Abstract
This study demonstrates the operation of a miniaturized version of a helical antenna array. Axial mode helical antenna was designed with a magnetic film glass composite core. The usual axial mode air core antennas are usually bulky and consume unnecessary space in the applications. This is overcome by the magnetic film core antenna which is basically smaller compared to the traditional mode. This magnetic film antenna has been designed to operate at a frequency of 2.44 GHz. This version has shown 80% reduction in volume compared to the conventional air-core antenna. This particular antenna is used as 2×2 and 4×4 arrays which show a three-fold gain over the single antenna. Therefore, we have achieved high gain along with the miniaturization of the antenna by using the glass core.
Highlights
UAV applications need highly reliable data transmission in the form of audio or video
The designed antenna array was tested by using the High frequency Simulation Software in order to determine and compare the return loss and gain with the practical results
The blue curve gives the simulated return loss while the green curve gives the practical return loss of less than -25 dB which is in close proximity to the fabricated return loss of -21 dB
Summary
UAV applications need highly reliable data transmission in the form of audio or video. The basic principle of research is to obtain a miniaturized (Bae et al, 2010) helical antenna which can be used for mobile applications and provide a significant gain. The helical antenna has two modes of operation-normal and axial mode. The conventional helical antennas operate in normal mode and are very bulky, so miniaturized version is needed.
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