This paper presents a new structure for a six-port reflectometer which due to its simplicity can be implemented very easily in monolithic microwave integrated-circuit (MMIC) technology. It uses nonmatched diode detectors with a high input impedance which are placed around a phase shifter in conjunction with a power divider for the reference detector. The circuit has been fabricated using the F20 GaAs process of the GEC Marconi foundry and operates between 1.3 GHz and 3.0 GHz.
Frank Wiedmann, Bernard Huyart, Eric Bergeault, Louis Jallet, "New structure for a six-port reflectometer in monolithic microwave integrated-circuit technology," IEEE Transactions on Instrumentation and Measurement, vol. 46, no. 2, pp. 527-530, April 1997.
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