Sensitivity Analysis of Self-Interference Cancellation in Differentially-Fed Shared-Patch Antenna Arrays For In-Band Full-Duplex Applications
Résumé
This paper investigates the influence of practical balun imperfections on self-interference cancellation (SIC) in differentially-fed shared-patch antennas designed for 2.5 GHz In-Band Full-Duplex systems. A four-port square patch antenna is employed as a reference to conduct a sensitivity analysis, quantifying SIC degradation induced by such imperfections. The study is further extended to a 1×4 linear array, constructed from the reference element, to examine the effects of feeding imbalance and beam steering at the array level. To mitigate these sensitivities, an enhanced antenna design incorporating decoupling slots and metallic vias between adjacent ports is introduced, yielding improved impedance matching, port isolation, and SIC performance. The proposed design demonstrates superior robustness against balun imperfections.
Mots clés
- in-band full-duplex
- ISAC
- IBFD
- differentially-fed antenna
- beam steering
- selfinterference cancellation
- JCAS
- balun imbalance
- Antenna array
- Antenna array balun imbalance beam steering differentially-fed antenna IBFD ISAC in-band full-duplex JCAS near-field cancellation selfinterference cancellation
- near-field cancellation
Domaines
| Origine | Fichiers produits par l'(les) auteur(s) |
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