Wave transmission lines and networks – Long line elements and components – Switch
Patent
1987-04-09
1988-07-26
Gensler, Paul
Wave transmission lines and networks
Long line elements and components
Switch
307259, H03H 700, H03K 1774
Patent
active
047603631
ABSTRACT:
A T-network with a capacitor in the shunt branch and similarly poled diodes in the series branches provides an electronic switch for the IF signals in a VHF receiver exhibiting 58 dB of attenuation in the block condition and negligible attenuation when the diodes are conducting. The resistance across the input of the IF amplifier and, if necessary, a resistance in the switching voltage path, determine the amount of current through the diodes when they are conducting under application of the switching voltage. Low pass filtering in the switching voltage leads and blocking capacitors in the signal connections of the switch restrict signal and switching voltages to their respective paths. Applying a positive potential to one switching terminal closes the switch and applying it to the other switching terminal opens it.
REFERENCES:
patent: 3179816 (1965-04-01), Hall et al.
patent: 3503015 (1970-03-01), Coraccio et al.
patent: 4668882 (1987-05-01), Matsuura
Blaupunkt-Werke GmbH
Gensler Paul
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