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Realizing wideband negative inductor using current feedback amplifier
Author(s) -
Xia Zhenxing,
Li Meiling,
Qi Zhu
Publication year - 2016
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.29896
Subject(s) - inductor , wideband , electrical impedance , amplifier , microwave , negative impedance converter , electronic engineering , control theory (sociology) , negative feedback , equivalent circuit , stability (learning theory) , engineering , topology (electrical circuits) , electrical engineering , computer science , voltage , telecommunications , cmos , boost converter , control (management) , artificial intelligence , machine learning
Firstly, a compact current feedback amplifier‐based negative impedance converter (CFA‐based NIC) was designed and its equivalent circuit was proposed. Secondly, to obtain a stable negative inductor, a stabilization network was developed and combined with the CFA‐based NIC. Meanwhile, the stability of the combined circuit was analyzed in detail in the time domain by the method of Routh–Hurwitz criterion (R–H criterion). Finally, the prototype of the designed CFA‐based NIC with stabilization network was fabricated. The measurement results had a good agreement with simulated results. The measurement results showed the negative inductivity of the input impedance over a wideband from 50 to 500 MHz. Especially, the equivalent inductor of the present circuit is −3.4 nH ± 10% from 200 to 500 MHz. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:1723–1728, 2016