Telecommunications – Receiver or analog modulated signal frequency converter – Noise or interference elimination
Patent
1980-05-08
1982-10-19
Chin, Tommy P.
Telecommunications
Receiver or analog modulated signal frequency converter
Noise or interference elimination
455137, H04B 110
Patent
active
043554199
ABSTRACT:
A radio signal receiving system has first and second signal receiving sections, the outputs of which are combined to provide a combined signal. The signal combiner has first and second input terminals for respectively receiving the outputs of the first and second receiving sections. First, second and third interlocking switches are interconnected so that, when two outputs are derived in a normal state, from the first and second receiving sections, the first and second switches are closed, with the third switch opened. When either of the first or second outputs is driven out of the normal state, the first or second switch receiving the normal signal and the third switch is closed, while the first or second switch, receiving the abnormal signal, is opened. This way, the remaining normal signal replaces the abnormal signal to maintain the impedance balance in the system.
REFERENCES:
patent: 2470292 (1949-05-01), Daniel
patent: 4017859 (1977-04-01), Medwin
Chin Tommy P.
Nippon Electric Co. Ltd.
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