研究目的
To design a Double Corrugated Waveguide (DCW) as a slow wave structure for a novel D-band Traveling Wave Tube (TWT) for wireless communications, aiming to exploit the D-band (141 – 148.5 GHz) and the G-band (275 – 305 GHz) for creating a very high capacity layer.
研究成果
The design and performance of a two section D-band TWT have been discussed, with the Double Corrugated Waveguide designed to provide output power suitable for long wireless communication links. The simple structure of the DCW assures a relatively low cost TWT, and the fabrication of the TWT is in progress.
研究不足
The major challenge is the control of fabrication tolerance and assuring a level of accuracy suitable for the required performance, particularly for the electron gun and the slow wave structure (SWS). A fabrication tolerance of 5 microns has been found satisfactory for the specific frequency range.
1：Experimental Design and Method Selection:
The design involves optimizing the dimensions of the DCW to assure proper synchronism over the operating frequency band, using CST - Eigenmode solver for dispersion curve computation.
2：Sample Selection and Data Sources:
The study focuses on the D-band (141 –
3：5 GHz) and the G-band (275 – 305 GHz) for wireless communications. List of Experimental Equipment and Materials:
1 The design utilizes a Double Corrugated Waveguide (DCW) as the slow wave structure (SWS).
4：Experimental Procedures and Operational Workflow:
The process includes sensitivity analysis to assess fabrication tolerance, simulation of S-parameters of a complete DCW slow wave structure, and large signal analysis using Particle in Cell (PIC) simulations.
5：Data Analysis Methods:
The analysis involves evaluating the dispersion and interaction impedance as a function of period variation, and assessing gain and output power through PIC simulations.
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