Variable-bias circuit with HF transmission path

Details Variable-bias circuit with HF transmission path Variable-bias circuit with HF transmission path

1985-04-15

1987-01-27

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307320, 307304, H03K 301, H03K 3353

Patent

active

046396179

ABSTRACT:
On an output terminal (12) of a variable-bias circuit with an HF transmission path a bias voltage (Vo) is produced which is variable in response to variations of a d.c. control voltage (Vc) applied to a control terminal (13). The circuit transmits an HF signal from an input terminal (14) to the output terminal (12) with a low attenuation. In accordance with the invention this circuit comprises a field-effect transistor (11) whose source (S1) is driven by a constant-current generator (22) and is connected to the output terminal (12), the grate (G1) of the transistor (11) being connected to the control terminal (13) by a resistor (R1) and to the source (S1) of the transistor (11) by a capacitive element (16).

REFERENCES:
patent: 3539834 (1970-11-01), Stopper
patent: 3621284 (1971-11-01), Cluett
Radio and Television Engineer's Reference Book, pp. I48-I63.

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