LIST OF FIGURES Page Figure 1. The coupling coefficient q. of a circular aperture as a function of the diameter d/x. Shown are the results of two different theoretical treatments. 8 Figure 2. E,-field distribution in circular and square apertures (d £ 0.1 x). 8 Figure 3. Spatial interference pattern due to a reflected wave. 11 Figure 4. Two examples of field patterns between two opposing plate reflectors for the case that two space harmonics superimpose. 11 Figure 5. Two-dimensional metal reflector arrangements with the potential of supporting multiple reflections. 16 Figure 6. Attenuation rate a of various building materials at f = 3 GHz as a function of the water content. 19 Figure 7. Examples of open resonator geometries. 23 Figure 8. Examples of measured free space SWR (interference patterns). 25 Figure 9. Probability distribution of hot spot occurrence inside single story wood frame house with metal sidings exposed to a 2.57 GHz satellite signal. 26 Figure A-l. Proposed SPS transmitted power density pattern. 37 Figure A-2. Microwave power distribution on rectenna at equator. 37
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