Modulation signal analysis apparatus

Details Modulation signal analysis apparatus Modulation signal analysis apparatus

2005-05-10

2005-05-10

Ghayour, Mohammed (Department: 2631)

Pulse or digital communications

Receivers

C375S224000, C375S298000, C324S076230, C324S076270, C331S004000, C331S049000

Reexamination Certificate

active

06891904

ABSTRACT:
An analysis operation section uses a digital signal converted by an A/D converter, and performs frequency analysis for a modulation signal and modulation analysis for the modulation signal selected by a signal selection circuit in order to modulate/analyze a digital signal level of the modulation signal as an analysis object outputted from a level converter. A controller instructs the analysis operation section to execute an analysis instruction inputted via an operation input section, sends a selection instruction to the signal selection circuit in accordance with a modulation type of the inputted modulation signal, and sets a bandwidth of an RBW filter in accordance with the modulation type when the modulation signal having a band limited by the RBW filter is selected as the modulation signal inputted to the A/D converter, and the modulation analysis instruction is inputted.

REFERENCES:
patent: 6112067 (2000-08-01), Seike et al.
patent: 6243576 (2001-06-01), Seike et al.
patent: 6509728 (2003-01-01), Uchino et al.
patent: 5-80053 (1993-10-01), None
patent: 6-217230 (1994-08-01), None
patent: 9-257843 (1997-10-01), None

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