H - Electricity – 04 – J
Patent
H - Electricity
04
J
363/7, 328/97
H04J 1/06 (2006.01)
Patent
CA 1146287
D-22,366 CARRIER FREQUENCY SPECTRUM GENERATOR USING LOGIC LEVEL INPUT PULSES by Lawrence E. Getgen ABSTRACT OF THE DISCLOSURE An inverter accepts the true form of a high-frequency signal at its input and provides the complement thereof at its output. The true form is applied to a first input of a first NAND-gate and the complementary form is applied to a first input of a second NAND-gate. A second signal, having a repetition rate which is set, for example, by the channel spacing required in an FDM carrier system, is applied to the second inputs of said first and second NAND-gates. The second signal is thereby alternately switched between the first and second output terminals of said NAND-gates at a rate equal to the frequency of the high-frequency signal. The first and second output terminals of said NAND-gates are connected to the first and second end terminals, respectively, of the primary winding of an output transformer. The end terminals of the secondary winding of said transformer are connected to the load or utilization device. The output signal comprises a spectrum having a sin x/x envelope centered at the high-frequency wc. Spectral rays occur at the high-frequency wc and are disposed on either side of wc at intervals equal in frequency to the pulse rate of said second signal.
365811
Gte Automatic Electric Incorporated
R. William Wray & Associates
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