Antenna Impedance Bandwidth Extension via Coupled Conductors
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current mobile communication devices face challenges in achieving multiband operation due to limited antenna space, necessitating enhanced impedance bandwidth to accommodate different communication systems without requiring frequent device changes.
Innovation Solution
The integration of a current-drawing conductor structure with mutual coupling portions and a coupling conductor structure, which forms an effective extending ground for the antenna, allowing it to generate multiple resonant modes and enhance impedance bandwidth, thereby supporting various communication bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If mobile communication devices integrate more communication systems, then communication versatility is improved, but antenna space is reduced
Solution Approach 1:
The antenna system is segmented into multiple functional components: the original antenna element, the current-drawing conductor structure with multiple conductor elements, and the coupling conductor structure. Each segment serves specific functions to achieve multiband operation within limited space.
Solution Approach 2:
The patent extends the ground structure into three-dimensional space by adding the current-drawing conductor structure and coupling conductor structure. This creates an extended ground that utilizes vertical and lateral dimensions to achieve multiband resonance without increasing the planar antenna area.
2Area of moving object
If antenna space is reduced, then device compactness is improved, but impedance bandwidth is reduced
Solution Approach 1:
The current-drawing conductor structure is configured to draw current at specific positions to generate multiple resonant modes. By dynamically adjusting the current distribution through the coupling structure, the antenna achieves wide impedance bandwidth across multiple bands despite compact physical dimensions.
Solution Approach 2:
The patent changes the electrical parameters of the antenna system by introducing the coupling conductor structure and current-drawing conductor structure. These structures modify the resonant frequencies and impedance characteristics, enabling wide bandwidth operation in a compact form factor.
3Reliability
If coupling conductor structure is added, then impedance bandwidth is enhanced, but device complexity is increased
Solution Approach 1:
The coupling conductor structure is merged with the existing antenna and ground structures to form an integrated multiband antenna system. The current-drawing conductor structure combines multiple conductor elements with mutual coupling portions, reducing the need for separate components and simplifying the overall device complexity.
Solution Approach 2:
The coupling conductor structure serves multiple functions simultaneously: it acts as an extended ground, provides coupling between different resonant modes, and enables multiband operation. This multi-functionality reduces the need for additional separate components, thereby managing device complexity while enhancing impedance bandwidth.
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 effectively increases the impedance bandwidth of the antenna, enabling it to transmit or receive electromagnetic signals across multiple communication bands, while also reducing specific absorption rate (SAR) and hearing aid compatibility (HAC) values.
Implementation Method 1
there is at least one mutual coupling portion formed between neighboring conductor elements
Implementation Method 2
generate multiple resonant modes and enhance impedance bandwidth
Implementation Method 3
There is at least one coupling portion formed between the second conductor portion and the current-drawing conductor structure
Data Source
AI summary
A communication device and a method for enhancing impedance bandwidth of an antenna are provided. The communication device includes at least one ground, at least one antenna, a current-drawing conductor structure, and at least one coupling conductor structure. The antenna is electrically connected to the ground through a source and generates at least one operating frequency band for transmitting or receiving electromagnetic signals of at least one communication band. The current-drawing conductor structure includes a plurality of conductor elements, where there is at least one mutual coupling portion formed between neighboring conductor elements. The coupling conductor structure has a first conductor portion and a second conductor portion. One end of the first conductor portion is electrically connected to the ground, and another end thereof is electrically connected to the second conductor portion. There is at least one coupling portion formed between the second conductor portion and the current-drawing conductor structure.