BROADBAND TRANSMITTER TECHNIQUES.
SYLVANIA ELECTRONIC SYSTEMS-WEST MOUNTAIN VIEW CALIF ELECTRONIC DEFENSE LABS
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Three techniques for developing power levels in excess of 100-watts over wide bandwidths in the VHF frequency range were investigated 1 direct amplification at power output, 2 generation of power at lower frequency and use of passive multiplyers, and 3 use of active multiplying devices to provide both amplification and frequency multiplication. Third technique was most successful and an amplifier having 100-watt, at 100-MHz, with 20 bandwidth was constructed. However, limiting factor was impedance match at the input to the high power transistor. Recommend efforts be directed to computer techniques to affect impedance match.
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