Waveguide suppliers are truly the “old-timers” of the RF/microwave industry, selling a transmission-line technology that most users would rather replace with something newer. For all its bulk compared to an alternative, such as a coaxial cable with connectors, waveguide is still the lowest-loss way to get a high-frequency electromagnetic (EM) signal from point A to point B. And it does get smaller as the frequency pushes higher...
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