| Autor: |
F. Anisimovas, Oleg Kiprijanovič, L. Dapkus, Bonifacas Vengalis, K. Šlapikas, Jonas Gradauskas, I. Prosyčevas, Judita Puišo, Steponas Ašmontas |
| Rok vydání: |
2009 |
| Předmět: |
|
| Zdroj: |
Lithuanian Journal of Physics. 49:29-34 |
| ISSN: |
1648-8504 |
| DOI: |
10.3952/lithjphys.49105 |
| Popis: |
) antennas fastened to an end of a transmission line were pulse-excited by 0.5 ns rise time pulsesfor radiation of ultra-wideband signals. Wideband horn antennas were used for receiving the signals and wideband samplingoscilloscope was used for their visualization. The signals were registered in 1Œ5.6 GHz frequency range and had the quasi-Gauss envelope form. The plane antennas made of Cu, resistive Al, and resistive nanostructured Ni thin lms on supportingpolyethylene terephthalate of 100 „m thickness were used. It is shown that the radiation induced by pulsed excitation canbe used to control parameters of resistive coatings, including nanostructured ones, during a deposition process. The metallicnanostructured thin lms could be used to create plane radiating and receiving antennas having resistive elements and adaptedfor ultra-wideband signals. Ultra-wideband antennas with resistive nanostructured coatings, which have properties that canbe changed by external electric or magnetic elds or by optical radiation, can be used for modulation of radiated pulses.Further experimental studies are proposed to elaborate metallic nanostructured thin lms suitable to withstand possible damagesinduced by short high power electrical pulses. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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