Abstract: Disclosed is a phased-array antenna. The phased-array antenna includes a plurality of element antennas having feed lines formed thereon, antenna modules configured to extend and be disposed in longitudinal directions of the element antennas and independently connected to one ends of the plurality of element antennas, respectively, and a signal distribution module disposed in a direction perpendicular to the antenna modules, having one side surfaces being perpendicularly connected to each of the antenna modules, and configured to distribute an input signal to the corresponding antenna modules through connection pins whose one sides are respectively connected to the antenna modules.

Abstract: Disclosed is a wideband and multi-band frequency up converter used in a satellite earth station. The converter includes a first mixer configured to mix an intermediate frequency (IF) signal and a first local signal, and generate an IF? signal; a narrow band filter configured to filter the IF signal; a first local oscillator configured to generate a first local signal so that the IF? signal passes the narrow band filter; a second local oscillator configured to generate a second local signal needed to convert the IF? signal into a desired frequency (RF) band; a second mixer configured to mix the IF? signal filtered in the narrow band filter and the second local signal, and generate an RF signal; a wideband filter configured to filter the generated RF signal; and a control unit configured to vary a frequency of the first local signal.