Low profile mobile tri-band antenna system
First Claim
1. A mobile tri-band antenna system, comprising:
- an indoor apparatus for controlling the antenna system; and
an outdoor apparatus including a rotating unit for tracking a satellite, a fixing unit for fixing the outdoor apparatus, and a rotary joint means for connecting the rotating unit and the fixing unit, the outdoor apparatus including;
a dual reflecting means for receiving first and second frequency band satellite signals from the satellite, and transmitting a third frequency band satellite signal to the satellite;
a tri-band feeding means for dividing the first frequency band satellite signal as received from the dual reflecting means into a plurality of channel signals, receiving the second frequency band satellite signal, and transmitting the third frequency band satellite signal, wherein the tri-band feeding means includesa feeding horn means for transmitting and receiving the second and third frequency band satellite signals with the dual reflecting means, the feeding horn means including a stepped protruding dielectric rod inserted into a circular waveguide for impedance matching,a polarization converting means for converting a linear polarized wave signal to a circular polarized wave signal and vice versa,an identifying means for identifying the second and third frequency band satellite signals, anda feed array means for dividing the first frequency band satellite signal into a signal of a first channel in a horizontal direction of the azimuth angle and a signal of a second channel in a vertical direction of the elevation angle, according to an arrangement of feed array elements of the feed array means;
a beam shaping means for further dividing the plurality of channel signals into a plurality of first channel signals and a plurality of second channel signals, and combining power of the plurality of first channel signals and power of the plurality of second channel signals through channel switching;
an antenna controlling means for driving the antenna system according to the azimuth angle and the elevation angle to direct the satellite according to the power-combined second channel signals from the beam shaping means;
a downlink frequency means for converting the second frequency band satellite signal to a first downlink frequency;
an uplink frequency means for converting the third frequency band satellite signal to an uplink frequency;
a first triplexing means for outputting the power-combined first channel signals from the beam shaping means to the rotary joint means; and
a second triplexing means for converting the power-combined first channel signals, inputted from the rotary joint means, to a second downlink frequency and providing the converted first channel signals to the indoor apparatus.
1 Assignment
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Accused Products
Abstract
Provided is a mobile tri-band antenna system having low profile. The antenna system includes a tri-band feeding unit for dividing a satellite broadcasting signal by a signal channel in an azimuth angle and an elevation angle, and transmitting/receiving the satellite communication signal through distinguishing the satellite communication signal; a beam shaping unit for dividing the satellite broadcasting signals into a first channel signal and a second channel signal, combined power thereof through channel switching; an antenna controlling unit for driving an antenna system in an azimuth and elevation angle to direct the satellite according to the power combined second channel signal from the beam shaping unit; a first triplexer unit for outputting the power combined first channel signal to a rotary joint unit; a second triplexer unit for converting the first channel signal inputted to a downlink frequency and providing the converted first channel signal to the indoor apparatus.
11 Citations
14 Claims
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1. A mobile tri-band antenna system, comprising:
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an indoor apparatus for controlling the antenna system; and an outdoor apparatus including a rotating unit for tracking a satellite, a fixing unit for fixing the outdoor apparatus, and a rotary joint means for connecting the rotating unit and the fixing unit, the outdoor apparatus including; a dual reflecting means for receiving first and second frequency band satellite signals from the satellite, and transmitting a third frequency band satellite signal to the satellite; a tri-band feeding means for dividing the first frequency band satellite signal as received from the dual reflecting means into a plurality of channel signals, receiving the second frequency band satellite signal, and transmitting the third frequency band satellite signal, wherein the tri-band feeding means includes a feeding horn means for transmitting and receiving the second and third frequency band satellite signals with the dual reflecting means, the feeding horn means including a stepped protruding dielectric rod inserted into a circular waveguide for impedance matching, a polarization converting means for converting a linear polarized wave signal to a circular polarized wave signal and vice versa, an identifying means for identifying the second and third frequency band satellite signals, and a feed array means for dividing the first frequency band satellite signal into a signal of a first channel in a horizontal direction of the azimuth angle and a signal of a second channel in a vertical direction of the elevation angle, according to an arrangement of feed array elements of the feed array means; a beam shaping means for further dividing the plurality of channel signals into a plurality of first channel signals and a plurality of second channel signals, and combining power of the plurality of first channel signals and power of the plurality of second channel signals through channel switching; an antenna controlling means for driving the antenna system according to the azimuth angle and the elevation angle to direct the satellite according to the power-combined second channel signals from the beam shaping means; a downlink frequency means for converting the second frequency band satellite signal to a first downlink frequency; an uplink frequency means for converting the third frequency band satellite signal to an uplink frequency; a first triplexing means for outputting the power-combined first channel signals from the beam shaping means to the rotary joint means; and a second triplexing means for converting the power-combined first channel signals, inputted from the rotary joint means, to a second downlink frequency and providing the converted first channel signals to the indoor apparatus. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A mobile tri-band antenna system, comprising:
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an indoor apparatus for controlling the antenna system; and an outdoor apparatus including a rotating unit that tracks a satellite, a fixing unit fixing the outdoor apparatus, and a rotary joint connecting the rotating unit and the fixing unit, the outdoor apparatus including; a dual reflector receiving first and second frequency band satellite signals from the satellite, and transmitting a third frequency band satellite signal to the satellite, a tri-band feeder receiving first and second frequency band satellite signals from the dual reflector, dividing the received first frequency band satellite signal into a plurality of channel signals, and transmitting the third frequency band satellite signal, wherein the tri-band feeder includes a feeding horn transmitting and receiving the second and third frequency band satellite signals with the dual reflector, the feeding horn including a stepped protruding dielectric rod inserted into a circular waveguide for impedance matching, a polarization converter means for converting a linear polarized wave signal to a circular polarized wave signal and vice versa, an identifying means for identifying the second and third frequency band satellite signals, and a feed array antenna for dividing the first frequency band satellite signal into a signal of a first channel in a horizontal direction of the azimuth angle and a signal of a second channel in a vertical direction of the elevation angle, according to an arrangement of feed array elements of the feed array means; a beam shaping unit further dividing the plurality of channel signals into a plurality of first channel signals and a plurality of second channel signals, and combining power of the plurality of first channel signals and power of the plurality of second channel signals through channel switching, an antenna controller driving the antenna system according to the azimuth angle and the elevation angle to direct the satellite according to the power-combined second channel signals, a downlink frequency converter converting the second frequency band satellite signal to a first downlink frequency, an uplink frequency converter converting the third frequency band satellite signal to an uplink frequency, a first triplexer outputting the power-combined first channel signals to the rotary joint, and a second triplexer receiving the power-combined first channel signals from the rotary joint, converting the received first channel signals to a second downlink frequency, and providing the converted first channel signals to the indoor apparatus. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification