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Carbon Nano Tubes: Synthesis and Characterization for Microwave Applications

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Abstract

Attenuators are used to suppress the reflections in the helix traveling wave tubes and these attenuators are normally fabricated with the coating of some lossy material on the helix support rods. Carbon is the most commonly used attenuator material for the microwave applications and is usually deposited by pyrolytic or sputtering methods. However, other materials like iron and nickel are also used sometime for the attenuation applications. Helix is usually supported by the rods of some ceramic material like APBN (Anisotropic Pyrolytically Deposited Boron Nitride) or Alumina etc. Attenuator materials are deposited on these support rods to absorb the reflections. In order to look forward to new methods of deposition as well new attenuator materials, Carbon nanotubes have been proposed as another alternative attenuator material. Multi-Wall Cabon Nano-Tubes have been grown on the rectangular alumina substrate using the chemical vapour deposition method. Microwave attenuation/loss has been measured on these samples with X-band microwave frequencies. Specific experimental set-up has been designed for the measurement. The work is centered toward making good quality novel attenuators for the microwave applications and particularly the TWT.

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  1. Chaudhary Bansi Lal University, Bhiwani, Haryana, 127021, India

    Vikas Kumar

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  1. Vikas Kumar
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Kumar, V. Carbon Nano Tubes: Synthesis and Characterization for Microwave Applications. Trans. Electr. Electron. Mater. 22, 515–518 (2021). https://doi.org/10.1007/s42341-020-00260-6

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  • DOI: https://doi.org/10.1007/s42341-020-00260-6

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