Efficient Anomalous Reflector Design Using Array Antenna Scattering Synthesis

Diversity performance of Modulated Scattering Antenna Array with switched reflector

1 Introduction The previous researches on the modulated scattering antenna array (MSAA) have shown that the second-order intermodulation scattering signal is relatively low compared with the direct received signal [1]. In this report, a switched reflector is used to solve this problem. The diversity performance of the MSAA with a switched reflector is investigated. It is shown that the diversit...

Antenna Array Design in Aperture Synthesis Radiometers 169 Antenna Array Design in Aperture Synthesis Radiometers

During the past few decades, there has been growing interest in the use of microwave and millimeter wave radiometers for remote sensing of the Earth. Due to the need of large antennas and scanning mechanism, the conventional real aperture radiometer becomes infeasible for high spatial resolution application. Interferometric aperture synthesis was suggested as an alternative to real aperture rad...

Array Feed System Design for Planar Array Fed Multibeam Reflector Antenna

Phased array antenna using MEMS phase shifter

This article presents a phased array antenna employing MEMS phase shifter. The proposed phased array antenna consists of eight square patch antennas operating at 10.4 GHz with a bandwidth of 400 MHz. Feed line for each patch passes through a MEMS phase shifter realized by a series of bridges above the transmission line. The distance between the bridge and the transmission line underneath it is ...

Regular Antenna Array Synthesis Using Neural Network

This paper considers antenna array synthesis for regular antenna array using neural network. Because of the best approximation property, radial basis function neural network is used. Assuming that large number of neurons is available, following the concept of human brain, the choice is made for neural network with exact solution. For given values of the radiation pattern we estimate the phase d...