Leaky-wave array antenna
V. A. Kaloshin1, C. T. Nguyen 2
1 Kotelnikov Institute of
Radioengineering and Electronics of Russian Academy of Sciences, Mokhovaya
11-7, Moscow 125009, Russia
2 Moscow Institute of Physics and Technology (State University), 9
Institutsky Per., Dolgoprudny, Moscow region 141700, Russia
The paper is received on January 14, 2019
Abstract. A phased array antenna with
one-dimensional phase scanning, containing two flat arrays of a hollow rectangular
leaky-wave waveguide with a translucent narrow wall, was proposed and
investigated. The translucent wall is made in the form of a lattice of
cylindrical conductors. Flat arrays are angled to each other and, at the
interface, are excited by a linear phased array of rectangular waveguides. To
realize an in-phase front with a uniform amplitude distribution, the lattice
period of cylindrical conductors increases, and the size of the wide wall of
the leaky-wave waveguide decreases in the direction of its propagation
according to the found law. Using numerical simulation based on the finite
element method, the dependences of the gain of the antenna array on the
frequency and scan angle are investigated. The
maximum value of the antenna array efficiency is more than 0.9, the frequency
band at the 0.7 efficiency level is more than 5%. The
maximum value of the antenna array efficiency is more about 0.9, the frequency
band at the 0.7 efficiency level is more than 5%. Scanning sector by the level
of the gain dropping - 3 dB is more 50 degrees.
Keywords:
phased array antenna, leaky-wave waveguide, numerical simulation.
References
1. Erio Gandini and others. SIW Slotted
Waveguide Array with Pillbox Transition for Mechanical Beam Scanning. IEEE
Antennas and Wireless Propagation Letters. 2012, Vol. 11. P. 1572-1575.
2.
V. A.
Kaloshin, E. V. Frolova
An imaging
system with frequency-phase scanning based on a waveguide-slotted array of the
leaky wave.
Zhurnal Radioelektroniki - Journal of Radio Electronics. 2018. No.
3. Available at
http://jre.cplire.ru/jre/mar18/3/text.pdf.
DOI
10.30898/1684-1719.2018.3.8 (In Russian)
3. R.C.Hansen. Microwave Scanning
Antennas. Vol. III: Array Systems. Academic Press. 1966. ISBN 0685231119, 9780685231111
4.
V. I.
Kalinichev, A. A. Babaskin. A method of calculating the leaky-wave
propagation constant in slotted waveguides.
Zhurnal
Radioelektroniki - Journal of Radio Electronics. 2015. No. 7. Availble
at
http:/jre.cplire.ru/jre/jul15/2/text.pdf.
(In Russian)
5. C. H. Walter. Traveling wave
antennas. NY.,
McGraw-Hill.1965.
ISBN-13: 978-0932146519,
ISBN-10: 0932146511
6.
V.A. Kaloshin, C.T. Nguyen. Leaky-wave antenna array. VI Vserossiyskaya Mikrovolovaya
Konferentsiya [VI All-Russian Microwave Conference]. Reports. Moscow, Kotelnikov
IRE RAS. 2018. (In Russian)
For citation:
V. A. Kaloshin, C. T. Nguyen.
Leaky-wave array antenna. Zhurnal
Radioelektroniki - Journal of Radio Electronics. 2019. No. 1. Available at
http://jre.cplire.ru/jre/jan19/14/text.pdf
DOI 10.30898/1684-1719.2019.1.14