Modeling Antennas on Automobiles in the VHF and UHF Frequency Bands, Comparisons of Predictions and Measurements PDF Download
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Category :
Languages : en
Pages : 5
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Book Description
This paper describes comparisons of analysis and measurements of antenna patterns on automobiles in the VHF and UHF frequency bands. The actual measurements and analysis were performed at six different frequencies ranging from 41 MHz to 918 MHz. An antenna on a vehicle in a roadway environment in the presence of Earth does not have antenna patterns or input impedances as if it were located in free space or over a perfectly conducting ground plane. Antenna patterns of a whip antenna on a vehicle were measured on an outdoor antenna range with the vehicle on a 10 meter diameter turntable. Patterns were also measured with the vehicle over real ground away from the turntable to determine the effects of the steel turntable on antenna patterns. The three-antenna gain measurement technique was used to measure antenna gain. The measured patterns and gains were compared to predictions using the Numerical Electromagnetics Code (NEC-4).
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 5
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Book Description
This paper describes comparisons of analysis and measurements of antenna patterns on automobiles in the VHF and UHF frequency bands. The actual measurements and analysis were performed at six different frequencies ranging from 41 MHz to 918 MHz. An antenna on a vehicle in a roadway environment in the presence of Earth does not have antenna patterns or input impedances as if it were located in free space or over a perfectly conducting ground plane. Antenna patterns of a whip antenna on a vehicle were measured on an outdoor antenna range with the vehicle on a 10 meter diameter turntable. Patterns were also measured with the vehicle over real ground away from the turntable to determine the effects of the steel turntable on antenna patterns. The three-antenna gain measurement technique was used to measure antenna gain. The measured patterns and gains were compared to predictions using the Numerical Electromagnetics Code (NEC-4).
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ISBN:
Category : Aeronautics
Languages : en
Pages : 294
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Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 920
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Author:
Publisher:
ISBN:
Category : Antennas (Electronics)
Languages : en
Pages : 1040
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Author: R. A. Burberry
Publisher: IET
ISBN: 9780863412691
Category : Technology & Engineering
Languages : en
Pages : 318
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Book Description
Describes the VHF and UHF antennas for the 30-3000 Mhz range that have been developed over the past 50 years, including many designs that have not previously been treated in detail, and several new uses for old designs. Among the topics are methods of predicting and measuring the performance of antennas, and how it is affected by the local environment, both normal and adverse, and by the structures on which the antennas are mounted, both fixed and mobile (including humans). Addressed primarily to practicing antenna engineers; the basic theory is assumed to be known except for the less known types. Distributed by INSPEC. Annotation copyright by Book News, Inc., Portland, OR
Author: Institution of Electrical Engineers
Publisher:
ISBN:
Category : Antennas (Electronics)
Languages : en
Pages : 436
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Book Description
Author: Ramon L. Jesch
Publisher:
ISBN:
Category : Automobiles
Languages : en
Pages : 44
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Author: Institute for Telecommunication Sciences
Publisher:
ISBN:
Category : Telecommunication
Languages : en
Pages : 356
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Author:
Publisher:
ISBN:
Category : Antennas (Electronics)
Languages : en
Pages : 434
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Author: Michael Robert Markey
Publisher:
ISBN:
Category : Antennas (Electronics)
Languages : en
Pages : 270
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Book Description
