INVESTIGATION OF SYNCHRONOUS-WAVE R-F TO D-C CONVERSION.
Triannual rept. no. 3, 1 Feb-31 May 67
UTAH UNIV SALT LAKE CITY MICROWAVE DEVICE AND PHYSICAL ELECTRONICS LAB
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A gun-collector tester, in which r-f power is simulated, was constructed and tested, and the experimental results compared with theoretical predictions. In the gun-collector tester, deflection plates were used to put orbital motion on the beam. The equations of motion for an electron in the deflection plate region were solved to obtain the ratio or orbital energy to longitudinal energy on the beam. Experimental tests were conducted to verify the correctness of the derived relation. Further experimental tests demonstrated that the conversion efficiency of the gun-collector tester is significantly greater than that of previous converter tubes, though still short of the theoretical capability. In gun tests, the perveance was found lower than expected, but a smooth beam could be obtained. It was concluded that the higher conversion efficiency can be attributed to two factors 1 The collector has been nickel-plated, thus reducing the problem of secondary emission and 2 the transition length of the magnetic field is longer, which for a vanishing magnetic field predicts the higher efficiency theoretically. The derived relation for ratio of orbital energy to longitudinal energy was also verified experimentally. Though gun perveance was low, corrective action is being taken to improve it somewhat. Author
- Electrical and Electronic Equipment
- Non-electrical Energy Conversion