Leaky-Wave Antennas for 5G/B5G Mobile Communication Systems: A Survey

Abstract

Since leaky-wave antennas (LWAs) have the advantages of high directivity, low loss and structural simplicity, LWAs are very suitable for designing millimeter-wave (mmW) antennas. The purpose of this paper is to review the latest research progress of LWAs for 5G/ B5G mobile communication systems. Firstly, the conventional classification and design methods of LWAs are introduced and the effects of the phase constant and attenuation con‐ stant on the radiation characteristics are discussed. Then two types of new LWAs for 5G/ B5G mobile communication systems including broadband fixed-beam LWAs and frequencyfixed beam-scanning LWAs are summarized. Finally, the challenges and future research di‐ rections of LWAs for 5G/B5G mobile communication systems are presented.