Lun Cui

Data Availability Statement The authors have nothing to report. References 1, , , et al., “The Advanced Multifunction RF Concept,” IEEE Transactions on Microwave Theory and Techniques 53, no. 3 (March 2005): 1009–1020. 2, , , , , and , “Filtering Antennas: Design Methods and Recent Developments,” IEEE Microwave Magazine 22, no. 11 (November 2021): 52–63.

Conflicts of Interest The authors declare no conflicts of interest. References 1, , , , , and , “In-Band Full-Duplex Wireless: Challenges and Opportunities,” IEEE Journal on Selected Areas in Communications 32, no. 9 (2014): 1637–1652. 2, , and , “In-Band Full-Duplex Technology: Techniques and Systems Survey,” IEEE Transactions on Microwave Theory and Techniques 67, no. 7 (2019): 3025–3041.

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