| 摘要 |
The invention relates to a circuit arrangement (30, 40, 70, 80, 90) of a low-noise linear input amplifier comprising a parallel connection of a common-base connection (20) and a common-emitter connection (30), wherein the emitters of two first transistors (Q3, Q4) are coupled to one another and the bases of two second transistors (Q1, Q2) are coupled to one another, the collectors are connected in parallel with the output and the source voltage (VG) is coupled to the emitters of the second transistors (Q1, Q2) and to the bases of the first transistors (Q3, Q4), wherein a linearization of the output current (OUTLNA 1, 2) as a function of the source voltage (VG) is achieved by a linearization of the transfer function, such as hyperbolic tangent function, for example, of the first and second transistors (Q1, Q2, Q3, Q4). |
