The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 31, 2000
Filed:
Apr. 12, 1999
Kenichi Takai, Saitama, JP;
NEC Corporation, Tokyo, JP;
Abstract
Circuitry for controlling the directivity of an adaptive antenna including a plurality of antenna elements and forming the directivity by varying signals fed to the antenna elements such that a gain in a preselected direction increases is disclosed. The circuitry includes a transmitting section for transmitting a scanning pilot channel for scanning on a downlink while causing the pilot channel to move in a propagation range covered by the adaptive antenna. A receiving section receives a signal representative of the intensity of the scanning pilot channel received by a mobile station. A controller detects a transmission direction in which the mobile station receives the scanning pilot channel with the highest quality, and applies the directivity parameter of the detected direction to the directivity of a downlink. The circuitry improves the directivity of the downlink in mobile communication.