Periodically Loaded Straight Wires for Radio Wave Transmission Control

Calculating current distributions along conducting straight wires reveals that the electric influence of the wires is more effectively reduced by loading reactances than it is by disconnecting the loading ports. With the electric influence almost eliminated, a sheet consisting of reactively loaded s...

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Bibliographic Details
Published in:IEEE transactions on antennas and propagation 2011-01, Vol.59 (1), p.328-332
Main Authors: Iigusa, K, Harada, H, Kato, S, Hirokawa, J, Ando, M
Format: Article
Language:English
Subjects:
Antennas
Applied sciences
Dipole antennas
electromagnetic shielding
Exact sciences and technology
loaded scatters
Loading
Radiocommunications
Receiving antennas
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
Transmission and modulation (techniques and equipments)
Transmitting antennas
Varactors
Voltage control
Wires
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Summary:Calculating current distributions along conducting straight wires reveals that the electric influence of the wires is more effectively reduced by loading reactances than it is by disconnecting the loading ports. With the electric influence almost eliminated, a sheet consisting of reactively loaded straight wires can almost perfectly transmit a radio wave of a frequency determined by the interval between the loading ports and the reactance value. The frequency responses of radio wave transmissions for a normal incident plane wave are numerically calculated, and it is shown that by controlling the reactance value, the transmission can be changed more than 30 dB. Thus, a sheet by which radio wave transmission can be electronically controlled is proposed, and its operation is experimentally examined.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2010.2090488