QMA and QN connector

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QMA and QN connector
QMAconnector.jpg
QMA connector
Type RF coaxial connector
Designer Quick Lock Formula Alliance
Designed 2003
Manufacturer Various
Cable Coaxial
Passband Typically 0-6 GHz

QMA and QN connectors are quick-connect RF connectors that were designed to replace the widely used SMA (used in low power transmissions; DC–18 GHz) and Type N (used in medium power transmissions; DC–11 GHz) connectors. The connectors have been available since 2003. The connector family was created by the Quick Lock Formula Alliance, which consists of Huber+Suhner, Radiall, Rosenberger Hochfrequenztechnik, and Amphenol.

Design goals[edit]

The design had three main goals:

  1. replace the traditional threaded connection of SMA and N with a snap-fastening to allow for faster mating and de-mating and eliminate the need for a torque wrench
  2. decrease the overall size of the connector while still matching the electronic performance and reliability of their extremely popular predecessors
  3. allow for 360° cable rotation after installation in order to make cable routing easier.

Applications[edit]

Common applications for the QMA and QN connectors include cellular base stations, antennas, and various defense applications. Since an industry standard for quick-locking SMA and N connectors has yet to be established, varying designs are currently being manufactured.

Mini-QMA connector[edit]

The Mini-QMA is a quick-locking SMA (QMA) replacement that was designed with panel mount and printed circuit board (PCB) applications specifically in mind; the length of the Mini-QMA being the shortest of any QMA connector on the market to date. This miniaturization, in addition to its snap-on coupling mechanism and electronic performance equivalent to SMA up to 18 GHz, make the Mini-QMA an excellent choice for applications in which space is limited but performance is required.

References[edit]

Mini-QMA[edit]