K&L Microwave Inc., part of Dover Corporation’s Microwave Products Group®, introduces the bandpass/bandstop diplexer, which efficiently and accurately assists the out-of-band emission levels measurements of wireless basestations (BS). These measurements are conducted during the Federal Communications Commission (FCC) certification process.
"Most current methods of measurement are cumbersome and require multiple connections and disconnections," says Rafi Hershtig, vice president of advanced engineering and R&D for K&L Microwave. "The new bandpass/bandstop diplexer offers a broadband solution that requires just one set of quick connections. The simplicity of our module eliminates possible IM contributions from redundant circuitry otherwise used." With the bandpass/bandstop filter’s simple set-up, the output of the BS is fed into the common port of the diplexer. While the IM products are measured through the bandstop port, the main carriers pass through the bandpass port. For each communication band the associated diplexer has been developed. Additionally, the IM products are measured from DC to 3.5 GHz in just one measurement.
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