Amplifiers – With amplifier condition indicating or testing means
Patent
1994-03-25
1995-02-28
Mullins, James B.
Amplifiers
With amplifier condition indicating or testing means
324620, 330 52, 330151, G01R 1900
Patent
active
053941209
ABSTRACT:
A device for testing an amplifier. A plurality of PN modulators are provided corresponding to a plurality of oscillators at stages preceding or following them, or fluctuation is given to division ratios at the oscillators. Since each of n carriers combined by a combiner contains phase fluctuation, the possibility that the peaks will overlap each other or that the carriers having opposite phases will negate each other is very low. The peak power in signals supplied to the amplifier to be tested is unlikely to vary, enabling accurate evaluation or testing.
REFERENCES:
patent: 4028622 (1977-06-01), Evans et al.
patent: 4494238 (1985-01-01), Groth, Jr.
patent: 4885551 (1989-12-01), Myer
Fujiwara Masaaki
Ito Akira
Nojima Toshio
Sakamoto Hironori
Japan Radio Co. Ltd.
Mullins James B.
NTT Mobile Communications Network Inc.
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