Hirose U.FL
 U.FL connector in a DSL Router next to a match head for scale |
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| Type | RF coaxial connector | ||
|---|---|---|---|
| Production history | |||
| Manufacturer | Hirose Electric Group | ||
| General specifications | |||
| Diameter | 1.9 mm (0.075 in) or 2.4 mm (0.094 in) |
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| Cable | Coaxial | ||
| Passband | Typically 0-6 GHz | ||
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.
TE connectivity (formerly Tyco Electronics) also makes a compatible connector, under the Ultra Miniature Coaxial Connector (UMCC)[5] name.
[edit] IPX
IPX, is a microminiature RF coaxial connector available from Lighthorse Technologies Inc. The connector operates in 50ohm RF applications up to 6Ghz frequencies at a AC 200V maximum.[6] IPX connectors are among the smallest of RF coaxial connectors occupying a PCB footprint of only 3mm squared and a mating height of 2.5mm.[7] The male IPX receptacle is surface mounted onto the PCB, while the female connector is often attached to a miniature coax cable with a diameter no larger than 1.83mm. IPX connectors are commonly used in applications where space is of critical concern, most often Mini PCI cards for laptop computers. The proprietary IPX connector is 100% compatible to all U.FL interfaces.
[edit] 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
- ^ TE Connectivity product page
- ^ IPX product page
- ^ IPX datasheet
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