| 摘要 |
PROBLEM TO BE SOLVED: To provide an antenna unit where the number of parts can be reduced and mass-productivity and reliability can be improved as a system by mixing the CS-IF signals of a horizontal polarized wave and a vertical polarized wave and mixing them with the mixed signal of the respective signals of UHF, VHF and BS-IF so as to lead them. SOLUTION: A received BS signal is converted into the BS-IF signal of an intermediate frequency in a frequency conversion means and it is mixed with the mixed signal of the UHF signal and the VHF signal from an input terminal, is led out from the output terminal of LNB for BS 118 and is supplied to the input terminal of LNB for CS 116. In LNB for CS 116, the horizontal polarized signal and the vertical polarized signal of the received CS signal are converted into the CS-IF (horizontal polarized wave) and the CS-IF (vertical polarized wave) of the intermediate frequency, and they are mixed. Then, the mixed CS-IF signal is supplied to a second input means. It is mixed with the mixed signal of the signals of UHF, VHF and BS-IF and they are led out from a second output means. |
