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首页> 外文期刊>Frequenz >Bandwidth Enhancement of Cylindrical Dielectric Resonator Antenna Using Thin Dielectric Layer Fed by Resonating Slot
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Bandwidth Enhancement of Cylindrical Dielectric Resonator Antenna Using Thin Dielectric Layer Fed by Resonating Slot

机译：利用谐振槽馈电的薄介电层增强圆柱介电谐振器天线的带宽

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摘要

In this paper Cylindrical Dielectric Resonator Antenna (CDRA) has been designed for X-band frequency range applications with slot feeding. Bandwidth of designed cylindrical dielectric resonator antenna has been enhanced by making the slot to be resonating and inserting very thin low permittivity dielectric layer between the slot and CDRA. Resonating slot excites the closely spaced HEM11 delta and HEM21 delta mode inside the antenna as well as provides the resonance at the upper side of desired X-band. Low profile low permittivity layer provides the excellent matching of these modes and shift the HEM21 delta mode to higher frequency side at 11.25 GHz with better impedance matching. By combining all of three resonances, nearly 85% increment in impedance Bandwidth has been obtained with reference to non resonating slot excited CDRA. Fractional impedance bandwidth for proposed design is 48% and average Gain of 6 dB with more than 92% radiation efficiency has been shown by the antenna throughout the desired band with broadside pattern.
机译：在本文中，圆柱形介电谐振天线（CDRA）已设计用于具有缝隙馈电的X波段频率范围应用。通过使缝隙谐振并在缝隙和CDRA之间插入非常薄的低介电常数介电层，可以提高设计的圆柱形介质谐振器天线的带宽。谐振缝隙激发天线内部紧密间隔的HEM11增量模式和HEM21增量模式，并在所需X波段的上侧提供谐振。薄型低介电常数层提供了这些模式的出色匹配，并以更好的阻抗匹配将HEM21增量模式转移到11.25 GHz的更高频率侧。通过结合所有三个谐振，相对于非谐振缝隙激励CDRA，已获得了近85％的阻抗带宽增加。拟议设计的分数阻抗带宽为48％，天线在宽边方向图的整个所需频段上均显示出6 dB的平均增益和超过92％的辐射效率。

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