Title :
Output control of the line type pulse modulator by a duration of “on” state of an additional switch tube
Author :
Nakatsuka, Kohki
Author_Institution :
Dept. of Electr. Eng., Hiroshima Inst. of Technol., Japan
fDate :
10/1/1996 12:00:00 AM
Abstract :
A technique is presented that enables rapid control of the output peak voltage of the line-type pulse modulator by changing the pulsewidth of the gate voltage applied to an additional switch tube in parallel with the thyratron. The current and voltage characteristics of the pulse modulator with an additional switch tube are analyzed to establish design rules. It is shown by a numerical example that output pulse voltages of a modulator with 5 kV DC source can be changed from 5 kV to 15 kV during 1 ms by changing the gate pulsewidth from 0 to 0.693 ms. This technique can be applied to the amplitude modulation or the rapid regulation of output pulses of radars and similar equipment
Keywords :
modulators; pulse amplitude modulation; radar transmitters; voltage control; 0 to 0.693 ms; 5 to 15 kV; PAM; amplitude modulation; gate voltage pulsewidth; line type pulse modulator; onstate duration; output control; output peak voltage; radar; rapid regulation; switch tube; thyratron based circuit; Capacitance; Circuits; Inductance; Pulse modulation; Radar; Space vector pulse width modulation; Switches; Thyratrons; Voltage control; Zero voltage switching;
Journal_Title :
Circuits and Systems I: Fundamental Theory and Applications, IEEE Transactions on
