Simulsat
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Simulsat is a quasi-parabolic satellite earthstation antenna that is capable of receiving satellite transmissions from 35 or more C and Ku band satellites simultaneously. A standard parabolic antenna with one LNB is able to receive signals from a single satellite at a time.
Simulsat antennas are parabolic in one plane and spherical in the other. Since it has multiple points of reflection, one antenna is able to receive signals from more than one satellite at a time. It uses a special antenna/downconverter (low-noise block converter) for each satellite. The LNB's are mounted in an arc in front of the dish.
They are manufactured and sold by the Antenna Technology Communications, Inc. ATCi, for whom Simulsat is their primary product. Currently, three versions are manufactured, Simulsat 5, Simulsat C/Ku, and Simulsat 7.
[edit] Disadvantages
The main disadvantages of this type of antennas is its size - about 25 meters in length and its price - about $100,000 for "budget" solution.