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Six-port reflectometers based on standard four-port couplers are inexpensive but the designs reported thus far in the literature are either for narrow-band operation or do not meet the optimum design specifications. The analysis, design and tests conducted on three modified four-port structures have resulted in three prototype couplers for use as the building blocks of three prototype six-port reflectometers that are capable of meeting the optimum performance requirements.

Produktbeschreibung
Six-port reflectometers based on standard four-port couplers are inexpensive but the designs reported thus far in the literature are either for narrow-band operation or do not meet the optimum design specifications. The analysis, design and tests conducted on three modified four-port structures have resulted in three prototype couplers for use as the building blocks of three prototype six-port reflectometers that are capable of meeting the optimum performance requirements.
Autorenporträt
J.J. Yao received his B.S. and M.S. degrees in 1996 and 1999respectively from HUST, Wuhan, P.R. China, and PhD degree in 2009from NUS, Singapore. He worked on RF circuit design for fouryears with Huawei Technologies; and 3 years on PA designs with STElectronics. He is currently a research fellow of I2R, A*STAR,Singapore