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Patent Searching and Data


Title:
FADING GENERATOR
Document Type and Number:
Japanese Patent JPS5868340
Kind Code:
A
Abstract:

PURPOSE: To estimate the amount of delay distortion in a fading generation period, to improve symmetry, and to evaluate equivalent characteristics accurately, by providing a delay equalizer to one of two paths for distributing an input signal.

CONSTITUTION: An input signal from an input terminal 1 is distributed into two by a distributor 2 to the path composed of a delay line 3 and the path of a variable phase shifter 4, a variable attenuator 5, a delay equalizer 9, and a delay line 6; and the outputs of both the paths are synthesized by a synthesizer 7, whose output is outputted from an output terminal 8. This delay equalizer 9 is provided on the output side of the variable attenuator 5 to equalize delay distortion generated on a reflecting path, and the attenuation amount of frequency characteristics is made symmetrical on a prescribed frequency, thus evaluating equivalent characteristics accurately.


Inventors:
WATANABE SHIYOUJI
Application Number:
JP16565881A
Publication Date:
April 23, 1983
Filing Date:
October 19, 1981
Export Citation:
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Assignee:
NIPPON ELECTRIC CO
International Classes:
H04B7/00; H04B17/00; (IPC1-7): H04B7/00
Domestic Patent References:
JPS5714228A1982-01-25
Attorney, Agent or Firm:
Ashida Tan