#ANTENNA REGULAR FONT FREE PATCH#
#ANTENNA REGULAR FONT FREE FREE#

Planar antennas have gain special attention for the small satellite communication system, owing to their low profile and ease of fabrication 4, 5, 6. However, this type of antenna has a frequency shifting issue due to a non-infinite ground plane and the effect of a metallic satellite body.

#ANTENNA REGULAR FONT FREE PATCH#

In contrast to the deployable antenna, non-deployable antennas like, patch antennas provide a modest solution to this issue with better mission reliability. But the mechanical deployment of this type of antenna is stimulating, and which might be increased the chance of mission failure 2, 3. The adverse fact of this type of antenna is that they require different deployment mechanism. Monopole, dipoles, Yagi-Uda arrays and helical antennas are different types of wire antennas, which are typically placed on the outer face of the small satellite structure to facilitate space for other electronic components.

Wire antennas are widely used a deployable antenna in small satellites at high frequency (HF), VHF, and UHF applications. Both types of antennas have been developed by considering the size and weight of the Cube satellite, which are the most vital factors that have a profound influence on antenna type and design 1. Over the last decade, several types of antennas have been developed for the small satellite communication system, which can be summarized in two categories: deployable antenna and non-deployable antenna. Mutual coupling between the antenna and other components that can degrade antenna performances is one of the key challenges of the small satellite antenna. Maintaining good performance with specific Cube satellite requirements represent a major mechanical and RF challenge. However, inherently inverse proportionality between antenna performance and size is the big challenge to design Cube satellite antenna. The development of a low profile with efficient antenna performance is highly desirable for the Cube Satellite communication system. The antenna is a crucial element of the satellite communication system. The cubic structure encompasses an enclosed aluminum box with solar cells fitted to the outside walls. Cube satellites are tiny cube-shaped small satellites with Unit (U) dimensions of 10вЂ‰Г—вЂ‰10вЂ‰Г—вЂ‰10 cm 3 and a mass less than 1.33 kg per U. Small antenna volume with trade-off between the antenna size and performance are the key advantages of the proposed design, as the antenna occupies only 80вЂ‰Г—вЂ‰40вЂ‰Г—вЂ‰3.35 mm 3 space of the 2U Cube Satellite body structure and the geometrical parameters can be designed to provide the best performance between 449 and 468.5 MHz.Д¬ube satellite missions have increased dramatically in both research and commercial sectors due to economic affordability and short building period.

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Besides, the antenna communication performance has been verified using 2U Cube Satellite free space path loss investigation. The designed antenna impedance stability characteristic has been explored after integration with the 2U Cube Satellite body layout. The fabricated antenna can operate within the lower UHF frequency band of 443.5вЂ“455 MHz. The NZIM array layer has been utilized to minimize the coupling effect with Cube Satellite structure and improve the frequency stability with enhanced antenna gain and efficiency.

The proposed antenna consists of two layers, one is two different width meander line antenna patch with partial ground plane and another layer is 3вЂ‰Г—вЂ‰2 near-zero-indexed metamaterial (NZIM) metamaterial array structure with ground plane.

This research article presents a design and performance analysis of a metamaterial inspired ultra-high frequency (UHF) compact planar patch antenna for the CubeSat communication system that could be smoothly integrated with commercially available 2U Cube Satellite structure and onboard subsystem.

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