UHF-Satcom.com - Marconi TFT power sensors / General Microwave TFT power sensors (17/02/2012 22:26:22 -0000)
The Marconi TFT and General Microwave TFT power sensors are based on a thermo-electric calorimeter using bismuth and nichrome thermocouples. There are a few microscope photos of the actual sensor elements below in various states.
(below) Marconi TFT 6421 power head 100mW DC-12GHz
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(below) Marconi TFT 6420 power head 10mW DC-12GHz
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(below) Marconi TFT 6440N power head 10mW DC-18GHz
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