研究目的
To investigate enabling technologies and develop a proof-of-concept prototype for a low-cost and low-profile compact CP passive PAA for mm W applications (Ka-band systems specifically).
研究成果
The paper successfully presents the development and fabrication of a novel Ka-band CP passive PAA, achieving high performance with a wide scanning angle and high cross-polarization discrimination. The proposed system is suitable for large-scale mm-W PAA systems with full electronic beam control capabilities.
研究不足
The phase shifter requires a very small airgap height for full 360o phase shift, which was not achievable due to surface roughness of the fabricated GCPW line. This limitation suggests the need for airtight, hermetically-sealed packaging and very smooth metallic GCPW surfaces in future research.
1：Experimental Design and Method Selection:
The methodology involves designing a CP antenna integrated with a high-performance passive phase shifter, proposing a new low-cost and low-profile magnetic actuator, and utilizing a 3-D printed polymer package to enclose the phase shifter.
2：Sample Selection and Data Sources:
A 1 × 4 passive sub-array operating at the Ka-band frequency band is investigated.
3：List of Experimental Equipment and Materials:
Includes a CP antenna, a passive phase shifter, a magnetic actuator, and a 3-D printed polymer package.
4：Experimental Procedures and Operational Workflow:
The process involves designing, fabricating, and testing the CP passive PAA system.
5：Data Analysis Methods:
The performance is evaluated based on radiation efficiency, gain, and cross-polarization discrimination over a wide scan angle.
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