For citations:
Golovkov A.A., Mozhaeva E.I. Limiting Characteristics for Receiving Small Size Frame Antenna Matching Using Converter Negative Impedance. Journal of the Russian Universities. Radioelectronics. 2018;(1):32-37. (In Russ.) https://doi.org/10.32603/1993-8985-2018-21-1-32-37