harmonics can be particularly harmful if it particularly falls in frequency bands occupied by other rf sensitive electronic systems. This report will consider some of the electromagnetic compatibility problems associated with SPS. The study described here is limited to consumer oriented devices such as TV, AM radio, FM/FM stereo, and FM land mobile radio. The report also considers potential electromagnetic interference problems to medical electronics devices such as pacemakers. 2. DESCRIPTION OF SPS The following material briefly describes some of the proposed characteristics of SPS. These characteristics, as shown in Table 1, are the results of studies by Boeing Aerospace Company and Rockwell International (U.S. Department of Energy and National Aeronautics and Space Administration, 1978). Basically, the orbiting portion of SPS is a 10.4 x 5.2 km array of solar cells that converts solar energy to de. The de is then converted to cw microwave energy and beamed to earth by a 1 km diameter phased antenna array. Proper phasing of the microwave beam at the earth’s surface is maintained by a special retrodirective pilot signal that is transmitted from the earth antenna to the satellite. Rectification of microwave energy at the earth antenna (rectenna) is accomplished by illuminating panels of multiple half-wave dipoles that are connected to diodes for direct conversion of Table 1. Characteristics of SPS
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