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Compact ultra-wideband monopole antenna with tunable notch bandwidth/frequency ratio
Frequenz ( IF 1.1 ) Pub Date : 2021-07-01 , DOI: 10.1515/freq-2020-0173
Karunesh Srivastava 1 , Gaurav Varshney 2 , Rajeev Singh 3
Affiliation  

A compact tunable notch band ultra-wideband (UWB) antenna is implemented. The band notch characteristics have been obtained by placing a square-shaped metallic loop in the upper ground plane connected via PIN diode. The obtained notched frequency bandwidth can be altered by changing the states of the PIN diode. UWB response with narrow-band notch operation is observed when PIN diode is in ON state. When the PIN diode is in OFF state, the bandwidth of the obtained band notch widens by suppressing the first higher-order resonance and thus a narrow dual-band response is obtained. Moreover, the ratio of the frequency of first higher-order to the fundamental mode in the pass-band can be tuned with the different values as 1.584 and 2.20 in the ON and OFF state of the PIN diode, respectively. Furthermore, the antenna structure offers a compact geometry for the operation with the UWB response with band notch characteristics.

中文翻译:

具有可调陷波带宽/频率比的紧凑型超宽带单极天线

实现了紧凑型可调谐陷波带超宽带 (UWB) 天线。带陷特性是通过在通过 PIN 二极管连接的上接地平面中放置一个方形金属环来获得的。可以通过改变 PIN 二极管的状态来改变获得的陷波频率带宽。当 PIN 二极管处于导通状态时,观察到具有窄带陷波操作的 UWB 响应。当PIN二极管处于OFF状态时,通过抑制一阶高阶谐振,获得的带陷波的带宽加宽,从而获得较窄的双带响应。此外,通带中的一阶高阶频率与基模频率之比可以在PIN二极管的ON和OFF状态下分别调整为1.584和2.20的不同值。此外,
更新日期:2021-07-04
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