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The investigation of X-band wideband antenna arrays composed of balanced travelling wave slot antennas


S.L. Chernyshev – Dr.Sci. (Eng.), Professor, Scientific Researcher Institute of Radio-Electronic Engineering, Bauman MSTU
A.R. Vilenskiy – Scientific Researcher Institute of Radio-Electronic Engineering, Bauman MSTU

Travelling wave slot antennas (TSA) is a well-known type of ultra-wideband (UWB) radiators, widely discussed earlier. Typically achieved for such antennas UWB matching, stable angle-temporal characteristics and close to constant group delay stipulate their active implementation in wideband and UWB impulse systems. In this paper we propose a novel modified TSA to adopt it performance in wideband X-band antenna arrays by reduction of array elements mutual coupling. The idea of modification is an additional dielectric inclusion in the end-fire area of a radiator. We start from synthesis of the singular balanced TSA using the minimization of internal reflections criterion. Then, a dielectric element is included into the design. Its parameters are optimized during full-wave simulations. After achieving the required performance for (8,5 - 9,8) GHz band we succeed to three-element linear array investigation. Such model helps to reveal mutual coupling levels between nearest neighbour elements. And we found the considerable reduction of coupling in (7 - 16) GHz band for array with the proposed TSA. Then the proposed TSA was investigated in planar oblique array by its simulation in a finite segment. The results predict wideband array element matching for wide-angle scanning in H-plane. On the other hand, frequency characteristics stability is lower for E-plane scanning due to stronger element coupling in E-plane. Summarizing we can conclude that proposed modified TSA design is very suitable for wideband antenna arrays.

  1. Gibson P.J. The Vivaldi aerial // 9th European Microwave Conference. 1979. P. 101-105.
  2. Janaswamy R, Schaubert D. Analysis of tapered slot antenna // IEEE Trans. Antennas Propag. Sept. 1987. V. 33. P. 1058–1065.
  3. Zwick T. Ultra-wideband RF system engineering. Cambridge University Press. 2013. P. 43-56.
  4. Schaubert D., Kasturi S., Boryssenko A.,  Elsallal W. Vivaldi antenna arrays for wide bandwidth and electronic scanning // in Proc. 2nd Eur. Conf. Antennas Propag. Edinburgh, U.K. Nov. 11–16. 2007. 6 P.
  5. Cherny'shev S.L., Vilenskij A.R. Analiz dispersionny'x xarakteristik pogonny'x parametrov e'lementarny'x otrezkov sverxshirokopolosny'x balansny'x pechatny'x shhelevy'x antenn begushhej volny' // Nauka i obrazovanie: e'lektronnoe nauchno-texnicheskoe izdanie.  2013. № 4.
  6. Amitej N., Galindo V., Vu Ch. Teoriya i analiz fazirovanny'x antenny'x reshyotok. M.: Mir. 1974. 455 s.

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