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Author |
Codreanu, Iulian; Boreman, Glenn D. |
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Title |
Infrared microstrip dipole antennas |
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Journal Article |
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Year |
2001 |
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Microwave and Optical Technology Letters |
Abbreviated Journal |
Microw Opt Technol Lett |
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29 |
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6 |
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381-383 |
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Keywords |
optical antennas |
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Abstract |
Abstract 10.1002/mop.1184.abs We report on the successful use of niobium microbolometers coupled to microstrip dipole antennas for the detection of midinfrared radiation. Measurements of the detector response versus antenna length performed at the 10.6 μm wavelength allowed us to identify the first three current-wave resonances along the antenna arms. The detector response was also measured as a function of the radiation wavelength in the 911 μm spectral domain. Excellent agreement between the experimental results and finite-difference time-domain (FDTD) predictions was obtained. |
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RPLAB @ gujma @ |
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738 |
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Author |
Puscasu, Irina; Boreman, Glenn D. |
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Title |
Theoretical and experimental analysis of transmission and enchanced absorption of frequency selective surfaces in the infrared |
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Conference Article |
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2001 |
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Proc. SPIE |
Abbreviated Journal |
Proc. SPIE |
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Volume |
4293 |
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185-190 |
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optical antennas |
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A comparative study between theory and experiment is presented for transmission through lossy frequency selective surfaces (FSSs) on silicon in the 2 – 15 micrometer range. Important parameters controlling the resonance shape and location are identified: dipole length, spacing, impedance, and dielectric surroundings. Their separate influence is exhibited. The primary resonance mechanism of FSSs is the resonance of the individual metallic patches. There is no discernable resonance arising from a feed-coupled configuration. The real part of the element's impedance controls the minimum value of transmission, while scarcely affecting its location. Varying the imaginary part shifts the location of resonance, while only slightly changing the minimum value of transmission. With such fine-tuning, it is possible to make a good fit between theory and experiment near the dipole resonance on any sample. A fixed choice of impedance can provide a reasonable fit to all samples fabricated under the same conditions. The dielectric surroundings change the resonance wavelength of the FSS compared to its value in air. The presence of FSS on the substrate increases the absorptivity/emissivity of the surface in a resonant way. Such enhancement is shown for dipole and cross arrays at several wavelengths. |
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753 |
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ГОСТ 2.102-68. ЕСКД. Виды и комплектность конструкторских документов |
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2001 |
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gost, detproj |
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861 |
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ГОСТ 19.301-2000. ЕСКД. Программа и методика испытаний. Требования к содержанию, оформлению и контролю качества |
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2001 |
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ГОСТ Р 15.201-2000. Продукция производственно-технического назначения. Порядок разработки и постановки продукции на производство |
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2001 |
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876 |
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