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我的 Blog:
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[Ω〖物理〗]
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[℃〖化学〗]
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天线增益[Antenna Gain]
[2005-11-3]
iamet
发表在
Ω〖物理〗
The gain of an
antenna
is defined as
(1)
where
D
is the
directivity
,
e
is the antenna efficiency, and
is the antenna efficiency.
The directional gain is then defined by
(2)
where
p
is fraction of signal with polarization of antenna,
is the aperture efficiency, and
(3)
For a thermal (i.e., unpolarized) source,
.
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is the antenna efficiency.
is the aperture efficiency, and 
.