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In this work we present the benefits of using pentagonal dipoles as radiating   elements instead of classical printed dipoles in the design of frequency   scanning antenna arrays. We investigate how impedance of pentagonal dipoles,   which can be changed in a wide range, influences the overall characteristics   of the uniform antenna array. Some very important antenna characteristics   such as side lobe level, gain and scanning angle are compared for three   different antenna arrays consisting of identical pentagonal dipoles with   impedances of 500 Ω, 1000 Ω and 1500 Ω. [Projekat Ministarstva nauke   Republike Srbije, br. TR-32024 i br. III-45016

Frequency scanning antenna arrays with pentagonal dipoles of different impedances