Patent ID: 6016076
Filing Date: 2000-01-18
Classification: H03F

Abstract:
An apparatus, comprising:a first circuit having a first input terminal and a first output terminal, the first circuit including first, second and third branches coupled in electrical parallel between the first input and output terminals, the first branch having a first diode and a first variable load coupled in electrical series, the second branch having a second diode and a second variable load coupled in electrical series, and the third branch having a third variable load coupled in electrical series; anda second circuit having a second input terminal, a second output terminal and a low pass filter coupled between the second input terminal and the second output terminal, the second circuit including fourth, fifth and sixth branches colipled in electrical parallel between the second input and output terminals, the fourth branch having a third diode and a fourth variable load coupled in electrical series, the fifth branch having a fourth diode and fifth variable load coupled in electrical series, and the sixth branch having a sixth variable load coupled in electrical series, the first output terminal being coupled to the second input terminal.