrid Coupler Using Capacitive Composite Lines and Meandered Stubs
Roshani, Sobhan; Yahya, Salah I.; Assaad, Maher; Chaudhary, Muhammad Akmal; Hazzazi, Fawwaz; Ghadi, Yazeed Yasin; Ali, Sarmad M.; Roshani, Saeed (Multidisciplinary Digital Publishing Institute (MDPI), 2023-12)In this paper, a new structure of the quadrature hybrid coupler (QHC) with compact size is proposed using capacitive composite lines and meandered open stubs. The proposed coupler works at 1.6 GHz with a 0.4 GHz bandwidth, ... -
Mutual Coupling Reduction in Antenna Arrays Using Artificial Intelligence Approach and Inverse Neural Network Surrogates
Roshani, Saeed; Koziel, Slawomir; Yahya, Salah I.; Chaudhary, Muhammad Akmal; Ghadi, Yazeed Yasin; Roshani, Sobhan; Golunski, Lukasz (Multidisciplinary Digital Publishing Institute (MDPI), 2023)This paper presents a novel approach to reducing undesirable coupling in antenna arrays using custom-designed resonators and inverse surrogate modeling. To illustrate the concept, two standard patch antenna cells with 0.07λ ...