{"title":"Generalized Analysis of Output-Power Limitations of Resonant-Tunnelling-Diode Oscillators With Symmetrical Slot Antennas","authors":"Gabriele Picco;Petr Ourednik;Dinh Tuan Nguyen;Michael Feiginov","doi":"10.1109/TTHZ.2024.3435464","DOIUrl":null,"url":null,"abstract":"In this article, we present optimization results for the symmetrical-slot-antenna resonant-tunnelling-diode (RTD) oscillators with account of relevant antenna losses and RTD parasitics. The results are in good agreement with available experimental data. The frequency roll-off of the output power has a complicated dependence on the oscillator parameters and does not exhibit a distinct dominant mechanism responsible for it. However, the roll-off is much steeper for lower-current-density RTDs, with much better performance of high-current-density RTDs not only at terahertz (THz) but also at sub-THz frequencies. The required minimum RTD-mesa area for optimized oscillators remains in an acceptable range for common fabrication technology: \n<inline-formula><tex-math>$\\approx 0.1\\text{--}0.2\\,\\mu\\text {m}^{2}$</tex-math></inline-formula>\n.","PeriodicalId":13258,"journal":{"name":"IEEE Transactions on Terahertz Science and Technology","volume":"14 5","pages":"621-631"},"PeriodicalIF":3.9000,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10614880","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Transactions on Terahertz Science and Technology","FirstCategoryId":"5","ListUrlMain":"https://ieeexplore.ieee.org/document/10614880/","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
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Abstract
In this article, we present optimization results for the symmetrical-slot-antenna resonant-tunnelling-diode (RTD) oscillators with account of relevant antenna losses and RTD parasitics. The results are in good agreement with available experimental data. The frequency roll-off of the output power has a complicated dependence on the oscillator parameters and does not exhibit a distinct dominant mechanism responsible for it. However, the roll-off is much steeper for lower-current-density RTDs, with much better performance of high-current-density RTDs not only at terahertz (THz) but also at sub-THz frequencies. The required minimum RTD-mesa area for optimized oscillators remains in an acceptable range for common fabrication technology:
$\approx 0.1\text{--}0.2\,\mu\text {m}^{2}$
.
期刊介绍：
IEEE Transactions on Terahertz Science and Technology focuses on original research on Terahertz theory, techniques, and applications as they relate to components, devices, circuits, and systems involving the generation, transmission, and detection of Terahertz waves.
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