Abstract. Results of a research of phase-frequency
scanning in the radio-objective representing the focused array of leaky wave waveguides
with variable distance between slots along waveguide are given. Scanning of a
focused radiation in a Fresnel zone of the array is carried out in two
directions: in the plane formed by the waveguide axis and the normal to the
array due to change of frequency and crosswise - due to change of a phase shift
between the next waveguides of the array. Emergence and positions of the
interference maxima of the array radiation are investigated. Comparison to scanning
characteristics of periodic arrays is carried out.
Keywords: leaky wave antenna, slotted waveguide
array, focusing in a Fresnel zone, phase-frequency scanning.
References
1.
Nepa P.
Near-Field Focused Antennas for Wireless Communications and Power Transfer International.
Spring School on “Electromagnetics and emerging technologies for pervasive
applications: Internet of Things, Health and Safety” 18th–20thApril, 2016,
Bologna, Italy. URL:
http://www.cost-ic1301.org/files/TS4_Bologna/2016_04_18_1630_Nepa.pdf.
2.
Gómez-Tornero
J. L., Goussetis G. Directing and Focusing Electromagnetic Waves using Leaky
and Travelling Wave concepts for Wireless Power Transmission. International
Summer School in Wireless Power Transmission for Space Applications 23-26 June
2014, Aveiro, Portugal. URL:
http://www.cost-ic1301.org/files/TS1_Aveiro/June_25_2014_1130_Tornero.pdf.
3.
Buffi,
Nepa P., Manara G. Design criteria for near-field-focused planar arrays, IEEE
Antennas Propag. Mag., 2012, vol. 54, no. 1, pp. 40–50.
4.
Gomez-Tornero
J. L., Quesada-Pereira F., Alvarez-Melcon A., Goussetis G., Weily A. R., and
Guo Y. J. Frequency Steerable Two Dimensional Focusing Using Rectilinear
Leaky-Wave Lenses. IEEE Transactions on Antennas and Propagation,
2011, Vol. 59,
Issue: 2,
pp. 407-415.
DOI: 10.1109/TAP.2010.2096396
5.
S. E.
Bankov, Kaloshin V. A.,
Frolova E. V. Synthesis and
Analysis of a Frequency Scanned Planar Waveguide Array Focused in the Fresnel Zone.
Journal of Communications Technology and Electronics,
2016, Vol. 61, No. 6,
DOI:
10.1134/S1064226916060036.
6.
Bankov
S. E., Kalinichev V. I., Kaloshin V. A., Frolova E. V. "Non-periodic
linear and planar leaky-wave antenna arrays". Trudy 3 Vserossiiskoi
Mikrovolnovoi konferentsii Radiolokatsiya i radiosvyaz [Proc. of 3-d
All-Russian Microwave Conference “Radar and radio communications”]. Moscow, Kotel’nikov
IRE of RAS, 25-27 Nov 2015, pp. 207-211. (In Russian).
7.
Kalinichev
V. I., Babaskin A. A. Study of the frequency scanning for a slotted-waveguide
antenna array with a constant phase shift between the waveguides.
Zhurnal Radioelektroniki - Journal of Radio Electronics, 2017, No. 1.
Available at
http://jre.cplire.ru/jre/jan17/7/text.pdf. (In Russian).