Multi-Channel RF Heating Wireless Synchronization to Prevent Hot Spots
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing multi-channel RF devices for heating and drying applications face challenges in frequency synchronization, particularly when channels are spaced apart, leading to intermodulation products and out-of-band emission, which are costly and difficult to manage with traditional wired synchronization methods.
Innovation Solution
The implementation of wireless synchronization between RF channels, where the second channel receives and extracts the frequency of the first RF signal to generate a second RF signal, eliminating the need for physical connections and reducing the requirement for frequency programming, allowing for more efficient and cost-effective operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wired RF synchronization is used with RF splitter and coaxial cables, then frequency synchronization is achieved, but device complexity and cost increase significantly
Solution Approach 1:
The patent replaces the mechanical/wired RF synchronization system (coaxial cables, RF splitters, physical connections) with a wireless electromagnetic signal transmission system. The master channel's RF signal is transmitted wirelessly to slave channels, eliminating the need for physical RF hardware connections while maintaining frequency synchronization.
Solution Approach 2:
The patent introduces a wireless transmission medium as an intermediary between master and slave channels. Instead of direct wired connections, the RF signal acts as a carrier that transmits frequency information wirelessly through the electromagnetic field, serving as a mediator that enables synchronization without physical hardware connections.
2Reliability
If low-frequency synchronization with wired connections is used, then frequency synchronization is achieved, but device complexity and cost increase
Solution Approach 1:
The patent replaces the wired low-frequency synchronization system (LF splitters, transmission lines, physical connections) with a wireless RF signal transmission system. By using the RF signal itself as the synchronization carrier transmitted through wireless electromagnetic fields, the system eliminates all wired LF synchronization hardware.
3Object-generated harmful factors
If isolators are used to limit signal leakage, then out-of-band emission is reduced, but shielding effectiveness is insufficient
Solution Approach 1:
The patent employs frequency synchronization as a software/control-based solution rather than relying on physical shielding components like isolators. By synchronizing frequencies through wireless RF signal transmission, the system achieves emission compliance without needing additional shielding hardware, effectively replacing expensive passive components with an active control mechanism.
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 approach reduces costs and simplifies the extension of multi-channel RF devices by eliminating the need for RF hardware and frequency programming, while preventing hot spots during heating or drying processes, ensuring a more uniform treatment.
Implementation Method 1
the second channel is configured to wirelessly receive the first RF signal transmitted by the first channel
Data Source
AI summary
Example embodiments relate to wireless synchronization for multi-channel RE heating and drying devices. One embodiment includes a multi-channel RF device. The RE device includes a cavity. The RF device also includes a first channel configured to generate a first RF signal and to transmit the first RE signal into the cavity. In addition, the RE device includes a second channel spaced apart and electrically isolated from the first channel. The second channel is configured to wirelessly receive the first RE signal transmitted by the first channel. The second channel is also configured to extract a frequency of the first RE signal from the received first RE signal. In addition, the second channel is configured to generate, based on the extracted frequency, a second RE signal. Further, the second channel is configured to transmit the second RE signal into the cavity.