Challenges in Design of Power-amplifying Active Metasurfaces (CROSBI ID 692934)
Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Lončar, Josip ; Šipuš, Zvonimir
engleski
Challenges in Design of Power-amplifying Active Metasurfaces
The basic methodology in designing a transmissive or reflective power-amplifying metasurface is explained. Ensuring stability is recognized as the greatest challenge in the design. Whenever standard two-port amplifiers are used for power amplification, the stability is ensured by minimizing the input-output coupling, which inevitably leads to polarization selection, polarization conversion and nonreciprocal response of reflective metasurfaces. If these effects are not desirable, reflection amplifiers may be used. Reflection amplifiers based on negative- impedance converters employ a positive and a negative feedback loop to generate negative resistance required for power amplification, which makes them even more prone to instability. Their stability depends directly on the impedance of the radiating element. A reliable approach to stability analysis of reflection amplifiers based on negative- impedance converters is not yet available.
Metasurfaces ; Power amplification ; Stability ; Negative-impedance converter ; Reflection amplifier
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Podaci o prilogu
9-12.
2020.
objavljeno
Podaci o matičnoj publikaciji
Proceedings of ELMAR-2020
Muštra, Mario ; Vuković, Josip ; Zovko-Cihlar, Branka
Zagreb: Hrvatsko društvo Elektronika u pomorstvu (ELMAR)
978-1-7281-5973-7
Podaci o skupu
62nd International Symposium ELMAR-2020
predavanje
14.09.2020-15.09.2020
Zadar, Hrvatska