range from a cost viewpoint as well as having minimal spectral impact (lies in the industrial microwave band) and yielding a feasible system with respect to potential constraints. To efficiently concentrate the transmitted power in the main lobe of such a system, it is necessary to maintain very precise amplitude and phase distributions over the transmitter aperture. Static phase and amplitude errors not only degrade transmission efficiency, they also raise the sidelobe level and cause pointing errors of the maintain lobe. With a system such as this, which typically would operate in the 5 GW range, the uncertainty in beam pointing and sidelobe levels can be critical. Therefore it is appropriate to assess the expected degradation in efficiency, the likelihood of the sidelobes exceeding some predetermined level and the expected pointing error. The purpose of this paper is to present preliminary estimates of these parameters and relate them to the technical requirements of the system.
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