Antenna system for mobile vehicles

An antenna system, the antenna system comprising:

• a rotation unit inside a radome, wherein the rotation unit is configured to at least one of receive or transmit a radio signal for satellite communication, and to track a satellite direction;
• an external fixed unit outside the radome, wherein the external fixed unit comprises
• a frequency converter configured to frequency-convert the radio signal, and
• a power distributor configured to distribute power to at least a portion of the antenna system;
• an internal fixed unit inside the radome, comprising an azimuth tracking motor configured to track an azimuth of the rotation unit, and to provide an interface between the rotation unit and the external fixed unit;
• a communication part between the rotation unit and the internal fixed unit, configured to transmit the radio signal for satellite communication between the rotation unit and the external fixed unit;
• a control part between the rotation unit and the internal fixed unit, configured to transmit a control signal and the power between the internal fixed unit and the external fixed unit;
• wherein the rotation unit comprises
• a beam transmitting/receiving module configured to at least one of transmit or receive the radio signal for satellite communication,
• at least one motor configured to control an elevation angle and a polarization angle of the rotation unit,
• a sensor configured to estimate attitude information of the antenna system, and
• an antenna controller configured to control the at least one motor and the azimuth tracking motor based at least partly on a satellite tracking signal received through the beam transmitting/receiving module and the attitude information;
• wherein the internal fixed unit further comprises a temperature controller configured to control an internal temperature of the radome, and wherein the sensor is configured to measure the internal temperature of the radome and to control power supplied to the temperature controller at least partly by controlling the power distributor based on the temperature information.

An antenna system, the antenna system comprising:

• a rotation unit inside a radome, wherein the rotation unit is configured to at least one of receive or transmit a radio signal for satellite communication, and to track a satellite direction;
• an external fixed unit outside the radome, wherein the external fixed unit comprises
• a frequency converter configured to frequency-convert the radio signal, and
• a power distributor configured to distribute power to at least a portion of the antenna system;
• and
• a data collector configured to transmit status information of the rotation unit and the external fixed unit to a control system that controls the antenna system, and to transmit control signals from the control system to an antenna controller of the rotation unit.