of the diode. From Fig. 6, it is seen that the smaller 6S is, the larger the range of D/Dd is. This shows that we have the higher degree of freedom of design at high latitudes. Conclusions We have discussed the inland rectenna and a hogline type rectenna with a CMSA. Several expressions were obtained which are useful for designing the modified hogline rectenna. REFERENCES [1] Andryczyk, R., Folders, P., Chester, J. & Kaupang, B.M. (1979) Solar power satellite ground stations, IEEE Spectrum, 16, 7, pp. 51-55 (July). [2] Freeman, J.W. et al. (1980) Solar Power Satellite Offshore Rectenna Study (NASA Contractor Report 3348, Rice University, Houston, Texas, November; Prepared for Marshall Space Flight Center under Contract NAS8-33O23). [3] Gutmann, R.J. & Borrego, J.M. (1978) Solar Power Satellite Rectenna Design Study: Directional receiving elements and parallel-series combining analysis (NASA-CR-151866 (N79-16039). [4] Itoh, K., Akiba, Y., Ohgane, T. & Ogawa, Y. (1985) Fundamental study on SPS rectenna printed on a sheet of copper clad laminate, Space Solar Power Review, 5, pp. 149-162. [5] Itoh, K., Ohgane, T. & Ogawa, Y. (1986) Rectenna composed of a circular microstrip antenna, Space Power, 6, pp. 193-198.
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