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antenna gain calculate

资料介绍
Gain of directional antennasWatkins-Johnson Company Tech-notes Copyright 1976 Watkins-Johnson Company Vol. 3 No. 4 July/August 1976

Gain of Directional Antennas
John E. Hill

Gain is an antenna property dealing with an antenna’s ability to direct its radiated power in a desired direction, or synonymously, to receive energy preferentially from a desired direction. However, gain is not a quantity which can be defined in terms of physical quantities such as the Watt, ohm or joule, but is a dimensionless ratio. As a consequence, antenna gain results from the interaction of all other antenna characteristics. This article will explore these interactions using elementary definitions of antenna properties. Antenna characteristics of gain, beamwidth and efficiency are independent of the antenna’s use for either transmitting
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