A 2 × 2 pattern-diversity MIMO antenna with high isolation for full-duplex applications
In this paper, a novel 2×2 MIMO full-duplex radio (FDR) antenna that incorporates dual-fed antennas and circulators with reflection-coefficient controllers (RCCs) is proposed. This system mitigates self-talk self-interference (SI) and cross-talk SI, which are significant challenges in MIMO FDR syste...
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-10-01
|
| Series: | Ain Shams Engineering Journal |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2090447925003181 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | In this paper, a novel 2×2 MIMO full-duplex radio (FDR) antenna that incorporates dual-fed antennas and circulators with reflection-coefficient controllers (RCCs) is proposed. This system mitigates self-talk self-interference (SI) and cross-talk SI, which are significant challenges in MIMO FDR systems due to the increased number of antennas. The dual-fed antenna, designed for pattern diversity, introduces notches on the ground plane to cancel out two coupling paths, ensuring that the proposed antenna reduces the cross-talk SI. In addition, RCCs enhance limited isolation and adjust the isolation band of circulators by canceling out inherent leakage of the circulator and reflected signal from the antenna such that it reduces self-talk SI. With these two strategies, the proposed antenna covers a 180∘ angular range and reduces the number of radiators. Measurements show that the proposed antenna achieves over 30-dB SI suppression for all SIs within the 3.6–3.7 GHz band, and the peak gains for both ports are 3.61 dBi. |
|---|---|
| ISSN: | 2090-4479 |