Resonator Decoupling Network for Compact Antenna Isolation
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Solution Overview
Problem
In compact wireless communication systems, radio frequency interference between closely collocated antennas operating at the same or adjacent frequencies significantly affects the quality of service, and existing solutions fail to sufficiently suppress interference between antennas in adjacent frequency bands.
Innovation Solution
A device comprising a network of resonators connected to antennas and transceivers, where coupling coefficients and resonance frequencies are configured to achieve desired isolation and matching, reducing interference between antennas in compact antenna arrays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If spatial isolation between antennas is increased to reduce interference, then isolation between antennas is improved, but the system size increases and compact integration becomes difficult
Solution Approach 1:
A decoupling network is introduced as an intermediary component between the antennas to reduce mutual coupling and interference. The network includes coupling elements and isolation elements that actively manage the electromagnetic interaction between closely spaced antennas, enabling compact integration while maintaining performance.
Solution Approach 2:
The patent modifies electromagnetic parameters by introducing decoupling networks with specific coupling coefficients and isolation characteristics. By adjusting the parameters of the decoupling network (such as coupling element strength and isolation element properties), the system achieves reduced interference without increasing physical separation distance.
2Object-affected harmful factors
If filters are added to suppress interference between frequency bands, then isolation between frequency bands is improved, but device complexity increases
Solution Approach 1:
The decoupling network is designed to perform multiple functions simultaneously: it provides isolation between adjacent frequency bands, reduces mutual coupling between antennas, and maintains impedance matching. This multi-functionality eliminates the need for separate filtering components, reducing overall device complexity.
Solution Approach 2:
The patent combines the functions of interference suppression and antenna decoupling into a single integrated network. The decoupling network simultaneously addresses both the isolation between frequency bands and the mutual coupling between antennas, consolidating multiple filtering functions into one structure.
3Object-affected harmful factors
If active interference suppression circuitry is used to reduce interference, then isolation is improved, but device complexity and power consumption increase
Solution Approach 1:
The decoupling network operates passively using electromagnetic coupling and resonance principles without requiring active control circuits or power consumption. The network automatically adjusts to the operating conditions through its inherent electromagnetic properties, eliminating the need for complex active suppression circuitry.
Solution Approach 2:
The patent replaces active electronic control systems with a passive electromagnetic field-based solution. Instead of using active circuitry with control algorithms and power consumption, the decoupling network uses electromagnetic coupling and resonance effects to achieve interference suppression.
4Adaptability or versatility
If more wireless systems are integrated into compact units, then system functionality is improved, but interference between systems increases
Solution Approach 1:
The decoupling network segments the electromagnetic environment between different wireless systems by introducing isolated coupling paths. Each antenna system is separated by the decoupling network, which manages the electromagnetic interaction independently, allowing multiple systems to coexist in compact integration without mutual interference.
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 effectively enhances isolation between antennas, improving signal quality by achieving desired isolation and matching conditions, even in scenarios where spatial isolation is limited, thereby reducing radio frequency interference.
Implementation Method 1
coupling coefficients among the resonators as well as a resonance frequency of each of the resonators are configured so that a desired isolation among the first set of ports and a desired matching at each of the first set of ports are obtained
Data Source
AI summary
Devices and methods for reducing interference between closely collocated antennas working at the same or adjacent frequencies are disclosed. According to one embodiment, the antenna array comprises a plurality of antennas for transmitting signals from and receiving signals to a plurality of transceivers respectively, and the device comprises a plurality of resonators; a first set of ports, each of which is connected to a respective one of the plurality of transceivers; and a second set of ports, each of which is connected to a respective one of the plurality of antennas; wherein each of the transceivers and the antennas is connected to a respective one of the resonators, and coupling coefficients among the resonators as well as a resonance frequency of each of the resonators are configured so that a desired isolation among the first set of ports and a desired matching at each of the first set of ports are obtained.