1. A method of manufacturing a high-frequency assembly including a plurality of components, at least one of which is frequency-specific, using an automatic assembly apparatus, the method comprising: placing a plurality of components on a high-frequency assembly using a placing apparatus of an automatic assembly apparatus; identifying a frequency-encoding feature on a frequency-specific component prior to gripping the frequency-specific component with the placing apparatus, the frequency-encoding feature indicating an operating frequency of the frequency-specific component; accepting the frequency-specific component for connection to the high-frequency assembly if the frequency-encoding feature indicates that the frequency-specific component is a correct component for the assembly; and rejecting the frequency-specific component for connection to the high-frequency assembly if the frequency-encoding feature indicates that the frequency-specific component is not the correct component for the assembly.