Patent ID: 6606000
Filing Date: 2003-08-12
Classification: H01P

Abstract:
A radio-frequency amplifier comprising:a circuit substrate; a top electrode formed on the circuit substrate; an input-side slot line and an output-side slot line formed in the top electrode, each comprising a transmitting segment and a matching segment; and an active element mounted on the top electrode, which comprises terminals, wherein the active element is arranged for inputting and outputting signals via the transmitting segments and the matching segments, and wherein each of the input-side and output-side slot lines is bent at a given position to define the corresponding transmitting segment on one side of the given position and to define the matching segment on the other side of the given position, wherein each of the matching segments has a length corresponding to one-quarter of the wavelength of a signal to be amplified, and wherein each of the terminals of the active element is connected to a part of the top electrode that does not lie between the matching segments.