| 摘要 |
The objective of the present invention is to provide a multi-band array antenna with which it is possible to optimize the spacing between adjacent multi-band array antenna elements, and with which it is possible for electric power to be divided appropriately using a dividing circuit. This multi-band array antenna 100 includes: m first antenna elements 10 which operate in p frequency bands; n second antenna elements 12 which operate in q frequency bands; a Wilkinson power divider 14; a filter 16; and a matching circuit 18. m and n are positive integers satisfying m+n≥3 and either m=n+1, n=m+1 or 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 disposed alternately. The matching circuit 18 matches the impedances of the filter 16 and the power divider 14 in the attenuation frequency band of the filter 16. A series-connected circuit portion is configured in such a way that a branching portion of the power divider 14 is an open end in the attenuation frequency band. |
