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The end-launch is used to connect a RF cable directly on pcb saving 2 connectors, it is used up to microwave frequencies with good performances. Some of our customers have put a very interesting question: up to what frequency is possible to use them? The manufacturers in fact are very vague in giving technical specifications and to answer these questions we have done some tests in our laboratory, here the results. They are still good even up to 10 GHz if assembled with semi-rigid cables, for a better impedance matching it is important to do a very good ground connection that must be abundant and well distributed on the p.c. board. The insertion loss are more or less similar to a double connection (for example pcb female plus cable male). In conclusion, it is possible to use them without any problem to the low microwave frequencies considering that the economic advantage is not negligible.
for types FER-01 and 02