Title:
【発明の名称】デジタルSSB変調器
Document Type and Number:
Japanese Patent JP2632852
Kind Code:
B2
Abstract:
A digital SSB modulator in which an analog signal such as a vocal signal is temporarily converted to a digital signal, which is then subjected to SSB modulation using digital phase shifters and digital orthogonal amplitude modulators, and the resulting signal is converted back to an analog modulated signal. A digital filter may be provided after each digital phase shifter for eliminating direct-current signal components. Another digital filter may be provided after each digital orthogonal amplitude modulator for eliminating carrier signal components.
Inventors:
ASAHI NOBUMITSU
KAWASE SEISHI
KAWASE SEISHI
Application Number:
JP14624687A
Publication Date:
July 23, 1997
Filing Date:
June 13, 1987
Export Citation:
Assignee:
KENUTSUDO KK
International Classes:
H03C1/60; H04L27/04; (IPC1-7): H03C1/60; H04L27/04
Domestic Patent References:
| JP61287304A | ||||
| JP5317252A |