Digital modulation signal generator

Details Digital modulation signal generator Digital modulation signal generator

2005-06-07

2005-06-07

Ghayour, Mohammed (Department: 2631)

Pulse or digital communications

Systems using alternating or pulsating current

Angle modulation

C375S224000, C375S279000, C375S295000, C375S298000

Reexamination Certificate

active

06904099

ABSTRACT:
With respect to a digital modulation signal outputted from an output terminal, in order to enable desired carrier leak characteristics to be compatible with desired mutual modulation distortion characteristics according to a measurement object, a first level varying member is provided between an amplifier and an output terminal. In addition, a second level varying member is provided between a base band signal generator and an orthogonal modulator. The first and second level varying members are respectively set to be predetermined attenuation quantity values based on an output level value of a digital modulation signal specified by an output level specifying member and the judgment result caused by a judgment portion.

REFERENCES:
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patent: 2000-323999 (2000-11-01), None
K. Toda et al; “MG 3670A Development of Digital Modulation Signal Generator”, Anritsu Technical No. 66, Sep. 1993; pp. 49-55.
S. Komiyama et al; “MG 3671B Digital Modulation Signal Generator”, Anritsu Technical No. 74, Oct. 1997, pp. 80-88.

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