Nokia Siemens Flexi 3x70W FXEA 1800MHz Base Station - Circuit Analysis (Part 2 of 3)
Nokia Siemens Flexi 3x70W FXEA 1800MHz Base Station - Circuit Analysis (Part 2 of 3)
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All high resolution pictures: http://kaizerpowerelectronics.dk/teardown/nokia-siemens-flexi-3x70w-fxea-1800mhz-base-station-circuit-analysis-part-2-of-3/
Discussion of teardown: https://highvoltageforum.net/index.php?topic=1113.0
Part 1 of 3: https://www.youtube.com/watch?v=Hempjpr1950
Teardown of a Nokia Siemens Networks Flexi Multiradio base station. This have been in service as a 3 antenna system for mobile telecommunications.
GSM/EDGE, WCDMA/HSPA and LTE capable. 3x70 Watt output power.
Up/Downconversion explained: https://youtu.be/qO127zY3voE?t=865
SAW filters explained: https://youtu.be/qO127zY3voE?t=963
Ceramic bandpass filter explained: https://youtu.be/h9-KhfQM3nI?t=729
Diplexer band pass filter explained: https://www.youtube.com/watch?v=HNaAQ3a7Duc
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#nokia #siemens #basestation #teardown #radio