Zhurnal Radioelektroniki - Journal of Radio Electronics. ISSN 1684-1719. 2020. No. 3
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Full text in Russian (pdf)
Russian page

 

DOI 10.30898/1684-1719.2020.3.8

UDC 621.396.67

 

RESEARCH OF A PLANE TWO DIMENSIONAL OVER WAVE RANGE ANTENNA ARRAY WITH A FEED SYSTEM

 

V. A. Kaloshin ¹, N. T. Le ²

¹Kotelnikov Institute of Radioengineering and Electronics of Russian Academy of Sciences, Mokhovaya 11-7, Moscow 125009, Russia

²Moscow Institute of Physics and Technology (National Research University), 9 Institutskiy per., Dolgoprudny, Moscow Region, 141701, Russia

 
The paper is received on March 2, 2020

 

Abstract. Using a numerical and physical experiment, a study of the characteristics of matching and radiation of a flat two-dimensional antenna array of TEM horns with metallization of the interstitial space and a feed system was made. As part of a numerical experiment using the finite element and finite difference time domain method, electrodynamic modeling of the elements of the feed system and antenna array of 64 TEM horns with the feed system when scanning in the E and H plane in the 90 degree sector was carried out. The feed system of the array contains two power dividers and delay lines. The first of the dividers is sequential division based on a 50-ohm coaxial line, the second is parallel division based on a symmetrical strip line. Losses in the delay lines were not taken into account in the simulation. The reflection coefficient of power dividers in the frequency range 0.3 GHz - 7 GHz is below the level of -25 dB. The matching band of the antenna array with the power supply system at a level of -10 dB in cophased mode and when scanning in the 90⁰ sector in the H - plane is more than 19: 1, and when scanning in the E - plane it is more than 15: 1. As part of a physical experiment, measurements were made of the reflection coefficient of the cophased mode array of 32 TEM horns above the ground and its radiation patterns in the H-plane at various frequencies, which confirmed the simulation results.

Key words: UWB antenna, over wave range antenna, antenna array, power dividers, feeding system.

References

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For citation:

Kaloshin V.A., Le N.T. Research of a plane two dimensional over wave range antenna array with a feed system. Journal of Radio Electronics. 2020. No. 3. Available at http://jre.cplire.ru/jre/mar20/8/text.pdf.  DOI 10.30898/1684-1719.2020.3.8