Pulse transmitter for terminating reflected waves

Details Pulse transmitter for terminating reflected waves Pulse transmitter for terminating reflected waves

1993-12-01

1995-11-21

Pihulic, Daniel T.

Communications: directive radio wave systems and devices (e.g.,

With particular circuit

For pulse modulation

367903, G01S 1300

Patent

active

054691745

ABSTRACT:
A pulse transmitter for terminating reflected waves is disclosed which utilizes a series switched charged line pulse generator with a shunt element that is switched into the circuit immediately after the pulse is launched into an output line. The shunt element terminates any reflected wave so that it does not go back into the output line. The shunt element is formed by an optically controlled PIN diode coupled in series to a resistor which allows the circuitry to turn on fast and to handle high voltage pulses. The shunt element can be connected to either the input end of the charge line for circuitry embodiments in which the series switch stays closed or the shunt element can be connected at the output side of the series switch for embodiments in which the series switch opens after the pulse is formed such as, for example, where an avalanche switch is used.

REFERENCES:
patent: 3774112 (1973-11-01), Panico
patent: 3982425 (1976-09-01), McLain
patent: 4025924 (1977-05-01), Luedtke et al.
patent: 4486867 (1984-12-01), Hill
patent: 5199299 (1993-04-01), Hughes et al.

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