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On-orbit testing of G/T for MUOS is complicated by the satellite automatic level control (ALC) which compensates for Ka rain fades to achieve high link availability. Because the satellite is commanded to operate in a non-standard mode for testing, the uplink transmitting terminal broad-band noise contribution is nearly equal to the expected level of satellite noise being measured! The antenna size...
A dual-polarized ceiling-mounted antenna, based on previous ceiling-mounted antennas is proposed in this letter. It consists of one vertical polarization unit and one horizontal polarization unit. The vertical polarization unit is a transformation of a monopole, looking like a tundish. And the horizontal polarization unit comprises of four dipoles on a substrate ring. The two units compose a nesting...
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