3740581 is referenced by 29 patents and cites 7 patents.

A precision high-speed, low impedance switching circuit is disclosed which is suitable for use with video or other high frequency analog signals. A J-FET is used as the switching element but is controlled by means of a novel circuit which minimizes channel impedance modulation effects. The gate of the J-FET is connected to the output of a control transistor, the input of the control transistor being connected to the input signal, thereby allowing the effective parasitic input capacity at the gate of the J-FET switch to be charged and discharged in accordance with the fluctuations of the input signal.

Title
Precision switching circuit for analog signals
Application Number
05/233,083
Publication Number
3740581
Application Date
March 8, 1972
Publication Date
June 19, 1973
Inventor
Pfiffner Harold J
Assignee
Hughes Aircraft Company
IPC
H03k 17/60
H03K 17/567
H03K 17/687
H03K 17/56
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