MEDIUM-POWER, LOW-NOISE TUBE DEVELOPMENT.
Interim development rept. no. 11, phase 2, 1 Sep-30 Nov 63.
MICROWAVE ELECTRONICS PALO ALTO CALIF
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During this quarter, the prototype design of the vacuum envelope and the PPM package unit was completed. Ten vacuum envelopes were built and tested. Operation of the tube was brought to within 1 db of the required 2-watt gain compression specification of 1 db. A backward wave oscillation prevents beam currents in excess of 18 milliamperes thereby limiting this gain compression. One tube, using vacuum envelope 40 was put through temperature and vibration environments. Author