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A ten-channel millimeter wave heterodyne phase measurement system is currently under construction. This system will be used for electron density measurement at the plasma experiment W7-AS. Main features are: twofold usage of each 160-GHz oscillator to excite both the transmitting signal to the plasma and the local oscillator (LO) signal for down conversion; the phase locked loops (PLLs) of each oscillator are coupled in a chain. This letter describes the millimeter wave part and the digital PLL circuits of that system. Test results of the first three channels, which are already running in the laboratory, are presented.

Additional information

Authors: GEIST T, Max-Plank-Institut für Plasmaphysik, Garching bei München (DE);HARTFUSS H-J, Max-Plank-Institut für Plasmaphysik, Garching bei München (DE)
Bibliographic Reference: Article: IEEE Microwave and Guided Wave Letters, Vol. 6 (1996) No. 6, pp. 235-237
Record Number: 199610890 / Last updated on: 1996-09-16
Original language: en
Available languages: en