方向性、阻抗和极化特性在一个很宽的波段内几乎保持不变的天线，称为宽频带天线。早期的宽频带天线有菱形天线、V形天线、倍波天线、盘锥形天线等，新的宽频带天线有对数周期天线等。
... broad band amplifier 宽带放年夜器 broad band antenna 宽频带天线 broad band cable 宽频带电缆 ...
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... broadband disturbance 宽带干扰 ; 宽带激励 broadband antenna 宽带天线 ; 宽波段天线 ; 宽频天线 ; 宽频带天线 broadband telecommunications 宽频带远程通讯 ; 宽带通信 ...
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... broadband access 宽带接入; 宽频接取 broadband aerial 宽频带天线 broadband age 宽带时代 ...
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用于电磁兼容试验的宽频带天线有很多类型，如双锥天线、对数周期天线、螺旋天线、喇叭天线等等。
There are all kinds of antennas used in EMC test such as biconical antennas, log periodic antenna, helical antenna, ridged horn antenna and etc.
椭圆形平板天线有结构简单、频带宽、馈电相对简单等优点，可以满足小型化天线同时具有宽频带和高增益的要求。
The elliptical planar monopole antenna has the advantages of simple structure, wide band and relatively simple feed, so it can meet the demands of wide-band and high-gain at the same time.
螺旋天线不仅在宽频带上具有近乎一致的电阻性输入阻抗，而且在同样的频带上按超增益端射阵的波瓣图工作。
Helical antenna has not only almost identical to the resistive input impedance in broad bandwidth, but also works by the end of super-gain front lobed map in the same frequency band.
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