Low signal loss type hot stand-by switching unit
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United States of America Patent
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Mar 23, 1999
Grant Date -
N/A
app pub date -
Nov 13, 1997
filing date -
Nov 18, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A hot stand-by switching unit for a receiving apparatus including regular and a protection receiver comprises a branch circuit and a control circuit. The branch circuit consists of a coupler and a high-frequency switching unit. The high-frequency switching unit is controlled by the control circuit and supplies a low loss output of the coupler to the regular receiver and a high loss output of the coupler to the protection receiver. When the regular receiver breaks down, the high-frequency switching unit supplies the low loss output of the coupler to the protection receiver and the high loss output of the coupler to the regular receiver.
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