Dual-Band, Linearly Polarized, Electrically Small Huygens Dipole Antennas
Dual-Band, Linearly Polarized, Electrically Small Huygens Dipole Antennas
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双频、线性极化、电气小型惠更斯偶极子天线
DOI：
10.1109/tap.2018.2874763
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发表时间：
2019-01-01
影响因子：
5.7
通讯作者：
Ziolkowski, Richard W.
中科院分区：
文献类型：
--
作者：
Tang, Ming-Chun;Wu, Zhentian;Ziolkowski, Richard W.
两个电小，双频惠更斯偶极天线报道。在这两种设计中，两对磁场和电场近场共振寄生（NFRP）元件有机地结合在一个小而低调的封装中。仅用一个同轴进给驱动元件就能有效地激励NFRP元件。一个双频惠更斯系统在其两个工作频率下产生平行的线极化（LP）场。另一种双频系统产生两个正交的LP场。附加的寄生元件被引入以减轻NFRP元件对之间的相互耦合效应。两种天线在l波段的原型的测量值表明它们的电气尺寸小（ka < 1）和低轮廓（类似于0.03 lambda(0)）。它们还确认了它们的宽侧辐射和极化性能特性，以及每个工作频率之间的隔离性。在这两个频率下，它们的分数带宽、峰值实现增益、前后比和辐射效率分别接近0.6%,>为2dbi， >为10db， >为60%。这些双频系统将在各种便携、紧凑的无线设备中提供多功能性能。
Two electrically small, dual-band Huygens dipole antennas are reported. In both designs, two pairs of magnetic and electric near-field resonant parasitic (NFRP) elements are combined organically within an electrically small, low profile package. The NFRP elements are excited effectively using only one coaxial-fed-driven element. One dual-band Huygens system produces parallel, linearly polarized (LP) fields at its two operating frequencies. The other dual-band system produces two orthogonal LP fields. Additional parasitic elements are introduced to mitigate the mutual coupling effects between the pairs of NFRP elements. The measured values for prototypes of both antennas in the L-band demonstrate their electrically small size (ka < 1) and low profile (similar to 0.03 lambda(0)). They also confirm their broadside radiation and polarization performance characteristics, as well as the isolation between each operating frequency. Their fractional bandwidths, peak realized gains, front-to-back ratios, and radiation efficiencies are, respectively, similar to 0.6%, > 2 dBi, > 10 dB, and > 60% at both frequencies. These dual-band systems would provide multifunctional performance in a variety of portable, compact wireless devices.