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Patent Searching and Data

Document Type and Number:
WIPO Patent Application WO/2019/188548
Kind Code:
This wireless communication device serves as a base station device or terminal station device in a wireless communication system comprising a plurality of terminal station devices and a base station device equipped with a plurality of antenna elements. The wireless communication device comprises a high-frequency circuit which performs signal processing including frequency conversion between a signal in a wireless frequency band and a signal in a base band or an intermediate frequency band; and an analog signal processing circuit which performs gain adjustment in such a manner that the gain for each antenna element when transmitting or receiving signals is a predetermined value which depends on the position of the antenna element. The analog signal processing circuit is equipped with: a splitter/coupler which splits or couples the high frequency circuit and a plurality of antenna elements to perform one pair (N×M) of connections for an integer N of two or more corresponding to the number of antenna elements and an integer M of one or more; and at least one phase shifter which is connected between the splitter/coupler and each of the plurality of antenna elements.

OTA Atsushi (9-11 Midori-cho 3-chome, Musashino-sh, Tokyo 85, 〒1808585, JP)
KITA Naoki (9-11 Midori-cho 3-chome, Musashino-sh, Tokyo 85, 〒1808585, JP)
SHIRATO Yushi (9-11 Midori-cho 3-chome, Musashino-sh, Tokyo 85, 〒1808585, JP)
GOTO Kazuto (9-11 Midori-cho 3-chome, Musashino-sh, Tokyo 85, 〒1808585, JP)
ITO Kota (9-11 Midori-cho 3-chome, Musashino-sh, Tokyo 85, 〒1808585, JP)
KOU Syunsyou (9-11 Midori-cho 3-chome, Musashino-sh, Tokyo 85, 〒1808585, JP)
Application Number:
Publication Date:
October 03, 2019
Filing Date:
March 19, 2019
Export Citation:
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NIPPON TELEGRAPH AND TELEPHONE CORPORATION (5-1 Otemachi 1-chome, Chiyoda-ku Tokyo, 16, 〒1008116, JP)
International Classes:
H04B7/0413; H01Q3/36; H01Q21/06; H04B7/06; H04B7/08
Foreign References:
Attorney, Agent or Firm:
SHIGA INTERNATIONAL PATENT OFFICE (1-9-2, Marunouchi Chiyoda-k, Tokyo 20, 〒1006620, JP)
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