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Aircraft Cavity-Backed Nonprotruding Wideband Antenna

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2 Author(s)
Rufail, L. ; Electr. Eng. Dept., Ecole Polytech., Montreal, QC, Canada ; Laurin, J.

A novel circular aperture antenna is presented. The proposed nonprotruding antenna is composed of a cylindrical cavity embedding an inverted hat antenna whose profile is defined by three elliptical segments. This profile can be used to control and shape the return loss response over a wide frequency band (31% at -15 dB). The present design combines the benefits of a low-profile antenna and the broad bandwidth of the inverted hat monopole. A parametric analysis of the antenna is conducted. Omnidirectional monopole-like radiation pattern and vertical polarization are also verified with measurements and simulations. This antenna constitutes a low drag candidate for a distance measurement equipment (DME) aircraft navigation system.

Published in:

Antennas and Wireless Propagation Letters, IEEE  (Volume:11 )