U.FL, is a miniature coaxial RF connector for high-frequency signals up to 6 GHz manufactured by Hirose Electric Group in Japan.[1] U.FL connectors are commonly used inside laptops and embedded systems to connect the Wi-Fi antenna to a Mini PCI card. Female U.FL connectors are not designed with reconnection in mind, and they are only rated for a few reconnects before replacement is needed. The female U.FL connectors are generally not sold separately, but rather as part of a pigtail with a high-quality 1.32 mm doubly-shielded cable, which allows for a low-loss connection.
The male connectors are surface-mounted and soldered directly to the printed circuit board. They are designed to have an impedance of 50 ohms. The mated connection is only 2.5 mm high and takes 7.7 mm2 of board space.
Much like many other electronic components, Hirose U.FL connectors are protected by patents[2] and trademarks. However, compatible connectors are on the market under names such as IPEX, IPAX, IPX.[3], MHF, and AMC.[4] connectors.
References
- ^ Ultra Small Surface Mount Coaxial Connectors - Low Profile 1.9mm or 2.4mm Mated Height U.FL Series. Hirose data sheet.
- ^ Surface-mounted, high-frequency coaxial connector. US Patent 5180315 (1993)
- ^ Lighthorse Technologies INC catalog
- ^ JefaTech catalog
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