A one-nanosecond X-band radio-frequency pulse generator using a Gunn diode oscillator and avalanche transistor modulator.
Hassinger, William Hugh
Sackman, George L.
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A simple circuit has been developed for producing extremely short X-band radio-frequency pulses using a Gunn-effect oscillator and avalanche transistor modulator. Construction techniques and some resulting difficulties are discussed. Representative pulses on the order of 1 nanosecond and 30 milliwatts at 8 . 5 gigahertz are presented. This circuit is intended for use in waveguide time -domain reflectometry. The nanosecond pulses offer a large improvement in resolution over previous pulse generation systems.
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