Asymmetric Tri-Band Self-Multipath Decoupled Antenna Pair for Mobile Terminals

This paper proposes an asymmetric tri-band self-multipath decoupled antenna pair that can generate three decoupling nulls for the application of mobile terminals. Through the asymmetric configuration of the antenna pair, the first antenna generates self-multipath decoupling nulls in both N41 and N79 bands, while the second antenna establishes a self-multipath decoupling null in the N78 band, collectively achieving three decoupling nulls across 5G NR bands. Furthermore, the functional efficacy of the decoupling null generation mechanism is validated through systematic equivalent circuit analysis. The proposed antenna design provides promising potential applications in enabling ultra-compact multi-band antenna systems, particularly for space-constrained 5G mobile terminal.