Compared to previous resin substrates (glass epoxy substrates, FR-4 substrates, FPC, etc.), Multi-layer LCP product uses a resin material with a low ratio of water and moisture absorption. In addition, because adhesive is not required to bond the layers, high reliability products with high water and perspiration resistance can be achieved.
These graphs show the change in the resonance frequency before and after the high-temperature and high-humidity test conducted on both an antenna made with a Multi-layer LCP product and a conventional antenna made with FPC.
We can confirm from the results that the characteristics of Multi-layer LCP product are much more stable than conventional FPC products. Such characteristics are one of the important parameters for products with mechanisms that resonate like antennas.