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Title: Negative impedance elements and their applications in antenna miniaturization
Authors: Zheng, Yujia.
Keywords: DRNTU::Engineering::Electrical and electronic engineering::Antennas, wave guides, microwaves, radar, radio
Issue Date: 2010
Abstract: Electrically small antennas present high-Q impedance characterized by large reactance and small radiation resistance. For such antennas, the effectiveness of passive matching is severely limited by gain-bandwidth theory, which predicts narrow bandwidths and/or poor gain. It is possible in theory to transform the antenna into an active component that is no longer limited by the gain-bandwidth-size. The technique of non-foster impedance matching employs active networks of negative impedance converters (NICs) such as negative inductors and capacitors to bypass the restrictions of gain-bandwidth theory. This report mainly focuses on how to realize the negative impedance converters and their applications in antenna miniaturization design.
Rights: Nanyang Technological University
Fulltext Permission: restricted
Fulltext Availability: With Fulltext
Appears in Collections:EEE Student Reports (FYP/IA/PA/PI)

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