Limitation of Negative Impedance Converter using Operational Amplifier for matching electrically small antenna

Please use this identifier to cite or link to this item: https://doi.org/10.1109/APS.2013.6711639

Title:	Limitation of Negative Impedance Converter using Operational Amplifier for matching electrically small antenna
Authors:	Shen, Y. Chio, T.-H.
Issue Date:	2013
Citation:	Shen, Y.,Chio, T.-H. (2013). Limitation of Negative Impedance Converter using Operational Amplifier for matching electrically small antenna. IEEE Antennas and Propagation Society, AP-S International Symposium (Digest) : 1962-1963. ScholarBank@NUS Repository. https://doi.org/10.1109/APS.2013.6711639
Abstract:	This paper investigates the limitation of Negative Impedance Converter (NIC) using Operational Amplifier (Op-Amp). The limitation is theoretical analyzed and then experimentally verified. The results show that, the Op-Amp based NIC has complex input impedance. In addition, the input impedance presents a negative resistance with large magnitude, if a negative small capacitance is desired for matching an electrically small antenna. Therefore, an Op-Amp based NIC reduces the efficiency of the whole matching network, and limits its application in matching electrically small dipole or monopole antenna with large negative capacitive reactance. © 2013 IEEE.
Source Title:	IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)
URI:	http://scholarbank.nus.edu.sg/handle/10635/128922
ISBN:	9781467353175
ISSN:	15223965
DOI:	10.1109/APS.2013.6711639
Appears in Collections:	Staff Publications

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