Semiconductor relay for transmitting high frequency signals

Details Semiconductor relay for transmitting high frequency signals Semiconductor relay for transmitting high frequency signals

1994-07-25

1996-09-24

Nelms, David C.

Miscellaneous active electrical nonlinear devices, circuits, and

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327369, 327389, 327427, 327436, 250214SW, 250551, H03K 342, H03K 1792, H03K 17687, G02B 2700

Patent

active

055594662

ABSTRACT:
A semiconductor relay has two output MOSFET pairs, each of which is series-connected with the other. Each MOSFET pair is comprised of two MOSFETs series-connected oppositely to each other, and these MOSFETs are controlled to turn on or off simultaneously. The semiconductor relay further includes a switch, which is inserted between the ground and the junction of the two MOSFET pairs. When these MOSFETs are in an off condition, said switch is closed in order to release electric charges accumulated on said MOSFETs and to increase the off-resistance of this semiconductor relay. On the other hand, when the MOSFETs are in an on condition, said switch is opened so as to connect both MOSFET pairs in series. As a result, a semiconductor relay having a high off-resistance can be obtained without increasing the on-resistance.

REFERENCES:
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patent: 4665316 (1987-05-01), Hodges
patent: 4742380 (1988-05-01), Chang et al.
patent: 4864126 (1989-09-01), Walters et al.
patent: 5045774 (1991-09-01), Bromberg
patent: 5138177 (1992-08-01), Morgan et al.
patent: 5146100 (1992-09-01), Banaska
patent: 5298817 (1994-03-01), Banak et al.
Bill Gledhill, "It Pays to be Discrete," Electronic Engineering, vol. 43, No. 519, May 1971.

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