{"title":"Diode-Based Wideband Harmonic Generation for Future Nonlinear Sensing Applications","authors":"Thomas Micallef;Xiaoqiang Gu;Ke Wu","doi":"10.1109/TMTT.2025.3557189","DOIUrl":null,"url":null,"abstract":"An essential element in advancing next-generation RF systems and sensing applications through nonlinear sensing technology is the efficient production of harmonics at gigahertz (GHz) frequencies. This research offers a comprehensive theoretical and practical analysis of diode-based harmonic generators, specifically focusing on Schottky, varactor, and step recovery diodes. The study proposes time-domain current equations to predict harmonic amplitudes under various input voltages and biasing conditions, considering the distinctive resistive and capacitive nonlinearities of the diodes. The theoretical models are validated using fabricated prototypes, which demonstrate wideband harmonic production for a 1-GHz input signal with a frequency-modulated sweep spanning 600 MHz in total bandwidth. The measured average output power variation is ±3.4 dBm for SMS7630 and ±5.2 dBm for SMV1213. Beyond offering insights into impedance matching and design optimization, the results underscore the diodes’ suitability for low-power and batteryless applications. By providing a robust physical foundation for enhancing harmonic generation efficiency, this work aspires to drive the development of state-of-the-art RF systems and components.","PeriodicalId":13272,"journal":{"name":"IEEE Transactions on Microwave Theory and Techniques","volume":"73 9","pages":"6180-6191"},"PeriodicalIF":4.5000,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Transactions on Microwave Theory and Techniques","FirstCategoryId":"5","ListUrlMain":"https://ieeexplore.ieee.org/document/10969078/","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0
Abstract
An essential element in advancing next-generation RF systems and sensing applications through nonlinear sensing technology is the efficient production of harmonics at gigahertz (GHz) frequencies. This research offers a comprehensive theoretical and practical analysis of diode-based harmonic generators, specifically focusing on Schottky, varactor, and step recovery diodes. The study proposes time-domain current equations to predict harmonic amplitudes under various input voltages and biasing conditions, considering the distinctive resistive and capacitive nonlinearities of the diodes. The theoretical models are validated using fabricated prototypes, which demonstrate wideband harmonic production for a 1-GHz input signal with a frequency-modulated sweep spanning 600 MHz in total bandwidth. The measured average output power variation is ±3.4 dBm for SMS7630 and ±5.2 dBm for SMV1213. Beyond offering insights into impedance matching and design optimization, the results underscore the diodes’ suitability for low-power and batteryless applications. By providing a robust physical foundation for enhancing harmonic generation efficiency, this work aspires to drive the development of state-of-the-art RF systems and components.
期刊介绍:
The IEEE Transactions on Microwave Theory and Techniques focuses on that part of engineering and theory associated with microwave/millimeter-wave components, devices, circuits, and systems involving the generation, modulation, demodulation, control, transmission, and detection of microwave signals. This includes scientific, technical, and industrial, activities. Microwave theory and techniques relates to electromagnetic waves usually in the frequency region between a few MHz and a THz; other spectral regions and wave types are included within the scope of the Society whenever basic microwave theory and techniques can yield useful results. Generally, this occurs in the theory of wave propagation in structures with dimensions comparable to a wavelength, and in the related techniques for analysis and design.