VOLTAGE CONTROLLED BROADBAND GENERATOR Russian patent published in 2008 - IPC H03K3/23 H03K3/11 

FIELD: electric engineering.

SUBSTANCE: invention may be used in frequency synthesising circuits, general-purpose generators and, particularly, in data recovery channels in compact disk (CD) players and digital versatile disk players (DVD). Technical result is achieved in broadband generator, which includes dynamic loads control circuit containing operational amplifier (OA) (9) and transistor (T) (10), voltage reference (VR) (24), current source (CS) (11) and broadband core (2), containing CS (12, 13), capacitor 1 (K) (14), T (16-19) by introduction of comparator (3) with T (20-23) and buffer amplifier (BA) (4). Besides, T (10, 16, 17) are arranged as p-channeled transistors. Capacitor 2 (15) parallel to capacitor 1 (14) is introduced into broadband generator core (2). In addition, CS control inputs (11, 12, 13) are linked with output 4 (8), inverting OA input (9), which is connected with output 2 (6) through VR (24). Buffer amplifier input (4) is linked with transistor T input (21) and T output (23) of comparator (3). Buffer amplifier output (4) is connected with output 3 (7).

EFFECT: maximum widening of retuning range, linearity of broadband generator retuning, decrease of power voltage, generation of output digital signal with standard logical levels.

1 dwg