Patent ID: 6989787
Filing Date: 2006-01-24
Classification: H01Q

Abstract:
1. An antenna system for satellite communication including a transmission/reception connecting means for a communication terminal and an information exchanging means for tracking an elevation electronically and tracking a satellite electronically/mechanically, the antenna system comprising: a plurality of array antennas for transmitting/receiving a signal to/from a satellite; a plurality of reception active channel modules for performing a low noise amplification to a predetermined frequency of a satellite signal inputted through the plurality of array antennas and for shifting the frequency to a desired phase; a reception active module for receiving the satellite signal from the plurality of reception active channel modules, coupling the satellite signals according to positions of the antenna arrays, and transmitting the coupled satellite signals to the communication terminal through the transmission/reception connecting means; a first conversion means for receiving the signals from the communication terminal and up-converting the signal into a satellite frequency; a transmission active module for amplifying/dividing the signals inputted from the first conversion means through the transmission/reception connecting means; a plurality of transmission active channel modules for controlling a phase of the signals inputted from the transmission active module and transmitting the phase-controlled signals to the array antenna; a first control means for controlling the plurality of reception active channel modules, the reception active module, the plurality of transmission active channel modules and the transmission active module by using a satellite tracking signal inputted from the reception active module; a first transmission/reception duplexer for transmitting the output signal of the reception active module to the transmission/reception connecting means and transmitting a signal outputted from the transmission/reception connecting means to the transmission active module; and a second transmission/reception duplexer for transmitting a signal inputted through the transmission/reception connecting means to the communication terminal and transmitting a signal from the communication terminal to the transmission/reception connecting means, wherein the transmission active module includes: