Null Frequency Scanning Leaky-Wave Antenna Based on Substrate Integrated Waveguide
Xiwang Dai
School of Electronics and Information, Hangzhou Dianzi University, Hangzhou, Zhejiang, China
State Key Laboratory of Millimeter Waves, Southeast University, Nanjing, Jiangsu, China
Search for more papers by this authorYang Hui Fu
School of Electronics and Information, Hangzhou Dianzi University, Hangzhou, Zhejiang, China
Search for more papers by this authorHan Peng Ruan
School of Electronics and Information, Hangzhou Dianzi University, Hangzhou, Zhejiang, China
Search for more papers by this authorZe Li
School of Electronics and Information, Hangzhou Dianzi University, Hangzhou, Zhejiang, China
Search for more papers by this authorCorresponding Author
Hui Hong
School of Electronics and Information, Hangzhou Dianzi University, Hangzhou, Zhejiang, China
Correspondence: Hui Hong ([email protected])
Search for more papers by this authorXiwang Dai
School of Electronics and Information, Hangzhou Dianzi University, Hangzhou, Zhejiang, China
State Key Laboratory of Millimeter Waves, Southeast University, Nanjing, Jiangsu, China
Search for more papers by this authorYang Hui Fu
School of Electronics and Information, Hangzhou Dianzi University, Hangzhou, Zhejiang, China
Search for more papers by this authorHan Peng Ruan
School of Electronics and Information, Hangzhou Dianzi University, Hangzhou, Zhejiang, China
Search for more papers by this authorZe Li
School of Electronics and Information, Hangzhou Dianzi University, Hangzhou, Zhejiang, China
Search for more papers by this authorCorresponding Author
Hui Hong
School of Electronics and Information, Hangzhou Dianzi University, Hangzhou, Zhejiang, China
Correspondence: Hui Hong ([email protected])
Search for more papers by this authorABSTRACT
To protect the antenna from electromagnetic interference in a specific direction and effectively suppress interference signals, a null frequency scanning antenna based on a substrate integrated waveguide (SIW) is proposed. Two rows of periodic elliptical slots are etched on the SIW, which act as radiation source for generating various spatial harmonics that can be superimposed and staggered to generate a directional gain beam. By adjusting the period of the two rows of slots, a null radiation pattern can be obtained. The difference between beam gain and null depth can exceed 21 dB. The beam direction can shift with frequency, enabling frequency scanning over an angular range of approximately 40°. In addition, the proposed antenna offers advantages such as simple design, high gain, low profile, and low cost, making it a versatile and practical solution for a wide range of applications.
Open Research
Data Availability Statement
Data sharing is not applicable to this article as no new data were created or analyzed in this study.
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