Application of Characteristic Modes and Non-Foster Multiport Loading to the Design of Broadband Antennas

A conceptual framework is proposed to systematically design antennas with broadband impedance and pattern characteristics using multiple reactive loads. Antennas of arbitrary geometry can have their bandwidths expanded using this technique. The technique is applied to a narrow band thin wire dipole...

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Bibliographic Details
Published in:IEEE transactions on antennas and propagation 2010-01, Vol.58 (1), p.203-207
Main Authors: Obeidat, K.A., Raines, B.D., Rojas, R.G.
Format: Article
Language:English
Subjects:
Antenna radiation patterns
Antennas
Applied sciences
Bandwidth
Broadband
Broadband antennas
characteristic modes
Design engineering
Dipole antennas
Dipoles
electrically small antennas (ESA)
Exact sciences and technology
Frequency
Frequency bands
Geometry
Impedance
Loaded antennas
Narrowband
non-Foster circuits
non-Foster loading
Radiocommunications
Simulation
Telecommunications
Telecommunications and information theory
Wire
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Description
Summary:A conceptual framework is proposed to systematically design antennas with broadband impedance and pattern characteristics using multiple reactive loads. Antennas of arbitrary geometry can have their bandwidths expanded using this technique. The technique is applied to a narrow band thin wire dipole antenna to demonstrate its main features. It is shown that the loaded antenna resonates a desired current over a wide frequency band. The loads are shown to require non-Foster elements when realized. Simulations demonstrate the broadband characteristics of both the dipole input impedance and radiation pattern.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2009.2036281