The clearest evidence lies in the increasing number of competing quick-lock SMA (QMA) and Type N (QN) connector designs that have appeared on the market in the last five to six years. The difficulty arose when trying to find a locking mechanism that could be applied to a range of RF connectors because of the variation in the power-handling capability among different connector types.

The key to a successful new quick-lock design lay in its ability to satisfy these fundamental requirements.0/2. This is not surprising since the SMA and N have been optimized for performance over the years, and is another reason why when replacing the coupling mechanism it is essential to change the rest of the connector's inner construction as little as possible. In short, quick-lock connectors must begin to match the performance of the threaded connectors they were designed to replace. Rather than design a quick-locking mechanism around a specific connector, like the SMA or type N,

they sought to create a locking mechanism that could be applied across the board—to all connectors having a threaded interface.ZHOU WEIQUAN is an engineer with RF solutions provider Anoison Electronics (www.anoison.com) and IMS (www.com), but to achieve it, designers took an unusual tack. The SMA and Type N achieve high frequency bandwidths and continuous impedance with almost no reflection because of the rigid contact and zero clearance between their conductors.These efforts produced four basic design principles for a new spring lock coupling mechanism:

It has to Plug-In Terminal Blocks Companies; that is, the c onnector can be repeatedly snapped easily into place and still provide a strong holding force; Internal structural parameters of the original threaded connectors must be altered as little as possible; It must be simple, requiring very few raw materials; It must be able to provide the new quick-lock connector with electronic and mechanical performance equivalent to the threaded connector it is meant to replace.3 Series.The SnapN from Rosenberger (www. So, Anoison engineers researched, analyzed, and tested representative quick-lock connectors on the market, primarily: QMA (US patent #6,692,286); QN (US patent # 6,709,289); 1.rosenberger

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