A synthetic aperture radar (SAR) sensor antenna is the main concern in this research work. The specifications are settled according to link budget of a project funded by Egyptian Space Agency. should achieve 30 dBi gain and an SLL less than -27 dB with low-profile simple structure. proposed array 16 x 18 planar elements that based on microstrip technology. consists linear arrays each. Each elem...

The problem of directivity enhancement, leading to the increasing in gain over a certain desired angle arrive/departure (AoA/AoD), is considered this work. A new formulation on volumetric array proposed using rectangular coordinates describe each antenna element, and azimuth elevation angles with general element pattern. Such formulated find optimal minimum distance between antenna-elements dmi...

This article presents a new design of differentially fed substrate integrated planar antenna array with dual-polarization. Compared the traditional dual-polarized arrays, proposed has advantages simple configuration, high cross-polarization discrimination (XPD), and gain. The 2×2-element subarray via-loaded crossover structure is used, which reduces complexity antenna. operation bandwidth impro...

Line-of-sight (LoS) multiple-input multiple-output (MIMO) gives full spatial-multiplexing gain when the antenna array geometry and orientation are designed based on the inter-terminal distance. These known design methodologies, that hold for antenna arrays with fixed orientation, do not provide full MIMO gains for arbitrary array orientations. In this paper, we study LoS MIMO channels with rand...

The digital beamforming antenna array is one of the most important components in wireless communication systems used in defence applications to improve the system capacity and spectral efficiency. The pattern synthesis of active antenna array is required in many defence applications like radar, satellite communication, sonar, mobile communication etc., where interference signals are considered ...

The parallel processing systolic array architecture is designed for the real time VLSI spatio temporal 3D Infinite Impulse Response (IIR) frequency planar filter to achieve high throughput of one frame per clock cycle (OFPCC). To reduce the circuit complexity by designing the architecture, that is based on differential form transfer function of a 3D IIR frequency planar filter. The 3D Look Ahea...

This paper presents the design, simulation, and measurement of two low-cost broadband circularly polarized (CP) printed antennas: a single element and an array at C band. The proposed single element antenna is excited by an L-shaped strip with a tapered end, located along the circular-slot diagonal line in the back plane. From the array experimental results, the 3 dB axial ratio bandwidth can r...