Relay apparatus

Telecommunications – Carrier wave repeater or relay system – Transmitter/receiver feedback compensation

Reexamination Certificate

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Details

C455S189100, C455S191100, C455S196100, C455S007000, C455S012100, C455S013100

Reexamination Certificate

active

07046960

ABSTRACT:
While a spectrum waveform of an output signal from a subtracter (207) is visibly monitored, an operator controls a variable phases shifter (208) based upon a second control signal (CL2) so that a shape of a spectrum waveform of an output signal from a subtracter (207) is approximated to a spectrum waveform of a desirable wave to change a phase of a local oscillation frequency signal from a local oscillator (206). As a result, a phase of a duplicated loop signal is changed. Also, the operator controls a variable attenuator (209) based upon a first control signal (CL1) so that a shape of this spectrum waveform is approximated to a spectrum waveform of a desirable wave (20) to change a signal level of the duplicated loop signal.

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patent: 2000022615 (2000-01-01), None

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