D. Kholodnyak, E. Zameshaeva, V. Turgaliev, E. Vorobev
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引用次数: 0
Abstract
Advanced lumped-element immittance inverters supporting dual-frequency operation and tunability of operational frequencies are the key enablers to design small-size tunable dual-bandpass filters. The paper presents a design concept of tunable dual-frequency immittance inverters based on the dual-composite right/left-handed transmission line (D-CRLH TL) unit cells with variable capacitors. Tunability of such an immittance inverter is limited by a tolerable variation of the inverter parameter which changes when tuning the operational frequencies. At least ±10% tuning of the both operational frequencies is shown feasible theoretically and experimentally.
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