Multi-Band Antenna Gap Segmentation for Static Wideband Tuning
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Solution Overview
Problem
Conventional antenna designs struggle to achieve desired performance across a wide range of frequency bands without increasing complexity or space consumption, and managing interference between multiple antennas becomes challenging as frequency bandwidths expand.
Innovation Solution
The design of an antenna device with first and second conductors on a dielectric support, featuring gaps with varying distances between them, allowing for tuned impedance and coupling at different resonant frequencies, enabling operation across multiple frequency bands without reconfigurability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional antenna designs are used to achieve wide frequency bandwidth, then frequency coverage is improved, but device complexity and space consumption increase
Solution Approach 1:
The gap between conductors is divided into multiple regions with different gap distances, allowing each region to contribute to different frequency bands. This segmentation enables wide bandwidth operation without requiring multiple separate antenna elements, thus avoiding increased device complexity.
Solution Approach 2:
Different portions of the gap have different gap distances tailored to specific frequency requirements. The first region has a first gap distance for first resonant frequency, the second region has a second gap distance for second resonant frequency, and the third region has a third gap distance for third resonant frequency. This local variation in gap quality enables multi-band operation within a single antenna structure.
2Adaptability or versatility
If multiple antennas are added to cover different frequency bands, then frequency coverage is improved, but interference management becomes more difficult
Solution Approach 1:
Multiple frequency band capabilities are merged into a single antenna device by incorporating multiple conductors with differently spaced gap regions. This consolidation eliminates interference issues between separate antennas while maintaining wide frequency coverage through the varied gap distances within the unified structure.
3Device complexity
If antenna structure is simplified to reduce complexity, then device complexity is reduced, but performance across wide frequency bandwidth deteriorates
Solution Approach 1:
The antenna device achieves multi-functionality by enabling operation across multiple frequency bands (first, second, and third resonant frequencies) through a single integrated structure with varied gap regions. This universal design maintains consistent performance across wide bandwidth without requiring complex reconfigurable elements or multiple separate antennas.
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 antenna device achieves efficient performance across a large frequency bandwidth with a static physical layout, reducing complexity and interference, suitable for use in mobile devices with multiple radio technologies.
Implementation Method 1
The first gap distance may be configured to provide coupling at the first resonant frequency between the first conductor and the second conductor across the first region of the gap. The second gap distance may be configured to provide coupling at the second resonant frequency between the first conductor and the second conductor across the second region of the gap.
Implementation Method 2
The antenna device may be configured to operate at a first resonant frequency and a second resonant frequency different from the first resonant frequency. The first gap distance may correspond to the first resonant frequency. The second gap distance may correspond to the second resonant frequency.
Implementation Method 3
The first gap distance may be configured to tune an impedance of the antenna device at the first resonant frequency. The second gap distance may be configured to tune the impedance of the antenna device at the second resonant frequency.
Data Source
Figure 1A
Figure 1B
Figure 1C~1D
AI summary
Described herein are antenna configurations that, in some embodiments, may be advantageously tuned to achieve desired electromagnetic performance over multiple resonant frequencies by providing control, in the design process, over some or all of the desired resonant frequencies. Such antenna configurations, in some embodiments, may be configured to achieve a large frequency bandwidth in a static physical layout, without necessarily resorting to a reconfigurable feed path.