A Novel Design of Single-Layer Wideband Differential-Fed Dual-Polarized Patch Antenna Loaded With Mushroom Structures

IF 4.8 2区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC IEEE Antennas and Wireless Propagation Letters Pub Date : 2024-08-02 DOI:10.1109/LAWP.2024.3437680

Hai Dang Le;Son Xuat Ta

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Abstract

This letter presents a novel design of a single-layer differential-fed dual-polarized antenna with low-profile, wideband, and high-isolation characteristics. The antenna is composed of a main cross-shape patch connected to four symbiotic patches by stepped stubs. The patches are symmetrically loaded with mushroom structures to generate extra resonant modes, characterized as TM

$_{30}$

, TM

$_{12}$

, TM

$_{50}$

, and slot modes, which are combined with the TM

$_{10}$

mode of the main patch for the wide bandwidth. Thanks to the differential feed and structural symmetry, a very high isolation is achieved among the ports. The final design with low profile of

$0.08\lambda _{L}$

(

$\lambda _{L}$

is the free-space wavelength at the lowest operational frequency) has been fabricated and measured. The measurements result in a bandwidth of 51.9% [(6.0 to 10.2) GHz] for 10 dB return loss and an isolation of

$\ge$

42 dB. The dual-polarized broadside radiation is validated by far-field measurements showing an average gain of 8.6 dBi and a cross-polarization level of

$\leq -\text{20}$

dB within the bandwidth.

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装载蘑菇结构的单层宽带差分馈电双极化贴片天线的新型设计

本文介绍了一种新颖的单层差分馈电双极化天线，具有低轮廓、宽带和高隔离特性。该天线由一个主十字形贴片组成，通过阶梯式桩与四个共生贴片相连。这些贴片对称加载蘑菇结构，产生额外的谐振模式，表征为TM $_{30}$、TM $_{12}$、TM $_{50}$和槽模式，这些模式与主贴片的TM $_{10}$模式相结合，从而获得更宽的带宽。由于差分馈电和结构对称，在端口之间实现了非常高的隔离。最终设计的低轮廓$0.08\lambda _{L}$ （$\lambda _{L}$是最低工作频率的自由空间波长）已经制作和测量。测量结果的带宽为51.9% [(6.0 to 10.2) GHz] for 10 dB return loss and an isolation of $\ge$ 42 dB. The dual-polarized broadside radiation is validated by far-field measurements showing an average gain of 8.6 dBi and a cross-polarization level of $\leq -\text{20}$ dB within the bandwidth.

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来源期刊

IEEE Antennas and Wireless Propagation Letters 工程技术-电信学

CiteScore

8.00

自引率

9.50%

发文量

529

审稿时长

1.0 months

期刊介绍： IEEE Antennas and Wireless Propagation Letters (AWP Letters) is devoted to the rapid electronic publication of short manuscripts in the technical areas of Antennas and Wireless Propagation. These are areas of competence for the IEEE Antennas and Propagation Society (AP-S). AWPL aims to be one of the "fastest" journals among IEEE publications. This means that for papers that are eventually accepted, it is intended that an author may expect his or her paper to appear in IEEE Xplore, on average, around two months after submission.