Patent ID: 8019306
Filing Date: 2011-09-13
Classification: H03F

Abstract:
1. A wide-band amplifier comprising: an input terminal configured to receive an input voltage; an output terminal configured to provide an amplified output voltage; an amplification device connected between the input terminal and the output terminal, an output of the amplification device being directly connected to the output terminal; an LC parallel resonant circuit connected between the output terminal and a ground terminal in parallel to the amplification device; and an LCR series resonant circuit connected between the output terminal and the ground terminal in parallel to the amplification device and the LC parallel resonant circuit, wherein the amplification device includes a first MOS-FET transistor having a drain connected to a source of a second MOS-FET transistor, a drain of the second MOS-FET transistor being connected to the output terminal, a source of the first MOS-FET transistor being connected to the input terminal, a gate of the first MOS-FET transistor being connected to a first bias terminal via a bias resistor and to the ground terminal via a first bias capacitor, the gate of the second MOS-FET transistor being connected to a second bias terminal and to the ground terminal via a second bias capacitor.