Planar Split Ring Resonator Antenna for Wideband Miniaturization
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Solution Overview
Problem
Existing antennas face challenges in miniaturization and manufacturing costs due to the need for separately arranged split ring part resonators, which also narrow the operating band when applied to patch antennas.
Innovation Solution
A compact antenna design where a first and second split ring part are continuous in an approximate C-shape, connected by conductor vias, forming a split ring part resonator that can be integrated within a dielectric multilayer substrate, allowing for wide band operation and cost-effective manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If split ring part resonators are arranged perpendicularly with respect to the ground plane to achieve miniaturization, then the antenna size is reduced, but the manufacturing cost increases due to inability to integrate with normal printed substrate manufacturing process
Solution Approach 1:
The patent transitions from three-dimensional perpendicular arrangement of split ring resonators to a planar two-dimensional configuration where the resonators are arranged parallel to the ground plane within the same substrate layer. This dimensional change enables integration with standard PCB manufacturing processes while maintaining the miniaturization effect through optimized planar geometry and spacing of the resonator elements.
2Volume of moving object
If split ring part resonators are applied to patch antenna to achieve miniaturization, then the antenna size is reduced, but the operating band becomes narrower
Solution Approach 1:
The patent divides the antenna system into multiple independent split ring resonator units that can be selectively activated or configured. By segmenting the resonator structure into multiple elements with different geometries and positions, the antenna can support multiple resonant frequencies simultaneously, thereby expanding the operating band while maintaining overall miniaturization through compact arrangement of the segmented elements.
Solution Approach 2:
The patent employs composite structures combining split ring resonators with complementary metallic structures (CMS) that have opposite magnetic responses. This composite approach creates a broader effective permeability profile across frequency, enabling wideband operation while the overall structure remains compact due to the synergistic interaction between the different resonator types.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design achieves miniaturization and wide band operation while reducing manufacturing costs by integrating the split ring part resonator within a dielectric multilayer substrate, enabling efficient electromagnetic wave control and frequency coverage.
Implementation Method 1
A split ring part resonator is able to control the effective magnetic permeability by interacting with a magnetic field
Implementation Method 2
split ring part resonator using a C-shaped split ring part
Implementation Method 3
By connecting the first split ring part and the second split ring part by means of conductor vias, a split ring part resonator itself can be made an antenna radiator
Data Source
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AI summary
An antenna includes: a first conductor layer including a first split ring part surrounding a first opening part, the first split ring part having a first split part provided at a portion in a circumferential direction, the first split ring part being continuous in an approximate C-shape; a second conductor layer including a second split ring part opposing the first split ring part, the second split ring part surrounding a second opening part, the second split ring part having a second split part at a portion in a circumferential direction, the second split ring part being continuous in an approximate C-shape; a plurality of conductor vias provided with an interval in a circumferential direction of the first split part and the second split part, the conductor vias electrically connecting the first split ring part and the second split ring part; and a power feed line provided on a conductor layer different from the first conductor layer, the power feed line having a first end and second end, the firs end being electrically connected to at least one of the conductor vias, the second end spanning the first and the second opening parts and extending to a region opposing the first split ring part.