Voltage-Controlled RF Waveguide Switching for Multi-Band Signal Routing
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Solution Overview
Problem
Current RF front-end technologies are limited in flexibility and tunability, particularly in handling various frequency bands and high data rates required for emerging applications like 5G, IoT, and Industry 4.0, as they struggle to efficiently manage power splitting and switching across different frequency ranges, including mm-wave and THz frequencies.
Innovation Solution
The integration of voltage-controlled waveguides with voltage reactive materials such as liquid crystal, transition metal oxide, or electrochromic materials allows for flexible control of RF signals, enabling tunable power splitting and switching devices that can handle multiple frequency bands and high data rates by applying voltage to elements within the waveguide, which can be controlled independently or using look-up tables.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional RF front-end technologies are used, then device simplicity is maintained, but flexibility and tunability across various frequency bands are limited
Solution Approach 1:
The patent implements dynamic control of RF signal paths using voltage-controlled switches and variable attenuators that can be adjusted in real-time. The switch matrix and attenuator elements are controlled by digital signals to dynamically route and attenuate RF signals across different frequency bands, enabling the system to adapt its configuration based on operational requirements without physical reconfiguration.
Solution Approach 2:
The patent creates a universal RF frontend architecture that can handle multiple frequency bands (sub-6 GHz, mmWave, THz) and various communication standards through a single integrated waveguide structure. The common path and branch paths with voltage-controlled components provide multi-functional capability to support different service types including eMBB, URLLC, and mMTC within the same hardware platform.
2Adaptability or versatility
If fixed RF signal paths are used, then device complexity is reduced, but adaptability to different frequency bands and standards is limited
Solution Approach 1:
The patent implements dynamic control of RF signal paths using voltage-controlled switches and variable attenuators that can be adjusted in real-time. The switch matrix and attenuator elements are controlled by digital signals to dynamically route and attenuate RF signals across different frequency bands, enabling the system to adapt its configuration based on operational requirements without physical reconfiguration.
Solution Approach 2:
The patent segments the RF signal path into a common path and multiple branch paths, each equipped with independent voltage-controlled switches and attenuators. This segmentation allows selective activation of different signal paths for different frequency bands and service types, providing fine-grained control over signal routing while maintaining overall system simplicity through modular architecture.
3Adaptability or versatility
If voltage reactive materials are integrated into waveguides, then tunability and flexibility are improved, but manufacturing complexity increases
Solution Approach 1:
The patent employs voltage reactive materials whose electromagnetic properties can be dynamically changed by applying control voltages. This allows continuous tuning of impedance, phase, and amplitude characteristics of the waveguide components without physical modification, enabling flexible adaptation to different frequency bands and signal conditions while maintaining a fixed physical structure that is relatively simple to manufacture.
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 solution provides flexible and efficient RF signal management, enabling effective power splitting and switching across various frequency ranges, supporting advanced applications like multi-antenna systems and mm-wave communications with reduced need for specific designs, thereby enhancing sustainability and cost-effectiveness.
Implementation Method 1
the voltage reactive material is one of the following: liquid crystal, transition metal oxide or electrochromic material
Implementation Method 2
the voltage reactive material is one of the following: liquid crystal, transition metal oxide or electrochromic material
Data Source
AI summary
An apparatus that is a voltage-controlled splitting and/or switching apparatus comprising a waveguide for a radio frequency signal comprising at least one input and at least two outputs, wherein the waveguide is a cavity waveguide or a polymer microwave fiber waveguide, and the waveguide comprises at least a first branch and a second branch, at least one element comprising voltage reactive material in between electrodes and extending, at least partly, across at least one of the first branch and the second branch, and a voltage control caused to apply voltage to the at least one element.