The transmitting antenna therefore will tend to be smaller as its manufacturing and orbital transportation-assembly costs, C_ + COK, increase and ' as the receiving antenna costs, C , decrease. To examine the specific cost relationships for a given value of A as n and y are varied, we that see that Since for any taper, y increases with n (Figure 12-3), the lowest cost s SPS will be found by a tradeoff between orbital specific costs, through C^, and the ground antenna specific cost, C^. 12.2.2 EFFICIENCY, WEIGHT AND COST The efficiency, weight and cost values for the MPTS used in the parametric study were later revised in some cases, as noted in paragraph 12. 3. 1 but the trends remain valid as bases for selection of power levels and operating frequency. The efficiencies used at a freauencv of 2.45 GHz were:
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