Reactively Steered Ring Antenna Array for Automotive Application
Reactively Steered Ring Antenna Array for Automotive Application
A novel type of smart antenna, called a reactively steered ring antenna array (RSRAA), is proposed. The antenna features a conformal configuration with three overlapping one-wavelength ring elements. Directivity can be controlled by changing the values of variable reactance circuits that are embedded in the antenna. The antenna can be mounted on the windshield of an automobile without interfering with the view of the driver. An equivalent model of six dipole elements is derived from the original antenna configuration to enable simple calculation of directivity when a set of reactance values is given. The validity of the proposed equivalent model is confirmed by comparing simulation results calculated by the equivalent model and by the method of moments. Another simulation shows that the conventional reactance domain multiple signal classification algorithm can be applied to the proposed antenna while keeping the estimated direction-of-arrival number equal to the number of reactance circuits. In addition, the characteristics of an RSRAA, which is optimized at 2.4 GHz and is mounted on an automobile, are measured in an anechoic chamber, and directivity control is found to be implemented effectively.
1902-1908
Sugiura, Shinya
4c8665dd-1ad8-4dc0-9298-bf04eded3579
Iizuka, Hideo
2897606d-8a83-4980-a9c5-8e764b68f6db
July 2007
Sugiura, Shinya
4c8665dd-1ad8-4dc0-9298-bf04eded3579
Iizuka, Hideo
2897606d-8a83-4980-a9c5-8e764b68f6db
Sugiura, Shinya and Iizuka, Hideo
(2007)
Reactively Steered Ring Antenna Array for Automotive Application.
IEEE Transactions on Antennas and Propagations, 55 (7), .
Abstract
A novel type of smart antenna, called a reactively steered ring antenna array (RSRAA), is proposed. The antenna features a conformal configuration with three overlapping one-wavelength ring elements. Directivity can be controlled by changing the values of variable reactance circuits that are embedded in the antenna. The antenna can be mounted on the windshield of an automobile without interfering with the view of the driver. An equivalent model of six dipole elements is derived from the original antenna configuration to enable simple calculation of directivity when a set of reactance values is given. The validity of the proposed equivalent model is confirmed by comparing simulation results calculated by the equivalent model and by the method of moments. Another simulation shows that the conventional reactance domain multiple signal classification algorithm can be applied to the proposed antenna while keeping the estimated direction-of-arrival number equal to the number of reactance circuits. In addition, the characteristics of an RSRAA, which is optimized at 2.4 GHz and is mounted on an automobile, are measured in an anechoic chamber, and directivity control is found to be implemented effectively.
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Published date: July 2007
Organisations:
Electronics & Computer Science
Identifiers
Local EPrints ID: 264779
URI: http://eprints.soton.ac.uk/id/eprint/264779
ISSN: 0018-926X
PURE UUID: 58b4e78d-d113-4f24-88ac-9a2a384706b7
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Date deposited: 04 Nov 2007
Last modified: 07 Jan 2022 21:14
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Contributors
Author:
Shinya Sugiura
Author:
Hideo Iizuka
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