| 摘要 |
<p>A class A amplifier (1) comprises at least a first transistor (11) and a second (12) transistor, each transistor having a first main electrode, a second main electrode and a control terminal; a first reference terminal (17) and a second reference terminal (18); a first coil (13) coupled between the first main electrode of the first transistor (11) and the first reference terminal (17); a second coil (14) coupled between the first main electrode of the second transistor (12) and the first reference terminal (17); a current source (16) coupled between the second main electrode of the first transistor (11) and the second reference terminal (18). A second main electrode of the second transistor (12) is coupled to the second main electrode of the first transistor (11). At least one of the first main electrodes is coupled to an output (23,24) of the class A amplifier (1). At least one of the control electrodes is coupled to an input (21,22) of the class A amplifier (1), and the first (13) and the second coil (14) are inductively coupled (15) to each other.</p> |
