Antenna device, antenna module, and communication device
JPWO2025164533A5Pending Publication Date: 2026-07-03
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Filing Date
- 2026-04-01
- Publication Date
- 2026-07-03
AI Technical Summary
Technical Problem
Existing antenna devices with restricted ground electrode size and shape suffer from limited radio wave radiation direction and degradation of antenna characteristics.
Method used
The antenna device incorporates a rectangular dielectric substrate with multiple dielectric layers, first and second radiating elements, a ground electrode, and peripheral electrodes to expand radiation range while maintaining antenna characteristics.
Benefits of technology
The solution allows for expanded radio wave radiation without degrading antenna characteristics, achieving broader coverage and improved symmetry of electric field lines.
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Abstract
This antenna device comprises: a rectangular dielectric substrate (130) in which a plurality of dielectric layers are laminated and which has two sets of opposing sides; at least one first radiation element (121) formed on the dielectric substrate (130); at least one second radiation element (122) disposed side by side with the at least one first radiation element (121) in a first direction that is orthogonal to the lamination direction of the dielectric substrate (130) and is parallel to one of the two sets of opposing sides; a ground electrode (GND1) disposed so as to face the at least one first radiation element (121) and the at least one second radiation element (122); and at least one peripheral electrode (150) formed in a plurality of layers between the at least one first radiation element (121) and the ground electrode (GND1), the at least one peripheral electrode (150) being electrically connected to the ground electrode (GND1) and the at least one second radiation element (122). When the dielectric substrate (130) is viewed in plan view from the lamination direction, a first end portion closer to a center line dividing the dielectric substrate (130) into two equal parts in the first direction, among the two end portions of the at least one second radiation element (122) in the second direction orthogonal to the lamination direction and the first direction, is open-ended.
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