Next Article in Journal
The Improvement Switching Technique for High Step-Up DC-DC Boost Converter
Next Article in Special Issue
Mutual Coupling Reduction between Finite Spaced Planar Antenna Elements Using Modified Ground Structure
Previous Article in Journal
Building an Energy-Efficient Ad-Hoc Network for Wildlife Observation
Previous Article in Special Issue
Joint Design and Performance Analysis of a Full-Duplex UAV Legitimate Surveillance System
Open AccessFeature PaperArticle

Beam-Reconfigurable Multi-Antenna System with Beam-Combining Technology for UAV-to-Everything Communications

Department of Electronic Engineering/Engineering Research Institute (ERI), Gyeongsang National University (GNU), 501, Jinju-daero, Jinju-si, Gyeongsangnam-do 52828, Korea
*
Author to whom correspondence should be addressed.
Electronics 2020, 9(6), 980; https://doi.org/10.3390/electronics9060980
Received: 18 May 2020 / Revised: 8 June 2020 / Accepted: 10 June 2020 / Published: 12 June 2020
(This article belongs to the Special Issue RF/Microwave Antenna, Circuit, and System Design for UAV Applications)
This paper proposes a beam-reconfigurable antenna for unmanned aerial vehicles (UAVs) with wide beam coverage by applying beam-combining technology to multiple antennas with different beam patterns. The proposed multi-antenna system consists of a circular patch antenna and a low-profile printed meandered monopole antenna. For beam combining, a coplanar waveguide with ground (CPW-G) structure feeding network is proposed, and it consists of two input ports, a 90° hybrid coupler, a microstrip 90° phase delay line, and a single-pole double-throw (SPDT) switch. It performs the role of power distribution and phase adjustment, and synthesizes the broad-side beam of the monopole antenna and the end-fire beam of the patch antenna to form the directive broadside beams in four different directions. The proposed antenna system operates at 5–5.5 GHz which covers both UAV ground control frequencies (5.03–5.09 GHz) and UAV mission frequencies (5.091–5.150 GHz). The peak gain, total efficiency, and half-power beamwidth (HPBW) of the antenna system are approximately 5.8 dBi, 76%, 145° in the elevation plane, and 360° in the azimuth plane respectively. Its electrical size and weight are λ 0 × λ 0 × 0.21 λ 0 at 5.09 GHz and 19.2 g, respectively. View Full-Text
Keywords: antennas; antenna arrays; beam-combining; beam-reconfigurable; multi-antenna system; UAV antenna; UAV to everything; wide coverage antennas; antenna arrays; beam-combining; beam-reconfigurable; multi-antenna system; UAV antenna; UAV to everything; wide coverage
Show Figures

Figure 1

MDPI and ACS Style

Choi, Y.-S.; Park, J.-S.; Lee, W.-S. Beam-Reconfigurable Multi-Antenna System with Beam-Combining Technology for UAV-to-Everything Communications. Electronics 2020, 9, 980. https://doi.org/10.3390/electronics9060980

AMA Style

Choi Y-S, Park J-S, Lee W-S. Beam-Reconfigurable Multi-Antenna System with Beam-Combining Technology for UAV-to-Everything Communications. Electronics. 2020; 9(6):980. https://doi.org/10.3390/electronics9060980

Chicago/Turabian Style

Choi, Yu-Seong; Park, Jeong-Su; Lee, Wang-Sang. 2020. "Beam-Reconfigurable Multi-Antenna System with Beam-Combining Technology for UAV-to-Everything Communications" Electronics 9, no. 6: 980. https://doi.org/10.3390/electronics9060980

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop