J. Budhu, A. Grbic, N. Pfiester, C. Ball, K. Choi, S. Krishna
{"title":"Dielectric Resonator Antenna Coupled Infrared Antimonide Photodetectors","authors":"J. Budhu, A. Grbic, N. Pfiester, C. Ball, K. Choi, S. Krishna","doi":"10.1109/IEEECONF35879.2020.9329773","DOIUrl":null,"url":null,"abstract":"A Dielectric Resonator Antenna Coupled Infrared Antimonide Photodetector (DRACAD) is presented. The large capture area of the DRA feeds incident radiation to the subwavelength dimension detector. The reduced dimension of the detector reduces the Noise Equivalent Power (NEP). The large capture area of the DRA increases the captured signal. The combination leads to high Signal-to-Noise Ratios (SNR). The DRACAD is designed using a Genetic Algorithm Optimization to obtain dimensions which maximize the absorbed infrared radiation with the smallest possible detector. The plasmonic metals are modeled as effective lossy sheet impedances. Absorption spectrum simulations between $8-12\\mu m$ wavelengths show the DRACAD absorbs nearly 73% of the incident light at $9\\mu m$ after all metal losses are accounted for.","PeriodicalId":135770,"journal":{"name":"2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2020-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/IEEECONF35879.2020.9329773","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 2
Abstract
A Dielectric Resonator Antenna Coupled Infrared Antimonide Photodetector (DRACAD) is presented. The large capture area of the DRA feeds incident radiation to the subwavelength dimension detector. The reduced dimension of the detector reduces the Noise Equivalent Power (NEP). The large capture area of the DRA increases the captured signal. The combination leads to high Signal-to-Noise Ratios (SNR). The DRACAD is designed using a Genetic Algorithm Optimization to obtain dimensions which maximize the absorbed infrared radiation with the smallest possible detector. The plasmonic metals are modeled as effective lossy sheet impedances. Absorption spectrum simulations between $8-12\mu m$ wavelengths show the DRACAD absorbs nearly 73% of the incident light at $9\mu m$ after all metal losses are accounted for.
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