Signal generation device

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United States of America Patent

PATENT NO 11438083
APP PUB NO 20210320735A1
SERIAL NO

17274526

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Abstract

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A signal generating device includes a digital signal processing unit, M sub DACs of which an analog bandwidth is fB, M being an integer equal to or greater than 2, a broadband analog signal generating unit configured to generate a broadband analog signal that includes a component of a frequency of (M-1)fB or more by using M analog signals output from the M sub DACs. The digital signal processing unit includes components for generating M original divided signals that correspond to signals obtained by dividing a desired output signal into M portions on a frequency axis and down-converting the portions to the baseband, components for generating M folded divided signals by folding back the M original divided signals on the frequency axis, and a 2M×M filter that takes the original divided signals and the folded divided signals as inputs and outputs M composite signals to be transmitted to the M sub DACs. The 2M×M filter can set a response function independently for each of 2M2 combinations of input and output.

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Patent Owner(s)

Patent OwnerAddress
NIPPON TELEGRAPH AND TELEPHONE CORPORATION5-1 OTEMACHI 1-CHOME CHIYODA-KU TOKYO 1008116

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Miyamoto, Yutaka Musashino, JP 117 995
Nagatani, Munehiko Musashino, JP 43 188
Nakamura, Masanori Musashino, JP 198 1714
Nosaka, Hideyuki Musashino, JP 71 253
Yamazaki, Hiroshi Musashino, JP 474 4587

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