U.FL

2012-08-17T04:32:01Z

Unbitwise: /* IPX */ mark as advertisingish

{{Redirect|U.FL||UFL (disambiguation)}}

{{Infobox connector
|name = Hirose U.FL
|type = [[RF connector|RF coaxial connector]]
|image = [[Image:U.FL connector.jpg|250px]]
|logo =
|caption = U.FL connector in a DSL Router next to a [[match]] head for scale
|designer =
|design_date =
|manufacturer = [[Hirose Electric Group]]
|diameter = {{convert|1.9|mm|in|abbr=on}}<br /> or {{convert|2.4|mm|in|abbr=on}}
|width =
|height =
|electrical =
|earth =
|maximum_voltage =
|maximum_current =
|cable = [[Coaxial]]
|passband = Typically 0-6 GHz
|physical_connector =
}}

[[Image:RouterBoard 112 with U.FL-RSMA pigtail and R52 miniPCI Wi-Fi card.jpg|thumb|250px|An [[Embedded system|embedded]] RouterBoard 112 with U.FL-[[SMA connector|RSMA]] pigtail and R52 [[miniPCI]] [[Wi-Fi]] card.]]
'''U.FL''', is a miniature [[coaxial]] [[RF connector]] for high-frequency signals up to 6 GHz manufactured by [[Hirose Electric Group]] in Japan.<ref>[http://www.hirose.co.jp/cataloge_hp/e32119372.pdf Ultra Small Surface Mount Coaxial Connectors] - Low Profile 1.9mm or 2.4mm Mated Height
U.FL Series. Hirose data sheet.</ref> 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 [[Patch cable|pigtail]] with a high-quality 1.32 mm doubly shielded cable, which allows for a low-loss connection.

The male connectors are [[surface-mount technology|surface-mounted]] and soldered directly to the [[printed circuit board]]. They are designed to have an [[Electrical impedance|impedance]] of 50 ohms. The mated connection is only 2.5 mm high and takes 7.7 mm<sup>2</sup> of board space.

Much like many other electronic components, Hirose U.FL connectors are protected by patents<ref>[http://www.google.com/patents?id=1a0fAAAAEBAJ Surface-mounted, high-frequency coaxial connector.] US Patent 5180315 (1993)</ref> and trademarks. However, compatible connectors are on the market under names such as '''IPEX''', '''IPAX''', '''IPX''',<ref>[http://www.rfconnector.com/ipx-connectors.php Lighthorse Technologies INC catalog]</ref> '''MHF''', and '''AMC'''.<ref>[http://www.jefatech.com/category/.cable_assemblies.ufl/ JefaTech catalog]</ref> connectors.

TE connectivity (formerly Tyco Electronics) also makes a compatible connector, under the Ultra Miniature Coaxial Connector (UMCC)<ref>[http://www.te.com/catalog/feat/en/c/23958/2693 TE Connectivity product page]</ref> name.

==IPX==
{{Advert|section}}
IPX, is a microminiature [[RF connector|RF coaxial connector]] available from [[Lighthorse Technologies Inc]]. The connector operates in 50ohm RF applications up to 6Ghz frequencies at a AC 200V maximum.<ref>[http://www.rfconnector.com/ipx-connectors.php IPX product page]</ref> IPX connectors are among the smallest of [[RF connector|RF coaxial connectors]] occupying a [[Printed Circuit Board|PCB]] footprint of only 3mm squared and a mating height of 2.5mm.<ref>[http://www.rfconnector.com/sheets/IPXLM11GPB-113.pdf IPX datasheet]</ref> The male IPX receptacle is surface mounted onto the [[Printed Circuit Board|PCB]], while the female connector is often attached to a miniature [[Coaxial cable|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 [[PCI cards#Mini PCI|Mini PCI cards]] for laptop computers. The proprietary IPX connector is 100% compatible to all U.FL interfaces.

==References==
{{Reflist}}

{{RF Connectors Navbox}}

[[Category:Coaxial connectors]]

Hal Finney

2009-10-31T21:28:25Z

Unbitwise: Less Wrong has a space in its name

'''Hal Finney''' (born [[May 4]], [[1956]]) is a developer for [[PGP Corporation]], and was the 2nd developer hired after [[Phil Zimmerman]]. In his early career, he is credited as lead developer on several console games ([[Adventures of Tron]], [[Armor Ambush]], [[Astroblast]], Space Attack).<ref>[http://www.atariage.com/programmer_page.html?ProgrammerID=173 AtariAge - Programmers - Hal Finney]</ref>

During the early 1990s, in addition to being a regular poster on the cypherpunks listserv, Finney ran two [[anonymous remailers]].<ref>[http://firstmonday.org/htbin/cgiwrap/bin/ojs/index.php/fm/article/view/476/397 Prospects for Remailers]</ref>

In October, 2009, Finney announced on an essay on the blog Less Wrong that he's been diagnosed with [[Amyotrophic Lateral Sclerosis]].<ref>[http://lesswrong.com/lw/1ab/dying_outside/ Dying Outside]</ref>

== References ==
{{reflist}}

== External Links ==
* [http://finney.org/~hal/ Hal Finney home page]

[[Category:California Institute of Technology alumni]]
[[Category:Cypherpunks]]
[[Category:Living people]]

Wikipedia - Benutzerbeiträge [de]

U.FL

Hal Finney