Publication: Stability analysis and design of negative impedance converters: application to circuit and small antennas
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2016-09
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Radioengineering Society
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Abstract
Negative impedance converters (NICs) have been proposed as structures to improve the performance of RF circuits and electrically small antennas. However, NICs suffer from stability problems. This paper presents a compact procedure to analyze the stability of NICs. Then, the required and sufficient conditions to predict the stability of a negative impedance converter are given. These conditions can be evaluated using standard computer-aided design software. Finally, a NIC prototype is given to validate and illustrate the presented design procedure, it is also integrated with a printed, blade-type, electrically small monopole in the VHF band.
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Keywords
Negative impedance converter (NIC), Stability, Network nyquist test, Electrically small antennas
Bibliographic citation
Segovia-Vargas, D., Jiménez-Martín, J. L., Parra-Cerrada, Á., Albarracín-Vargas, F., Ugarte-Muñoz, E. & González-Posadas, V. (2016). Stability analysis and design of negative impedance converters: application to circuit and small antennas. Radioengineering, 25(3), 409-418.