At the SMA connector’s inception, the operating frequency didn’t exceed 12 GHz. As the design matured, the maximum operating frequency was pushed up to 18 GHz and eventually higher. As higher operating frequencies have become common over the past several decades, other interfaces, most of which are considered precision interfaces designed for laboratory use, have been introduced to handle signal transmission at frequencies far exceeding 18 GHz. However, the SMA connector design can be optimized to extend the maximum operating frequency of the interface to offer a reliable and cost-effective solution to the higher frequency requirements of modern systems.
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