Patent ID: 8004363

Claim:
A wideband low-noise amplifier wherein an input terminal is connected to a base of a first transistor, one terminal of a first passive element, and one terminal of a third passive element, wherein an emitter of the first transistor is connected directly to ground, a collector of the first transistor is connected to an output terminal, a base of a second transistor, one terminal of a capacitor, and one terminal of a second passive element, wherein an other terminal of the first passive element is connected to an other terminal of the capacitor, an emitter of the second transistor is connected to an other terminal of the third passive element, and a power terminal is connected to a collector of the second transistor and an other terminal of the second passive element, and wherein an impedance of the third passive element is determined based on an impedance of the first transistor whose emitter size is determined to suit a desired saturation level of amplification, thus establishing input impedance matching.