Title :
Low-profile and horizontally-polarised antenna for UAV applications
Author :
Sun, B.-H. ; Wei, Y.-F. ; Zhou, Shi-Gang ; Liu, Q.-Z.
Author_Institution :
Nat. Key Lab. of Antennas & Microwave Technol., Xidian Univ., Xi´an, China
Abstract :
A low-profile antenna, with horizontally-polarised radiation similar to a dipole antenna with a reflector in proximity, is presented for application in unmanned aerial vehicles (UAVs). The antenna has a simple structure comprising two folded strips (a radiating strip and a feeding strip). Resonance and impedance matching is achieved by adjusting the capacitive loads located at the ends of the radiating strip and adjusting the coupling of the feeding strip to the radiating strip. A prototype with height of 30 mm (0.05 ) and a lateral size of 160 50 mm2 (0.27times0.083 times2) is implemented, which shows that an impedance bandwidth of 11 MHz (500 511 MHz) within 2.0:1 VSWR and good radiation performance are obtained.
Keywords :
electromagnetic wave polarisation; impedance matching; mobile antennas; reflector antenna feeds; remotely operated vehicles; space vehicle antennas; UAV; VSWR; bandwidth 11 MHz; dipole antenna; folded strip; horizontally-polarised antenna; impedance matching; low-profile antenna; radiating strip; reflector; resonance matching; unmanned aerial vehicle;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2009.2218
