Patent ID: 6636119
Filing Date: 2003-10-21
Classification: H03F

Abstract:
An integrated circuit chip, comprising:an input signal path; an amplified output signal path; a DC bias voltage path; a reference voltage path; a ground path; a radio frequency cascode power amplifier, including: one or more on-chip parallel-plate capacitors, each capacitor having a first plate connected to a different respective interconnect terminal for communication through an inductive element to a ground path on a circuit board and each capacitor having a second plate; a first transistor with a first transistor control terminal controlling the current between a first transistor first terminal and a first transistor second terminal with the first transistor first terminal connected to the ground path and the first transistor control terminal connected to the input signal path for receiving a radio frequency input signal; and a second transistor with a second transistor control terminal controlling the current between a second transistor first terminal and a second transistor second terminal with the second transistor first terminal connected to the first transistor second terminal, the second transistor second terminal connected to the amplified output signal path and connected to the reference voltage path through a pull-up inductor, and the second transistor control terminal connected to the second plates of the on-chip parallel-plate capacitors and connected to the bias voltage path through a current limiting element.