Multi-Band Antenna Gap Structure for Static Wideband Tuning
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Solution Overview
Problem
Conventional antenna designs face challenges in achieving wide frequency bandwidth without excessive complexity or space consumption, as physical layouts optimized for one part of the frequency band often degrade performance in another part, and adding dedicated antennas for different frequency segments can lead to interference and increased complexity.
Innovation Solution
The antenna device features a dielectric support with conductors spaced by gaps of varying distances, allowing for tuning of impedance and coupling at multiple resonant frequencies, enabling operation across a large frequency range without reconfigurability, using a static physical layout.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If dedicated antennas are provided for each radio technology and frequency band, then each radio technology can operate in its specific frequency band, but the device complexity increases and space consumption increases
Solution Approach 1:
The patent implements a single antenna structure that can operate across multiple frequency bands (e.g., 700 MHz, 1700 MHz, 2600 MHz) by using a gap between conductors that supports multiple resonant frequencies. This multi-functional antenna replaces multiple dedicated antennas, reducing device complexity while maintaining adaptability to different radio technologies and frequency bands.
2Reliability
If the physical layout of the antenna is optimized for one part of the frequency band, then performance is improved in that specific band, but performance degrades in other parts of the frequency band
Solution Approach 1:
The patent applies local quality by creating regions within the antenna gap that have different gap distances. Specifically, the gap between conductors includes a first region with a first gap distance and a second region with a second gap distance, where each region is optimized for different resonant frequencies. This allows the antenna to maintain reliable performance across multiple frequency bands by having different local characteristics tailored to specific frequency requirements.
3Adaptability or versatility
If multiple dedicated antennas are added for different frequency segments, then frequency bandwidth coverage is improved, but interference between antennas increases and device complexity increases
Solution Approach 1:
The patent merges multiple antenna functions into a single antenna structure. By combining multiple resonant frequencies into one antenna design using varying gap distances, the patent eliminates interference between separate antennas while maintaining comprehensive frequency bandwidth coverage. The single integrated antenna structure avoids the harmful interactions that would occur with multiple separate antennas in close proximity.
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
This configuration allows for efficient electromagnetic performance across multiple resonant frequencies, reducing complexity and interference while maintaining compactness, suitable for use in mobile devices operating across various 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
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.