A High-Isolation Dual-Band Base Station Antenna Design for Full Duplex Technologies

Full duplex schemes technologies have considerable potential to improve the performance of future generations of mobile communication systems. While promising, these technologies face several challenges, particularly self- and cross-link-interference. This paper addresses the self-interference issue, which can severely impact the performance of full duplex systems. A novel dual-band antenna architecture tailored for full duplex systems is presented alongside the design of two shielding structures and their performance are evaluated in electromagnetic simulation software. The simulation results indicate that the isolation between a transmit beam and a receive radio branch can reach more than 80 dB over a support of 500 MHz for different beam steering directions.