Patent ID: 6867644
Filing Date: 2005-03-15
Classification: H03F

Abstract:
1. A method comprising: providing an amplifier including a first input, a second input, and an output; providing a cascode combiner with a virtual ground node to combine a number of different input signals in an output signal and isolate undesirable reactance characteristics of the input signals from the output signal; operatively coupling the cascode combiner to the amplifier to provide the output signal to the first input; and providing a plurality of semiconductor devices each including a first terminal, a second terminal, and a third terminal, the third terminal being a base or gate, the first terminal of each of said semiconductor devices being coupled together to form a common node; connecting a laser to the common node, the common node being between said laser and said first terminal of each of said semiconductor devices; directly connecting the output of said amplifier to the base or gate of each of said semiconductor devices; and controlling current flowing through the laser and the common node with said amplifier and said semiconductor devices, the current flow being divided to pass through the first terminal of each of said semiconductor devices.