Wide band low profile linear microstrip antenna array with cosecant square‐shaped beam pattern

Abstract

A wide band, low profile linear microstrip antenna array with cosecant square‐shaped beam pattern is presented. Array synthesis has been done using Orchard Elliott's and genetic algorithm methods. An air‐dielectric U‐slot rectangular patch element has been chosen as an array element for wide bandwidth. Simulated results have shown a good agreement with the measured results of the antenna array realized over 15% bandwidth in L‐band. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 963–965, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22309

Design of wideband printed antenna array in corner reflector with cosecant square-shaped beam pattern

“…There are many algorithms and methods for design of cosecant-squared antennas [2][3][4]. However, few papers deal with the methods of realization of these antennas as printed structures.…”

“…After that, there is a feeding network that enables necessary amplitude and phase distributions obtained by Orchard Elliott's methods and genetic algorithm. The normalized amplitude, u i and phase shifts φ i , i=1,2,3,4 for four radiating elements are shown in Table I [2,3].…”

“…The measurement of the radiation pattern and VSWR in the wide frequency range for the proposed antenna array will be done soon. Table III summarizes the features of the proposed antenna array with four pentagonal dipoles and of the antenna array with four U-slot rectangular patch elements [3]. Both antennas use the same amplitudes and phases distribution of excitation of array elements enabling a cosecant squared radiation pattern (Fig.…”

“…Thus it achieves a 15.4 dBi gain and it has a better VSWR and bandwidth. Reference [3] reports that the gain of the antenna array with U-slot rectangular patch elements is better than 10 dBi although its value is not specific. Fig.…”

The Synthesis of Complex-Angle Zeros for on-Board Antenna Arrays

“…Examples are those of Woodward-Lawson [2] and Orchard-Elliot [3], and various improved versions [4][5][6][7]. The application of modern search techniques based on the perturbation of zeros on the Shelkunoff unit circle has enabled further advances to be made in these techniques and others [8][9][10][11][12][13], and indeed these search algorithms for optimizing radiation patterns have proven to be particularly efficient.…”