Figure 5-14. The average DC power output per element in a set of elements is plotted as a function of the radial distance of the set. The resulting points of data may be easily fitted to a Gaussian curve which is the approximate power density distribution in the beam. Figure 5-15. Experimentally observed power output of the 5-element foreplane structure is compared with predicted power based upon power picked up by remaining elements in sets whose total number of elements included elements in the foreplane structure. Data set No. 1 and No. 2 were taken at different times. Inconsistency of data at the '’relative incident microwave power” value of 1. 0 is caused by difficulty in resetting the incident microwave power level from one set of measurements to another. 96
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