"JOURNAL OF RADIO ELECTRONICS" (Zhurnal Radioelektroniki)  ISSN 1684-1719, N 5, 2017

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Research of characteristics of UWB planar two-dimensional periodic TEM horn arrays

 

V. A. Kaloshin 1,2 , K. Z. Nguyen 2

1 Kotel’nikov Institute of Radio Engineering and Electronics of RAS, Mokhovaya 11-7, Moscow 125009, Russia

2 Moscow Institute of Physics and Technology (State University), 141701, Moscow region, Dolgoprudnyy, Institutskii lane, 9

 

The paper is received on May 21, 2017

 

Abstract. Using the finite element method a numerical study of the matching and radiation characteristics of two types of UWB two-dimensional periodic planar arrays of TEM horns is conducted. The first type is regular TEM horn array, the second type is array of TEM horns with the partially metallization space between the horns. An infinite two dimensional planar array and a 36-element array (6x6 elements) are investigated. It is shown that two types of infinite planar in-phase arrays are matched in the frequency bandwidth more than 1:40, and 36-element array - in the frequency bandwidth more than 1:10. At  the scanning regime the operating frequency bandwidth of the arrays is narrowed both by matching and growth of the side lobes, as a result of which the frequency bandwidth of the infinite array of the first type is retained only in the sector of 90x30 degrees, the infinite array of the second type only in the sector of 60x60 degrees, where the first angle refers to E plane, and the second - to H plane. For the 36-element array of the first type, the frequency bandwidth is retained scanning range of 30 degrees in E – plane, and for the 36-element array of the second type the frequency bandwidth is retained in the scanning sector of 60x60 degrees. Special attention is paid to analysis of side lobes and backward radiation of the arrays, the increase of which limits the operating frequency bandwidth of the arrays.

Key words: UWB antennas, planar antenna array, two-dimensional array, scanning, backward radiation.

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 For citation:

V. A. Kaloshin , K. Z. Nguyen. Research of characteristics of UWB planar two-dimensional periodic TEM horn arrays. Zhurnal Radioelektroniki - Journal of Radio Electronics, 2017, No. 5. Available at http://jre.cplire.ru/jre/may17/14/text.pdf. (In Russian)