Telecommunications – Carrier wave repeater or relay system – Transmitter/receiver feedback compensation
Reexamination Certificate
2006-05-16
2006-05-16
Orgad, Edan (Department: 2684)
Telecommunications
Carrier wave repeater or relay system
Transmitter/receiver feedback compensation
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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Kawase Katsuyuki
Shibata Jun
Takase Tetsu
Takemoto Makoto
Orgad Edan
Pearne & Gordon LLP
Sharma Sujatha
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