Magnetic field assisted beam-scanning leaky-wave antenna utilizing one-way waveguide

Lujun Hong, Yun You, Qian Shen, Yazhou Wang, Xing Liu, Hang Zhang, Chiaho Wu, Linfang Shen, Xiaohua Deng, Sanshui Xiao

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We propose a Leaky-Wave Antenna (LWA) based on one-way yttrium-iron-garnet (YIG)-air-metal waveguide. We first analyze the dispersion of the LWA, showing the one-way feature and the radiation loss. Owing to the unique one-way dispersive property, the beam radiated from the LWA can have very narrow beam width, at the same time having large scanning angle. The main beam angle obtained by full-wave simulation is consistent with our theoretical prediction with the aid of the dispersion. For a given frequency, we can realize continuous beam scanning by varying the magnetic field, where the 3 dB beam width is much narrower than previously demonstrated. Our results pave a new way to realize continuous angle scanning at a fix frequency for modern communications.
Original languageEnglish
Article number16777
JournalScientific Reports
Issue number1
Number of pages8
Publication statusPublished - 2019


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