Title :
Six-port self-calibration based on active loads synthesis
Author :
Yakabe, Toshiyuki ; Ghannouchi, Fadhel M. ; Eid, Eid E. ; Fujii, Kohei ; Yabe, Hatsuo
Author_Institution :
Dept. of Inf. & Commun. Eng., Univ. of Electro-Communications, Tokyo, Japan
fDate :
4/1/2002 12:00:00 AM
Abstract :
An automatic method for self-calibrating six-port reflectometers is reported in this paper. It is based on the use of an active impedance synthesis system. This self-calibration method allows a completely autonomous operation, reduces measurement errors caused by the frequent connecting and disconnecting of calibration standards, and is suitable for low and high frequencies, where sliding shorts are difficult to manufacture. In addition, it simplifies operation of six-port reflectometers to nonspecialized users. The experimented impedance synthesis presented relies on an in-phase and quadrature vector modulator, and the entire system is computer controlled
Keywords :
calibration; computerised instrumentation; microwave reflectometry; multiport networks; network analysers; reflectometers; 2 to 8 GHz; Smith chart; active impedance synthesis system; active loads synthesis; automatic method; computer controlled system; controllable vector modulator; high frequencies; in-phase modulator; low frequencies; quadrature vector modulator; reduced measurement errors; six-port reflectometers; six-port self-calibration; Antennas and propagation; Circuit synthesis; Control system synthesis; Frequency; Impedance; Maxwell equations; Measurement errors; Measurement standards; Tellurium; Time domain analysis;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
