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Title:
LINEAR AMPLIFYING DEVICE, INPUT SIGNAL SUPPLYING METHOD, AND ORIGIN AVOIDING CIRCUIT USED THEREIN
Document Type and Number:
WIPO Patent Application WO/2017/209045
Kind Code:
A1
Abstract:
The objective of the present invention is to ameliorate ringing of signals that have passed through a low pass filter in a LINC type linear amplifier. This linear amplifying device includes: a linear amplifier including a low pass filter which removes high-frequency components; and an origin avoiding circuit which receives an original input signal and is provided upstream of the linear amplifier. If the original input signal is sampled in the vicinity of the origin, the origin avoiding circuit modifies the sampled value by replacing the sampled value with a fixed value, and supplies the modified input signal to the linear amplifier.

Inventors:
KURODA, Yasutaka (10, Nisshin-cho 1-chome, Fuchu-sh, Tokyo 01, 〒1838501, JP)
SUMITA, Noriaki (10, Nisshin-cho 1-chome, Fuchu-sh, Tokyo 01, 〒1838501, JP)
ISHIKAWA, Takashi (10, Nisshin-cho 1-chome, Fuchu-sh, Tokyo 01, 〒1838501, JP)
OOHASHI, Tomohiko (LTD 6-18-7, Naruse, Machida-sh, Tokyo 44, 〒1940044, JP)
KISHI, Kazuki (LTD 6-18-7, Naruse, Machida-sh, Tokyo 44, 〒1940044, JP)
Application Number:
JP2017/019907
Publication Date:
December 07, 2017
Filing Date:
May 29, 2017
Export Citation:
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Assignee:
NEC NETWORK AND SENSOR SYSTEMS, LTD. (10 Nisshin-cho 1-chome, Fuchu-shi Tokyo, 01, 〒1838501, JP)
International Classes:
H03F1/02; H03F3/24; H03F3/68; H04L27/36
Attorney, Agent or Firm:
IKEDA, Noriyasu et al. (NANBA Bldg, 19-4 Nishishinbashi 1-chome, Minato-k, Tokyo 03, 〒1050003, JP)
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