Journal of Radio Electronics. eISSN 1684-1719. 2024. ¹12
Full text in Russian (pdf)
DOI: https://doi.org/10.30898/1684-1719.2024.12.10
DESIGN OF A COMPACT WIDEBAND ANTENNA
WITH A STABLE RADIATION PATTERN FOR APPLICATION
IN SMALL-SIZED UAVs
M.S. Shishkin
«AIRBURG» JSC
620063, Russia, Yekaterinburg, 8-marta str., 49, floor 3
The paper was received July 24, 2024.
Abstract. This paper presents a method to obtain a stable toroidal radiation pattern in a wide frequency range for a small-sized antenna based on a printed asymmetrical dipole. The method lies in the application of a broadband rectangular exciter (first arm) and matching it with a 50-Ohm input connector using a quarter-wave transformer based on microstrip transmission lines and a special form of a second arm. According to the proposed method, a printed antenna has been designed with two wide matching bands with reflection coefficient levels (module S11) of no more than minus 10 dB: 1677-2786 MHz (50%) and 3230-3801 MHz (16.2%). It forms a toroidal field in the frequency range of 1500-4000 MHz with a gain of at least 2 dBi in the direction of maximum radiation. The shape of the radiation pattern is quite stable over the entire frequency range; the maxima are polarized perpendicular to the antenna axis. The designed antenna was manufactured, and its characteristics were measured. This antenna is primarily applied to wireless communication systems for unmanned aerial systems and is intended to be installed on unmanned aerial vehicles to provide radio coverage in all azimuth directions. The manufactured antenna is compact (the antenna printed circuit board, without connector, is 63×22.5×1 mm3 or 0.35λmax×0.125λmax×0.006λmax); it is light (no more than 10 g including the connector), and its unique shape allows the antenna to be used without a dome, not reducing the aerodynamic properties of the vehicle.
Key words: wideband antenna, multi-band antenna, stable radiation pattern, UAVs antenna.
Financing: this work has carried out on the basis of initiative research financed by «AIRBURG» JSC
Corresponding author: Shishkin Mikhail Sergeevich, m.shishkin@air-burg.ru
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For citation:
Shishkin M.S. Design of a compact wideband antenna with a stable radiation pattern for application in small-sized UAVs. // Journal of Radio Electronics. – 2024. – ¹. 12. https://doi.org/10.30898/1684-1719.2024.12.10 (In Russian)