Communications: radio wave antennas – Antennas – Wave guide type
Reexamination Certificate
2005-08-16
2005-08-16
Chen, Shih-Chao (Department: 2821)
Communications: radio wave antennas
Antennas
Wave guide type
C343S7810CA, C343S786000
Reexamination Certificate
active
06930648
ABSTRACT:
In a satellite receiver a feeder element is provided that includes several feeder horns on a microwave head (low noise block downconverter (LNB)) for distributing satellite signals from different satellites to different channels in the different horns and means for blocking all channels, except for the one that is presently desired to be used, before the signals sent on these channels reach the microwave head.
REFERENCES:
patent: 6111547 (2000-08-01), Gau et al.
patent: 6121939 (2000-09-01), Imaizumi et al.
patent: 0843381 (1998-05-01), None
patent: 9602953 (1996-02-01), None
patent: 9954958 (1999-10-01), None
Chen Shih-Chao
Horizon Microwaves Ltd.
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