Page 249 - Satellite Communications, Fourth Edition
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The Space Segment 229
Figure 7.24 Communications subsystem functional diagram for Morelos. (Courtesy of
Hughes Aircraft Company Space and Communications Group.)
As mentioned, the satellites are part of the Hughes 376 series, illus-
trated in Figs. 7.1 and 7.6. A 180-cm-diameter circular reflector is used
for the C band. This forms part of a dual-polarization antenna, with sep-
arate C-band feeds for horizontal and vertical polarizations. Morelos pro-
vided the C-band footprint pattern shown in Fig. 7.25a.
The Morelos K-band reflector was elliptical in shape, with axes meas-
uring 150 by 91 cm. It had its own feed array, producing a footprint
which closely matched the contours of the Mexican land mass, as shown
