Hello Everybody,
Good day.
We have developed a Duplexer to combine to two signals form two systems for
in-building application. The Dupluxer (or combiner) has specifications of 1.7dB
insertion loss and >60dB isolation. When we set up the system and power on the
two systems, the combiner works fine.
However, we notice that the noise level (up link) on the two systems will
slowly increase, and until 3~4 days later, the noise level has increased to
-80~-60dBm level. We then power down the systems for 3 hours, and power them up
again. The systems work fine again.
Anybody could help?
Best Regards,
Kent
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