Quasi-optical systems are frequently designed on the assumption that the propagating radiation approximates to a fundamental-mode Gaussian beam; this can be described as a paraxial approximation to a solution of the scalar wave equation. Gaussian beam theory can be used to generate designs for ...
Advanced design methodologies and novel applications of reflectarray antennas Reflectarray antennas combine the numerous advantages of printed antenna arrays and reflector antennas and create a hybrid high-gain antenna with a low-profile, low-mass, and diversified radiation performance. Reflectarrays are now...
Electromagnetics Laboratory, Department of Electrical and Computer Engineering, University of Illinois-Urbana, USA Y. T. Lo, S. W. Lee Bibliographic Information Book TitleAntenna Handbook Book SubtitleTheory, Applications, and Design EditorsY. T. Lo, S. W. Lee ...
The paraboloid reflector is one example of how optical principles may be applied to microwave lens antenna, and the Lens Antenna is yet another. It is used
We found that the Pickett-Potter horn and horn-reflector antenna has good beam circularity and a return loss value better than -25 dB over a bandwidth of about 15%. 展开 会议名称: Eleventh international symposium on space terahertz technology: Eleventh international symposium on space terahertz ...
This paper presents the implementation of reflectarray antenna to produce nearfield focused patterns in a target area, which is very useful for the RFID reader applications. Numerical investigation has exhibited good characteristics. Since reflectarray has less complexity than phased array antennas in the...
This paper reports a most complex shaping of a dual gridded reflector (DGR) antenna for a stringent requirement. There is a requirement of a service area (India with islands) and 10 spatial isolation zones. This stringent RF requirements awake severe design complexity and challenges, which is ...
The corner antenna which has two surfaces on orthogonal planes is known as a dihedral corner reflector. This antenna has two plane reflectors which form 90* a dihedral angle. This type of reflector is formed whenever two conducting sheets are perpendicularly joined & this is used majorly in an...
(AMC), and parasitic strips. By utilizing the Brillouin dispersion diagram, the AMC is designed as the antenna reflector. It has a wide in-phase reflection bandwidth of 54.7% (1.54-2.70 GHz) and a surface-wave bound range of 0-2.65 GHz. This design effectively reduces the antenna profile ...
of feed arrays is arranged with respect to a respective portion of the single sub-reflector, or with respect to a respective one of the plurality of sub-reflectors, so as to form, along with a corresponding portion of the single main reflector, a respective dual-reflector antenna sub-system...