Circuit for simultaneous amplitude modulation of a number of signals
First Claim
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1. A method for simultaneously imposing a single modulating signal on a number of constant frequency carriers, comprising the steps of:
- a) applying the single modulating signal and all of the carriers to a circuit that produces sidebands corresponding to all of the carriers but which does not pass any of the carriers;
b) combining in a linear circuit the sidebands thus produced with signals proportional to the carriers to obtain a combined signal equivalent to a signal that would result from modulating separately each of the carriers by the single modulating signal and then combining the modulated carriers.
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Abstract
A method for simultaneously imposing a single modulating signal on a number of constant frequency carriers includes applying the single modulating signal and all of the carriers to a doubly-balanced mixer circuit that produces sideband signals that are uncontaminated by the carriers. The sideband signals thus produced are then combined with signals proportional to the carriers in a linear circuit to obtain an output signal equivalent to a signal that would result from combining separately modulated carriers.
113 Citations
3 Claims
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1. A method for simultaneously imposing a single modulating signal on a number of constant frequency carriers, comprising the steps of:
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a) applying the single modulating signal and all of the carriers to a circuit that produces sidebands corresponding to all of the carriers but which does not pass any of the carriers; b) combining in a linear circuit the sidebands thus produced with signals proportional to the carriers to obtain a combined signal equivalent to a signal that would result from modulating separately each of the carriers by the single modulating signal and then combining the modulated carriers. - View Dependent Claims (2, 3)
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Current AssigneeMartinez Barbara A, Martinez Michael G
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Original AssigneeJames K. Palmer
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InventorsPalmer, James K.
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Primary Examiner(s)MIS, DAVID C
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Application NumberUS08/151,736Time in Patent Office610 DaysField of Search332/151, 332/152, 332/153, 332/154, 332/172, 332/178, 332/167, 332/168, 332/169, 332/170, 332/149, 455/59, 455/103, 455/108, 455/323, 455/326, 455/327, 455/328, 455/333US Class Current332/151CPC Class CodesH03C 1/58 comprising diodes
