Planar Shared-Radiator Antenna Layout for Compact Dual Wireless Links
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing antenna devices require a large volume of space, making it difficult to accommodate multiple antennas within a housing, which limits their deployment in compact equipment.
Innovation Solution
The antenna device incorporates a ground electrode plate, first and second radiating electrode plates, and feeder lines configured to allow multiple antennas to share a common radiating electrode plate, reducing the overall size requirement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a three-dimensional antenna structure is used, then antenna performance is improved, but the volume occupied increases
Solution Approach 1:
The patent merges multiple antenna functions into a single planar structure. The ground electrode plate serves as both the ground for the first antenna and the radiating element for the second antenna, eliminating the need for separate three-dimensional structures and reducing overall volume while maintaining dual antenna functionality.
Solution Approach 2:
The invention transitions from a three-dimensional antenna structure to a two-dimensional planar configuration. By flattening the antenna structure onto a single plane with electrode plates arranged in specific patterns, the patent achieves compact form factor while preserving antenna performance through optimized electrode geometry and spacing.
2Volume of stationary object
If antenna size is reduced, then space for multiple antennas is secured, but antenna performance may deteriorate
Solution Approach 1:
The patent applies local quality optimization by designing specific electrode patterns with varying geometries in different regions of the planar structure. The first and second radiating electrode plates have optimized shapes, sizes, and positions that are locally tailored to achieve resonant frequencies and impedance matching, ensuring high performance despite the compact overall size.
Data Source
AI summary
An antenna device includes: a ground electrode plate; one or more first radiating electrode plates which face the ground electrode plate; a second radiating electrode plate which lies between the ground electrode plate and the one or more first radiating electrode plates; one or more first feeder lines which are connected to the one or more first radiating electrode plates; a second feeder line which is not connected to the one or more first feeder lines but is connected to the second radiating electrode plate; and a ground line which does not connect the one or more first radiating electrode plates to the ground electrode plate but connects the second radiating electrode plate to the ground electrode plate. The one or more first radiating electrode plates lie inside the second radiating electrode plate as viewed from a thickness direction of the ground electrode plate.