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aperture2gain

Convert effective aperture to gain

Description

GdB = aperture2gain(A,lambda) returns the antenna gain GdB corresponding to an effective aperture A for an incident electromagnetic wave with wavelength lambda.

example

Examples

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An antenna has an effective aperture of 3 square meters. Find the antenna gain when used to capture an electromagnetic wave with a wavelength of 10 cm.

g = aperture2gain(3,0.1)
g = 
35.7633

Input Arguments

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Antenna effective aperture, specified as a positive scalar or as an N-element real-valued vector of positive values. If A is a vector, each element of A corresponds is the effective aperture of a different antenna. See Gain and Effective Aperture for a discussion of aperture and gain. Units are in square meters.

Data Types: double

Wavelength of the incident electromagnetic wave, specified as a positive scalar. The same wavelength applies to all antennas in A. The wavelength of an electromagnetic wave is the ratio of the wave propagation speed to the frequency. Units are in meters.

Data Types: double

Output Arguments

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Antenna gain, returned as a scalar or as an N-element real-valued vector. The elements of GdB represent the gain corresponding to the elements in A. The size of GdB equals the size of A. Units are in dBi.

Data Types: double

More About

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References

[1] Skolnik, M. Introduction to Radar Systems, 3rd Ed. New York: McGraw-Hill, 2001.

[2] Richards, M. Fundamentals of Radar Signal Processing, New York: McGraw-Hill, 2005.

Extended Capabilities

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Version History

Introduced in R2011a