Balun Antenna Coupling Structure for Interference Current Mitigation
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Solution Overview
Problem
Antennas are susceptible to interference currents, which affect their radiation characteristics, leading to reduced performance due to re-radiation and superimposition of high-frequency radiation currents in low-frequency antennas.
Innovation Solution
The antenna incorporates a coupling structure, such as an L-shaped stub, disposed on a balun and radiation structure to mitigate or eliminate interference currents, thereby reducing the impact on radiation characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple antennas (high-frequency and low-frequency) operate in close proximity, then the antenna system can provide multi-frequency communication capabilities, but radiation currents from one antenna induce interference currents in the other antenna, degrading radiation performance
Solution Approach 1:
The patent introduces a coupling structure as an intermediary element between the high-frequency antenna and low-frequency antenna. This coupling structure acts as a mediator that manages the electromagnetic interaction between the two antennas, allowing them to coexist without severe interference while maintaining multi-frequency operation capabilities
2Reliability
If a coupling structure is added to eliminate interference currents, then radiation performance is improved, but device complexity increases
Solution Approach 1:
The coupling structure's parameters (such as length, width, position, and geometric configuration) are specifically optimized to achieve effective interference cancellation. By carefully adjusting these parameters, the structure eliminates harmful interference currents while maintaining a relatively simple overall design, thus improving radiation performance without excessive complexity
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 coupling structure effectively decouples interference currents, minimizing their impact on the antenna's radiation performance and reducing re-radiation, thereby enhancing the antenna's operational efficiency and reducing interference between antennas.
Implementation Method 1
The coupling structure is configured to eliminate or mitigate an interference current, to reduce radiation of the antenna on the interference current
Data Source
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AI summary
Embodiments of this application disclose an antenna. The antenna includes a balun structure, a radiation structure disposed on the balun structure, and a coupling structure disposed on the radiation structure. The coupling structure is configured to eliminate or mitigate an interference current, to reduce impact of the interference current on the antenna, thereby reducing radiation of the antenna on the interference current.