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The objective of this study was to design a receive only, vertically-polarized marine X-Band radar antenna with the following specifications: Frequency of operation: 9.4 GHz Horizontal beamwidth: 1.0 degrees Vertical beamwidth: 20 degrees Maximum horizontal aperture: 10 feet Gain: 30 dB Horizontal sidelobes: less than 30 dB Bandwidth: 1.5 percent or 150 MHz The design study was to yield an antenna...
A planar linearly dual-polarized mm-wave antenna array is designed, fabricated, and investigated in detail. The requirements are two orthogonal polarizations with good purity and suitability of the array column for 1-D beamforming applications. Since single-layer fabrication without using vertical interconnection accesses is another important requirement, the chosen radiating elements are square microstrip...
The technique of using randomly rotated circularly polarized microstrip antennas as the elements of concentric ring array (CRA) for radar cross section (RCS) reduction is presented in this paper. The main concept of the technique is that a rotated microstrip antenna can provide additional phase shift for the reflected wave. When all elements are rotated randomly, the diffuse, instead of the cophasal,...
In this letter the design and simulation of an 0.43GHz P/UHF band microstrip patch antenna as single element, 2, 4, 8 & 16-element linear array using RT/duroid 6002 substrate was proposed. An inter-element spacing of 0.73λ for limited scan angle coverage. Wind profiling radar operating in Doppler beam swinging mode and spaced antenna drift technique mode needs to have a large aperture antenna...
Detection of blind spot area of an intelligent mobile vehicle is presented in this paper. In order to scan the concerning area, a phased array radar is designed. The approach is of two fold. Firstly, microstrip phased array antenna with progressive phased shifter is designed and subsequently, it is optimised for improvement of performance through parametric studies and array distribution using Tchebyscheff...
The present work is on the design of a microstrip phase array antenna with the required feed elements for the phased array radar that is used to detect the blind spot area of an intelligent mobile vehicle. The current ratio and side lobe level of the array is calculated using Tchebyscheff distribution.
In this paper, a new planar antenna array based on 9 identical quasi-Yagi elements is presented. In contrast to conventional designs, the feeding network is composed of 3-way power dividers, which are carefully designed in order to provide synchronised output signals over a wide frequency range. The use of spline-shaped microstrip lines suppresses coupling effects by parallel lines. Thus, signal distortions...
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