Abstract
A design of a blade antenna embedded in low-cost dielectric substrate (FR4) and operating at 4.97 GHz is the subject of this paper. The antenna design is accomplished using parametric analysis in the HFSS TM software, where the antenna dimensions are changed and it is observed how the changes affect figures-of-merit like input impedance, reflection coefficient and radiation patterns. The antenna prototype is presented, as well as, a comparison between experimental and theoretical results.
Highlights
One of the most installed antenna on aircraft is the monopole [1]
The blade antenna is classified as wide bandwidth planar monopole and presents aerodynamic features for aeronautic application [1]
Antennas on aircraft are exposed to climate variations, that creates a need to protect the radiator element with some structure less interfering in the electromagnetic waves [4]
Summary
One of the most installed antenna on aircraft is the monopole [1]. cylindrical monopoles are easy to manufacture, they have narrow bandwidth [2], whereas planar monopoles provide more bandwidth and emerge as option to overcome the cylindrical monopole limitation [3]. Antennas on aircraft are exposed to climate variations, that creates a need to protect the radiator element with some structure less interfering in the electromagnetic waves [4] Considering that radiator element geometry can be designed in different shapes, the use of a radome impedes to figure out what is the exact radiator geometry It is a designer responsibility uses predefine topologies as starting point for a blade design. Conduct the prototype measurements, where the electrical length of an airframe radius it was represented on the metallic cylinder radius. It was possible design a blade antenna operating at 4.97 GHz (4.38 - 5.56 GHz). It will be presented the antenna geometry, parametric studies and the prototype with its theoretical and experimental results
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