研究目的
Investigating the design and performance of a two-dimensional electronically controlled scanning phased array antenna based on liquid crystal material.
研究成果
The simulation results show that the two-dimensional phase scan is realized by tuning the excitation phase of each unit, and the scanning angle is greater than ±30°. The efficiency of the antenna is 79%, the gain is about 5.7 dBi, and the working bandwidth of the array is more than 4 GHz, which has a certain value in engineering applications.
研究不足
The tuning range of the liquid crystal is limited, and the length of the transmission line must be long enough to meet the phase difference between the antenna units. Additionally, the insufficient number of units and large spacing between units can cause the antenna pattern to deflect into two gate lobes when the dielectric constant of liquid crystal increases to the maximum.
1：Experimental Design and Method Selection:
The study involves the design of a phased array antenna using liquid crystal material for electronic scanning. The methodology includes the use of a 2×2 microstrip patch antenna array, a continuously variable helical folded delay line phase shifter, and a RF feed and bias network.
2：Sample Selection and Data Sources:
The research utilizes simulation results to analyze the performance of the phased array antenna.
3：List of Experimental Equipment and Materials:
The materials include liquid crystal type LC-BYE7, Rogers RO4350 dielectric substrate, and Rogers RT/duroid 5880 substrate materials.
4：Experimental Procedures and Operational Workflow:
The design process involves the study of a suspended stripline power divider, ground coplanar waveguide-suspended stripline transition structure, and broadband patch antenna. The phased array is developed by cascading these circuits.
5：Data Analysis Methods:
The performance of the antenna is analyzed through simulation results, focusing on the scanning angle and bandwidth.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
