Circularly-polarized, wide-range coverage azimuth and elevation angles microstrip antenna for RF harvesting

Joint Authors

al-Mizan, Haydar
Alawi, Taha A.
Abd al-Husayn, Zayd Asad

Source

Journal of Engineering and Sustainable Development

Publisher

al-Mustansyriah University College of Engineering

Publication Date

2020-12-31

Country of Publication

Iraq

No. of Pages

8

Main Subjects

Electronic engineering

Topics

• Nuclear physics
• Harvesting
• Microstrip antennas
• Polarization

English Abstract

Antenna design considerations of RF harvesting must balance between three conflicted points which are: antenna gain, antenna polarization and antenna coverage angles to reap RF energy.

In this paper, a circularly-polarized, wide-range coverage azimuth φ and elevation θ angles rectangular microstrip antenna for RF harvesting is proposed.

Circular polarization is achieved by forming 2 diagonal truncated-edges and 4 orthogonal etched-slots in the microstrip patch.

A parametric study is conducted to indicate the performance of antenna circular polarization with changing truncations and slots dimensions.

A second parametric study of ground-substrate area effects on the antenna gain shows the ability to control azimuth and elevation angles.

This technique is employed to widen the range of coverage antenna angles to the desire specifications.

A modelling via curve fitting is made for antenna gain versus ground-substrate area using polynomial function of second degree.

The proposed antenna ground-substrate area is adjusted to reach the maximum coverage anglers within parametric study boundaries.

The proposed antenna ground-substrate area is 280 mm × 280 mm with coverage anglers are ranged (-42° to +42°) for azimuth angle φ and (-68.5° to +68.5°) for elevation angle θ while antenna gain is almost 1.33 dBi.

Finally, the proposed antenna is fabricated and tested.

The simulated and measured results are matched Antenna design considerations of RF harvesting must balance between three conflicted points which are: antenna gain, antenna polarization and antenna coverage angles to reap RF energy.

In this paper, a circularly-polarized, wide-range coverage azimuth φ and elevation θ angles rectangular microstrip antenna for RF harvesting is proposed.

Circular polarization is achieved by forming 2 diagonal truncated-edges and 4 orthogonal etched-slots in the microstrip patch.

A parametric study is conducted to indicate the performance of antenna circular polarization with changing truncations and slots dimensions.

A second parametric study of ground-substrate area effects on the antenna gain shows the ability to control azimuth and elevation angles.

This technique is employed to widen the range of coverage antenna angles to the desire specifications.

A modelling via curve fitting is made for antenna gain versus ground-substrate area using polynomial function of second degree.

The proposed antenna ground-substrate area is adjusted to reach the maximum coverage anglers within parametric study boundaries.

The proposed antenna ground-substrate area is 280 mm × 280 mm with coverage anglers are ranged (-42° to +42°) for azimuth angle φ and (-68.5° to +68.5°) for elevation angle θ while antenna gain is almost 1.33 dBi.

Finally, the proposed antenna is fabricated and tested.

The simulated and measured results are matched excellently.

Data Type

Conference Papers

Record ID

BIM-1263612

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