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
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