Analysis of Operational Amplifier Parameter Impact on Negative-Impedance Converter Characteristics
Abstract
The article deals with a low pass op-amp model with high gain at DC and a single-pole frequency response and presents a technique for simple analysis of negative inductance compensator (NIC) circuits. Analytical expressions are derived fo r NIC frequency response analysis in case of operational amplifier finite bandwidth. Besides, the ideal NIC circuit comparison results are provided. Calculations show that op-amp finite bandwidth has impact on NIC impedance at fre quencies 10 times lower than gain-bandwidth product. The obtained analytical results are in good agreement with experimental setup measurements of NIC implementation to electrically small antenna impedance matching.
About the Author
D. V. Belenko
Saint Petersburg Electrotechnical University "LETI"
Russian Federation
Russian Federation
Dipl.-engineer in radiophysics and electronics (2010, Taganrog Technological Institute of Southern Federal University), postgraduate student of the Department of Radio Electronic Equipment of Saint Petersburg Electrotechnical University "LETI". The author of 2 scientific publications. Area of expertise: radio equipment; microwave devices
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Review
For citations:
Belenko D.V. Analysis of Operational Amplifier Parameter Impact on Negative-Impedance Converter Characteristics. Journal of the Russian Universities. Radioelectronics. 2017;(5):36-41. (In Russ.)
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