VARIABLE IMPEDANCE TRANSFORMATION RATIO TRANSMISSION LINE TRANSFORMER

摘要

A transmission line transformer with a variable impedance transformation ratio is provided to generate multiple output powers by simply adjusting the impedance transformation ratio according to a kind of a load. Plural switches are inserted into a transmission line transformer, so that an impedance transformation ratio is varied. The transmission line transformer includes a primary transmission line(103) and a secondary transmission line(104). A first switch is arranged between the first transmission line and one of the secondary transmission lines. A second switch is arranged between the primary transmission line and the secondary transmission line. A third switch is arranged between the primary transmission line and a ground portion.