Reconfigurable RF MEMS Antenna for Adjacent Frequency Band Interference
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Solution Overview
Problem
Current technologies lack a method to effectively filter out mutual interference between adjacent frequency bands using reconfigurable antennas, which is crucial for efficient spectrum utilization in wireless communication systems.
Innovation Solution
A system utilizing reconfigurable RF MEMS antennas with an RF MEMS switch control module that determines and filters out interference by adjusting the antenna structures in response to coupling signals from different frequency bands, enabling coexistence of adjacent frequency bands and minimizing mutual interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a filter with excellent performance is added to transmitting and receiving terminals to improve insulation of adjacent frequency bands, then insulation performance is improved, but device complexity increases
Solution Approach 1:
The patent combines the insulation function with the antenna structure itself by designing specific ground patterns (first and second ground patterns with different configurations) that inherently provide frequency band isolation. This merges the filtering function into the antenna design, eliminating the need for separate filters and reducing device complexity while maintaining insulation performance.
Solution Approach 2:
The antenna structure is designed to perform multiple functions simultaneously: radiation and frequency-selective insulation. The first and second ground patterns are configured to work together to provide both the radiating function and the insulation function against adjacent frequency bands, making the antenna a multi-functional component that eliminates the need for additional filtering devices.
2Reliability
If antenna structure is optimized for one frequency band, then performance in that band is improved, but adaptability to other frequency bands deteriorates
Solution Approach 1:
The patent employs a reconfigurable antenna structure where the ground patterns can be dynamically adjusted between different states. The first and second ground patterns are designed to be configurable, allowing the antenna to adapt its electrical characteristics to optimize performance for different frequency bands while maintaining reliable operation across multiple bands.
Solution Approach 2:
The ground structure is segmented into distinct first and second ground patterns that can be independently configured. This segmentation allows each ground pattern to be optimized for specific frequency bands while working together to provide broad frequency coverage, enabling the antenna to maintain reliable performance across multiple bands through selective configuration.
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 solution allows for effective filtering of adjacent frequency band interference, enabling the coexistence of multiple frequency bands on hardware and reducing mutual interference, thereby optimizing spectrum utilization in communication systems.
Implementation Method 1
changes an electrical length or current trend of an antenna to change an antenna radiation pattern, polarization or frequency
Implementation Method 2
receives a first transmitted coupling signal from a first frequency band RF module and a second received coupling signal from a second frequency band RF module
Implementation Method 3
With the mature development of Radio Frequency Micro Electro Mechanical System (RF MEMS) switch technology
Data Source
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AI summary
Provided are a method and a system for filtering out adjacent frequency band interference. The method includes that an RF MEMS switch control module receives a first transmitted coupling signal from a first frequency band RF module and a second received coupling signal from a second frequency band RF module; the RF MEMS switch control module determines whether interference exists between a first frequency band and a second frequency band according to the first transmitted coupling signal and the second received coupling signal; if interference exists, the RF MEMS switch control module filters out the interference by instructing a first frequency band RF MEMS radio frequency reconfigurable antenna working in the first frequency band to change a first antenna structure and/or by instructing a second frequency band RF MEMS radio frequency reconfigurable antenna working in the second frequency band to change a second antenna structure. By means of the disclosure, adjacent frequency bands can co-exist on hardware and mutual interference is effectively avoided.