Reconfigurable graphene antenna for a network cognitive radio: A novel solution for X-band satellite communications

TALEB, Rahma Djaouda; BABA-AHMED, Mohammed Zakarya; RABAH, Mohammed Amin

doi:10.1016/j.asr.2024.02.007

Cited by 2 publications

(1 citation statement)

References 26 publications

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“…However, these actuators usually require additional energy to maintain the desired spatial distribution, and their low reliability and high complexity make the application challenging, especially under harsh conditions. Recently, novel materials have been introduced in the field of antenna design, including liquid dielectric materials [16], graphene [17], and bistable composite materials [18][19][20][21][22][23][24]. Among these, bistable composite laminates have drawn considerable attention in reconfigurable antenna design.…”

Section: Introductionmentioning

confidence: 99%

Pattern reconfigurable antenna with specified main lobe deflection and stable bandwidth by using bistable composite laminates

Zhang,

Tong,

et al. 2024

Smart Mater. Struct.

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Pattern reconfiguration of antennas has become a very important measure to improve the signal gain and working bandwidth by manipulating beam direction. Developing rational methods to find the reconfigurable structure is a key problem. In this paper, a collaborative optimization method is proposed to comprehensively consider both the geometric parameters of the bistable substrate and the size of the radiation patch. This method enables the design of a pattern reconfigurable antenna with specified main lobe deflection and stable bandwidth. Specifically, by using a two-step process, the log-periodic dipole antenna (LPDA) is conformally mapped from the planar substrate to the bistable substrate. Further investigation reveals that the main lobe deflection angle and bandwidth stability are influenced by the geometric parameters of the bistable substrate and the size of radiation dipoles, respectively. Thus, these parameters are selected as design variables for solving the proposed collaborative optimization model. The transformation between two stable configurations enables the proposed LPDA to deflect the main lobe of the H-plane pattern by 30° while maintaining consistency in the E-plane patterns. Importantly, the resonant frequencies remain unaffected and the bandwidth does not decrease during the pattern reconfiguration. Notably, the pattern reconfigurable mechanism is rooted in that the transformation between the two stable configurations alters the number and position of the dipoles in the radiation region and their current path, thereby changing the radiation direction of electromagnetic waves. The proposed collaborative optimization method has a potential application for other types of antennas and offers opportunities for various applications in the field of wireless communication.

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Section: Introductionmentioning

confidence: 99%

Pattern reconfigurable antenna with specified main lobe deflection and stable bandwidth by using bistable composite laminates

Zhang,

Tong,

et al. 2024

Smart Mater. Struct.

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Low-cost saw/sinus-tooth-shaped circular microstrip patch antenna for in-space and satellite applications

Avşar Aydin,

Akbiyik

2024

Phys. Scr.

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Antennas operating in S and C bands are crucial in space satellite applications due to their high bandwidth, which facilitates the swift transmission of large data volumes from space vehicles to Earth. These bands are less affected by atmospheric disturbances and exhibit lower noise levels, ensuring uninterrupted and reliable communication between spacecraft and Earth centers. They are essential for satellite-based remote sensing, analyzing surface properties, transmitting high-resolution images, scientific data, and other information. Additionally, they are used for spacecraft control and navigation, enabling precise mission operations. This study emphasizes user-friendly production antennas with different geometries and distinct feeding techniques, demonstrating various design implementations using CST Microwave Studio software. Innovative manufacturing methods such as 3D printing PLA substrates and using copper tape for antenna elements were explored to optimize costs and production processes. Precise cutting of antenna radiation geometries was achieved using the Cricut machine. Experimental validation through reflection coefficient (S11) measurements with a handheld vector network analyzer confirmed the practical application of theoretical foundations. The study’s novelty lies in examining unconventional materials like PLA filament for antenna substrates, exploring fractalization theory for enhancing bandwidth, and discussing advancements in material science with flexible filaments like TPU. These contributions offer insights into user-friendly antenna production, innovative manufacturing techniques, and theoretical explorations in antenna design, enhancing the efficiency and effectiveness of space satellite communication systems.

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Reconfigurable graphene antenna for a network cognitive radio: A novel solution for X-band satellite communications

Cited by 2 publications

References 26 publications

Pattern reconfigurable antenna with specified main lobe deflection and stable bandwidth by using bistable composite laminates

Pattern reconfigurable antenna with specified main lobe deflection and stable bandwidth by using bistable composite laminates

Low-cost saw/sinus-tooth-shaped circular microstrip patch antenna for in-space and satellite applications

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