US 11,837,801 B2
Antenna module and communication device equipped with the same
Ryo Komura, Kyoto (JP); and Yoshiki Yamada, Kyoto (JP)
Assigned to MURATA MANUFACTURING CO., LTD., Kyoto (JP)
Filed by Murata Manufacturing Co., Ltd., Kyoto (JP)
Filed on Apr. 9, 2021, as Appl. No. 17/226,207.
Application 17/226,207 is a continuation of application No. PCT/JP2019/035609, filed on Sep. 11, 2019.
Claims priority of application No. 2018-193291 (JP), filed on Oct. 12, 2018.
Prior Publication US 2021/0226335 A1, Jul. 22, 2021
Int. Cl. H01Q 9/04 (2006.01); H01Q 1/14 (2006.01); H01Q 21/06 (2006.01)
CPC H01Q 9/045 (2013.01) [H01Q 1/14 (2013.01); H01Q 21/065 (2013.01)] 11 Claims
OG exemplary drawing
 
1. An antenna module, comprising:
a radiation electrode having a flat plate shape and being configured to receive a first radio frequency signal at a first feed point and a second radio frequency signal at a second feed point;
a first feed wire configured to supply the first radio frequency signal to the first feed point;
a second feed wire that branches from the first feed wire and that is configured to supply the second radio frequency signal to the second feed point,
a dielectric substrate having a multilayer structure and comprising the radiation electrode, the first feed wire, and the second feed wire, and
a ground electrode in the dielectric substrate,
wherein the second feed wire is in a layer between the radiation electrode and the ground electrode, or opposite the radiation electrode across the ground electrode,
wherein the second feed wire comprises a first path and a second path that have lengths equal to each other and that are connected in parallel between the first feed point and the second feed point, and
wherein as seen in a plan view of the antenna module, the first path and the second path are mutually line-symmetric with respect to a straight line connecting the first feed point to the second feed point.