Electronically Tunable High Gain Leaky-wave Antenna using Eighth-mode SIW

2018 IEEE MTT-S International Microwave and RF Conference (IMaRC) Pub Date : 2018-11-01 DOI:10.1109/IMaRC.2018.8877205

Anirban Sarkar, M. Adhikary, Abhishek Sharma, A. Biswas, M. Akhtar

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Abstract

A novel electronically tunable compact high gain eighth-mode substrate integrated waveguide (EMSIW) based leaky-wave antenna in planar environment is proposed and investigated. The proposed antenna uses 1/8th mode SIW resonator incorporated with tunable delay line which help to steer the radiated beam. The beam switching is performed by changing the states of PIN diodes. Basically, by changing the bias voltage systematically, the polarity of diodes are changed accordingly which account a phase delay in the transmission line and steer the main beam at a fixed frequency. Due to the systematic placement of radiating EMSIW resonator unit cell on microstrip environment, the radiation intensity is improved which further enhances the overall gain of the antenna. Simulated results show that the proposed antenna is able to operate within frequency band of 9.5-11.5 GHz with beam scanning range of 48° and maximum gain of 13 dBi. All the experimental results show a fair agreement with the corresponding simulated data that validating the proposed approach.

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采用八模SIW的电子可调谐高增益漏波天线

提出并研究了平面环境下一种新型的电子可调谐紧凑型高增益八模基板集成波导漏波天线。该天线采用1/8模SIW谐振腔，并结合可调延迟线，有助于引导辐射波束。通过改变PIN二极管的状态来实现光束开关。基本上，通过系统地改变偏置电压，相应地改变二极管的极性，这在传输线中占一个相位延迟，并将主波束引导在固定频率上。由于在微带环境中系统地放置了辐射EMSIW谐振单元，提高了辐射强度，进一步提高了天线的整体增益。仿真结果表明，该天线能够工作在9.5 ~ 11.5 GHz频段，波束扫描范围为48°，最大增益为13 dBi。实验结果与相应的仿真数据吻合较好，验证了所提方法的有效性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

2018 IEEE MTT-S International Microwave and RF Conference (IMaRC)

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