Journal
ELECTRONICS
Volume 10, Issue 19, Pages -Publisher
MDPI
DOI: 10.3390/electronics10192430
Keywords
deep learning (DL); machine learning (ML); microstrip meander line slow wave structure (MML-SWS); D-band
Categories
Funding
- National Natural Science Foundation of China [61871110]
- Southeast University
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A new machine learning deep learning synthesis algorithm is proposed for the design of a microstrip meander line slow wave structure, achieving low training error with exact numerical simulation data, obtaining feasible geometry parameters when desired performance is reached, and successfully designing a D-band MML SWS with a 20 GHz bandwidth.
We present a new machine learning (ML) deep learning (DL) synthesis algorithm for the design of a microstrip meander line (MML) slow wave structure (SWS). Exact numerical simulation data are used in the training of our network as a form of supervised learning. The learning results show that the training mean squared error is as low as 5.23 x 10(-2) when using 900 sets of data. When the desired performance is reached, workable geometry parameters can be obtained by this algorithm. A D-band MML SWS with 20 GHz bandwidth at 160 GHz center frequency is then designed using the auto-design neural network (ADNN). A cold test shows that its phase velocity varies by 0.005 c, and the transmission rate of a 50-period SWS is greater than -5 dB with the reflectivity below -15 dB when the frequency is from 150 to 170 GHz. Particle-in-cell (PIC) simulation also illustrates that a maximum power of 3.2 W is reached at 160 GHz with 34.66 dB gain and output power greater than 1 W from 152 to 168 GHz.
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