US 11,916,312 B2
Antenna module, communication device mounting the same, and circuit board
Kota Arai, Nagaokakyo (JP)
Assigned to MURATA MANUFACTURING CO., LTD., Nagaokakyo (JP)
Filed by Murata Manufacturing Co., Ltd., Nagaokakyo (JP)
Filed on Feb. 24, 2022, as Appl. No. 17/679,102.
Application 17/679,102 is a continuation of application No. PCT/JP2020/024808, filed on Jun. 24, 2020.
Claims priority of application No. 2019-154880 (JP), filed on Aug. 27, 2019.
Prior Publication US 2022/0181781 A1, Jun. 9, 2022
Int. Cl. H01Q 1/22 (2006.01); H01Q 9/04 (2006.01); H01Q 13/08 (2006.01)
CPC H01Q 9/0407 (2013.01) [H01Q 13/08 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An antenna module comprising:
a dielectric substrate of a multilayer structure having a first main surface and a second main surface;
a radiating element formed on the first main surface or in an inner layer of the dielectric substrate;
a first feed wiring that conveys a radio frequency signal to the radiating element;
a first filter arranged on a signal path of the first feed wiring; and
a first ground electrode that faces the radiating element and is arranged in a layer between the radiating element and the first filter, wherein
the second main surface of the dielectric substrate includes a recess, and
in a plan view from a normal direction of the dielectric substrate, the first filter does not overlap the recess.