加载多模电环谐振器和互补谐振结构的多缺口超宽带天线研究

Newest Updates in Physical Science Research Vol. 11 Pub Date : 2021-08-06 DOI:10.9734/bpi/nupsr/v11/10183d

I. Vendik, A. Rusakov, K. Kanjanasit

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引用次数: 0

摘要

多缺口超宽带(UWB)平面天线是一种由共面波导(CPW)馈电的圆形金属贴片设计的天线。该天线在2.5 - 12ghz频率范围内提供稳定的辐射方向图和宽带响应的阻抗带宽。为了实现平面超宽带天线的带陷波特性，采用了多模电环谐振器(ERR)。ERR位于天线的CPW结构下方。通过适当改变ERR结构的尺寸来调谐每个陷波频带。UWB天线在3.5、5.8和7.5 GHz频段表现出2.5 - 12ghz的多陷波特性。通过使用可变电容代替ERR准集总电容，提供了陷波带的可重构性。作为一种替代方法，可以使用由微带传输线馈电的圆形金属贴片天线。在这种情况下，陷波由微带线的地平面上的互补电感-电容(C-ELC)谐振器提供。陷波频率取决于C-ELC谐振器的尺寸。

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Study of Ultra-wideband Antenna with Multi-notch Band Loaded with a Multimode Electric Ring Resonator and a Complementary Resonance Structure

A multi-notch ultra-wideband (UWB) planar antenna designed as a circular metallic patch fed by a coplanar waveguide (CPW) is of high interest. The antenna provides a stable radiation pattern and impedance bandwidth of the wideband response in the frequency range 2.5 - 12 GHz. To achieve the band-notched characteristics of the planar UWB antenna, the multi-mode electric ring resonator (ERR) is used. The ERR is placed beneath the CPW structure of the antenna. Each of the notched frequency band is tuned by proper changing the dimensions of the ERR structure. The UWB antenna exhibits multi-notch characteristics in the 2.5–12 GHz frequency band at 3.5, 5.8, and 7.5 GHz. Reconfigurability of the notched band is provided by using variable capacitors instead of ERR quasi-lumped capacitances. As an alternative approach a circular metallic patch antenna fed by a microstrip transmission line may be used. In this case, the notch is provided by a complementary inductance-capacitance (C-ELC) resonator in the ground plane of the microstrip line. The notch frequency depends on the dimensions of the C-ELC resonator.

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Newest Updates in Physical Science Research Vol. 11

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