Abstract-Design and development of a low profile, compact, wide beam and wide band printed double layered exponentially tapered slot antenna (DTSA) with a coplanar waveguide (CPW) feed meant for wide scan active phased array antenna in X-band has been presented. DTSA satisfies the requirements on the maximum reflection coefficient of Γ ≤ −10 dB for ±60 • and ±45 • scan from broadside in H-and Eplanes, respectively with a moderate gain of 4-7 dBi. Realized antenna has shown a symmetric pattern together with moderately high gain, low cross-polarization and 3 dB beam width better than ±60 • and ±45 • in H-and E-planes, respectively. The designed structure is expected to find applications in mounting platforms with limited RF real estate available to it like in military aircrafts, owing to its easy integration with the uni-planar monolithic millimeter-wave integrated circuits.

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Abstract-This paper presents parametric analysis of Flat Sandwich Multilayer Radome using Boundary Value Solution technique. The effect of variations in the characteristics of constituent layers of Radome on its microwave transmission properties has been studied. This work has relevance in development of Planar Array Radar Antennas especially for airborne platforms.

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

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