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:
Jun. 25, 2019
Filed:
Apr. 22, 2016
Ntt Docomo, Inc., Chiyoda-ku, JP;
NTT DOCOMO, INC., Chiyoda-ku, JP;
Abstract
A multi-band array antenna comprises m first antenna elements operating in p frequency bands; n second antenna elements operating in q frequency bands; a Wilkinson power distributor; one or more filters; and one or more matching circuits. Here, m and n are positive integers satisfying m+n≥3 and any of m=n+1, n=m+1 and m=n; and p and q are positive integers satisfying p≥1, q≥2 and q>p. The m first antenna elements and the n second antenna elements are alternately arranged. The matching circuit performs impedance matching between the filter and the Wilkinson power distributor in a frequency band attenuated by the filter. A series-connection circuit portion is configured so that a branch portion of the power distributor becomes an open end in the attenuation frequency band.