Transmission of electronic information by pulse position modulat

Details Transmission of electronic information by pulse position modulat Transmission of electronic information by pulse position modulat

1994-11-10

1996-12-17

Tse, Young T.

Pulse or digital communications

Pulse position, frequency, or spacing modulation

370213, 332112, 327 31, H03K 704

Patent

active

055861458

ABSTRACT:
A method and apparatus are shown for generating and transmitting very short and widely separated high frequency sine-wave pulses of electromagnetic energy into space. A transistor, a charging capacitor, and an inductor are coupled into a first series loop path to form a discharge circuit. A bias voltage source, the same charging capacitor, and a charging resistor are coupled into a second series loop path to form a recharging circuit. The bias voltage source is selected to be capable of biasing the forward conduction path of the transistor near its breakdown condition. An original information signal is sampled upon each occurrence of a periodic reference signal, and the transistor is then triggered into its breakdown or avalanche mode. The starting times of successive transmitted pulses are modified in accordance with a pulse position modulation protocol.

REFERENCES:
patent: 3271689 (1966-09-01), Hodder
patent: 3274497 (1966-09-01), Zimmerman
patent: 3380003 (1968-04-01), Bemmann
patent: 3898589 (1975-08-01), Tustison
patent: 4641317 (1987-02-01), Fullerton
patent: 4743906 (1988-05-01), Fullerton
patent: 4813057 (1989-03-01), Fullerton
patent: 4979186 (1990-12-01), Fullerton
patent: 5363108 (1994-11-01), Fullerton

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