英语翻译HPBW:The half power beamwidth (HPBW) can be defined as t

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英语翻译
HPBW:The half power beamwidth (HPBW) can be defined as the angle subtended by the half power points of the main lobe.
Main Lobe:This is the radiation lobe containing the direction of maximum radiation.
Minor Lobe:All the lobes other then the main lobe are called the minor lobes.These lobes represent the radiation in undesired directions.The level of minor lobes is usually expressed as a ratio of the power density in the lobe in question to that of the major lobe.This ratio is called as the side lobe level (expressed in decibels).
Back Lobe:This is the minor lobe diametrically opposite the main lobe.
Side Lobes:These are the minor lobes adjacent to the main lobe and are separated by various nulls.Side lobes are generally the largest among the minor lobes.

HPBW(半功率射束宽度）：半功率射束宽度可以用主瓣中的半功率点所对应的（包含的）角度来描述.
主瓣：它是一个辐射波瓣,其中含有最大辐射的方向.
副瓣：除了主瓣其它所有的瓣都被称作副瓣,这些副瓣展示的都是不必要的辐射或没有用方向的辐射.通常,副瓣的等级量用所述瓣中的功率密度与主（波）瓣的功率密度（这二者）的比值来描述.这个比值叫做旁瓣电平（以分贝数表示）.
后瓣：这也是一个副瓣,它正好与主瓣相反（所对的方向相反）.
旁瓣：旁瓣也属于副瓣,并与主瓣毗连.而且这些旁瓣还可以被各种无意义的密码（如零位,清空等）给予分离（出来）.一般而言,旁瓣在副瓣中站的比例量是最大的.

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