研究目的
Investigating the design and performance of a silicon-on-insulator beamsteering system for microwave phased-array antennas using true time delays.
研究成果
The paper proposes a novel, manufacturable on-chip true time-delay (TTD) system for optical control of a microwave phased-array antenna (MPAA), demonstrating feasibility through theoretical modeling and simulation. The system utilizes thermo-optically controlled cascaded arrays of Bragg resonators within silicon-on-insulator nanowire-waveguides, offering a compact and efficient solution for beamsteering applications in the X and Ku bands. The study highlights the potential for steering angles up to 48° with minimal insertion loss and discusses the implications for future research and development in photonic integrated circuits for MPAA control.
研究不足
The study is theoretical and simulation-based, lacking experimental validation. The proposed system's performance may be affected by fabrication errors, thermal fluctuations, and the practical limitations of integrating multiple WBGRs into a compact chip area.
1：Experimental Design and Method Selection:
The study employs theoretical modeling and simulation to design and project the performance of a silicon-on-insulator beamsteering system. It uses a cascade connection of waveguide Bragg grating resonators (WBGRs) separated by straight waveguides, with thermo-optical control for time delay induction.
2：Sample Selection and Data Sources:
The research focuses on the design and simulation of WBGRs and their integration into a beamsteering system, without physical samples.
3：List of Experimental Equipment and Materials:
The study simulates the use of SOI nanowire-waveguides with specific dimensions and properties for the delay lines and WBGRs.
4：Experimental Procedures and Operational Workflow:
The methodology involves designing WBGRs with specific properties, simulating their integration into a delay line system, and evaluating the system's performance in beamsteering applications.
5：Data Analysis Methods:
The analysis includes evaluating the reflectivity and transmittivity spectra of WBGRs, insertion loss, and time delay characteristics of the delay line system.
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