Patent ID: 6265937
Filing Date: 2001-07-24
Classification: H01L,H01P,H03F

Abstract:
A push-pull amplifier for amplifying a radio frequency signal comprising:a substrate having a planar substrate surface;a first coplanar transmission line positioned on the substrate surface and having first and second conductors with the first conductor conducting the signal in phase opposition relative to the second conductor;a second coplanar transmission line also positioned on the substrate surface, connected electrically in parallel with the first transmission line, and having third and fourth conductors, the third conductor conducting the signal in phase opposition relative to the fourth conductor;first, second, third and fourth active devices having respective first, second, third and fourth input terminals and respective first, second, third and fourth output terminals, the current flowing through the output terminal of an active device depending upon the signal applied to the input terminal, the first, second, third and fourth input terminals or the first, second, third and fourth output terminals being connected, respectively, to the first, second, third and fourth conductors;whereby the first and second active devices are connected in push-pull configuration, and the third and fourth active devices are connected in push-pull configuration.