研究目的
Investigating the feasibility of roll-to-roll reverse offset (R2R-RO) printing technology for the mass fabrication of millimeter-wave antennas on flexible substrates.
研究成果
The R2R-RO printing technology is a good candidate for the fabrication of IoT and 5G devices, with the printed patch antenna achieving a measured peak realized gain of 4.5 dBi.
研究不足
The study notes the need for future work to improve ink conductivity and fabricate a metal ground layer on the back side of substrates to ensure good quality ground plane for the patch antenna.
1：Experimental Design and Method Selection:
The study employs R2R-RO printing technology for fabricating CPW transmission lines and microstrip patch antennas on flexible substrates.
2：Sample Selection and Data Sources:
Polyethylene Naphthalate (PEN) substrates with a thickness of 125 μm are used.
3：List of Experimental Equipment and Materials:
Silver nanoparticle ink, PDMS blanket, and PEN substrates.
4：Experimental Procedures and Operational Workflow:
The conductive ink is applied on a PDMS blanket, part of the ink is taken away by a stamp, and the remaining ink forms the pattern on the substrate.
5：Data Analysis Methods:
S-parameters and realized gain are measured to evaluate the performance of the printed structures.
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