“directivity(symbol: D)”的概念、定义、翻译、参考文献-科学参考

directivity(symbol: D)

Electronics and Electrical Engineering

The value of the gain of an antenna in the direction of its maximum value. Equivalently it is the ratio of the antenna’s maximum radiation intensity over that of an isotropic source. It can then be related to the total radiated power of the antenna so that
$D = \frac{U_{max}}{U_{0}} = \frac{4 π U_{max}}{P_{rad}}$
where U_max is the maximum radiation intensity, U₀ is the radiation intensity of an isotropic source, and P_rad is the total radiated power.

单词	directivity(symbol: D)
释义	directivity(symbol: D) Electronics and Electrical Engineering The value of the gain of an antenna in the direction of its maximum value. Equivalently it is the ratio of the antenna’s maximum radiation intensity over that of an isotropic source. It can then be related to the total radiated power of the antenna so that $D = \frac{U_{max}}{U_{0}} = \frac{4 π U_{max}}{P_{rad}}$ where U_max is the maximum radiation intensity, U₀ is the radiation intensity of an isotropic source, and P_rad is the total radiated power.
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