PIN diode modulator

Details PIN diode modulator PIN diode modulator

1983-07-08

1986-04-08

Buczinski, S. C.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358114, 455249, H04K 102, H04N 7167

Patent

active

045816379

ABSTRACT:
A sine wave modulator for decoding a sine wave encoded television signal includes a passive attenuation network comprising a pi-arrangement of PIN diodes. The encoded signal is supplied to the input port and the decoded signal is taken from the output port. A common bias arrangement for the series-shunt-connected PIN diodes results in the impedance of one PIN diode changing oppositely to the impedance of the other PIN diodes such that the impedance presented to the input and output ports remains substantially constant.

REFERENCES:
patent: 3518585 (1970-06-01), Wilcox
patent: 4019160 (1977-04-01), Kam
patent: 4024575 (1977-05-01), Harney et al.
patent: 4511919 (1985-04-01), Forgey et al.

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