Title: Frequency translation circuits

Abstract: A frequency translator, for translating a signal at frequency f into the F-f and F+f bands where F is a carrier, consisting mainly of an integrated circuit comprising two bidirectional switches controlled by two 180.degree. out of phase square signals at the carrier frequency, each switch being supplied from one output of a d.c. voltage source fed with said carrier equal respectively to the absolute maximum and minimum values of the square wave, said signal being applied to said bidirectional switches either directly or through a transformer. In a preferred embodiment the switches consist of a C-MOS integrated circuit.

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Other info:

Inventors: Knapp-Ziller, Michel (Paris, FR)
Pasquer, Loic (Paris, FR)

Application Number: 795142
Filing Date: 1977-05-09
Publication_date: 1979-01-23
Assignee: Societe Lignes Telegraphiques et Telephoniques (Paris, FR)
Primary Class(es): 327/113 327/124
Other Classes:
US Patent Ref:

3495097	Feb, 1970	Abramson et al.	307/240.
3675043	Jul, 1972	Bell	307/251.
3705313	Dec, 1972	Ohsawa	307/240.
3845328	Oct, 1974	Hollingsworth	307/255.
3989955	Nov, 1976	Suzuki	307/208.

Other Refs:
Primary Examiner: Heyman, John S.
Assistant Examiner:
Attorney: Kemon & Estabrook