Ultra-wide band antenna attachable on UAV surface

Abstract

In the present study, ultra‐wide band antenna attachable on unmanned aerial vehicle (UAV) surfaces usable as signal detection antenna in various bands was designed, and the practicality of the developed antenna was verified by attaching the antenna to a UAV and measuring the performance. The antenna suggested in this article was manufactured by forming a hemispheric conductor having the shape of a baseball seam on the ground and satisfying a self‐complementary through an image theory. This Hemispheric shape can reduce a drag and risk of breakage. The diameter of the antenna is 400 mm (0.4λL and λL is 0.3 GHz.), the height is 200 mm (0.2λL), and the ground size is 800 mm (0.8λL) × 800 mm (0.8λL). The designed antenna showed an ultra‐wide band property as it was matched to a band from 300 MHz to 10 GHz. After being attached to the bottom of a 7.3:1 scale UAV, the antenna showed matching properties from 1.85 to 10 GHz above and maintained a monopole pattern in all directions and in a bandwidth. To author's knowledge, the antenna was proper to using as a signal detection antenna which need wide bandwidth, conical pattern, drag reduction and reduced risk of breakage.

Design of a 3D Top-Loaded Low-Profile Sleeve Antenna for UAV Applications

“…For the two bands, the antenna was designed to have omnidirectional and quasi-omnidirectional radiation characteristics, respectively. A hemispheric conductor seamed on a 0.8 × 0.8λ 2 ground for Ultra wideband UAV applications is reported in [11]. While in [12], higher-order mode circular patch antenna operating in the frequency range of 674-719MHz was proposed.…”

Modified wideband monopole antenna for unmanned aerial vehicle communication

“…The studies for UAV antenna have been reported in some literature. [1][2][3][4][5][6][7] Although there can be some criteria in grouping the antenna for UAV, the antenna types in those articles can be categorized into two groups, namely bladetype group and surface-mounted type group.…”

“…Good aerodynamic characteristics can be expected and beam-steering is possible by arraying, but the bandwidth is narrow, a control circuit is required for beam-steering and the space inside the wings for antenna array formation and feeding cannot be acquired easily. Other articles [5][6][7] show the surface-mount type antennas or conformal type antennas.…”