Electrically controllable microstrip microwave devices are investigated in which liquid crystals, high-temperature superconducting films, or varactors are used as active media. It is demonstrated that comparatively large controllable phase shifts can be obtained using resonant liquid crystal or varactor phase shifters; however, in this case, the working frequency band of the devices become significantly narrower. The possibilities of obtaining maximum frequency tuning of filters whose bandwidth in the tuning frequency range remains unchanged or changes by a preset law are demonstrated. Varactor designs of two-channel power dividers with a smoothly varying division coefficient between the channels are considered. An original device protecting from a radio pulse based on a superconducting film in which total pulse reflection is observed when the pulse power exceeds a preset threshold is investigated.
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 9, pp. 36–45, September, 2008.
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Belyaev, B.A., Leksikov, A.A., Serzhantov, A.M. et al. Physical principles of the design of electrically controllable microstrip devices. Russ Phys J 51, 919–929 (2008). https://doi.org/10.1007/s11182-009-9136-4
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DOI: https://doi.org/10.1007/s11182-009-9136-4