High Frequency Relay Impedance Control via Insulated Shielding
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Solution Overview
Problem
High frequency relays face challenges in reducing variation in characteristic impedance and improving high frequency characteristics beyond isolation improvements.
Innovation Solution
Incorporating an insulating outer housing with a base and a box-shaped case, a relay body with an electromagnet and contact mechanism unit, and a shield member covered by an insulator to create a space between relay terminals and the shield member, reducing variation in characteristic impedance and enhancing high frequency performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the relay body is covered with a base and lid including conductor layers with grounding function to improve isolation characteristic, then the isolation characteristic is improved, but the variation in characteristic impedance cannot be reduced and high frequency characteristics cannot be improved
Solution Approach 1:
The patent divides the grounding structure into separate functional parts: the base and lid provide isolation grounding, while additional grounding members are strategically positioned near relay terminals to control impedance. This segmentation allows independent optimization of isolation characteristics and impedance control without mutual interference.
Solution Approach 2:
The patent introduces intermediary grounding members as mediator elements between the relay terminals and the main grounding structure. These intermediate grounding members serve as impedance control elements that mediate the electromagnetic field distribution, reducing characteristic impedance variation while maintaining the isolation function of the base and lid.
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 insulator between the relay terminals and the shield member reduces variation in characteristic impedance, thereby enhancing high frequency characteristics and improving the overall performance of the high frequency relay.
Implementation Method 1
an insulator capable of insulating the relay terminal and the shield member is provided between the plate surface of the relay terminal and the shield member
Implementation Method 2
an electromagnet unit and a contact mechanism unit, the electromagnet unit being able to be supplied with a current, the contact mechanism unit being opened and closed by supplying a current to the electromagnet unit
Data Source
AI summary
A high frequency relay is provided with an insulating outer housing, a relay body including an electromagnet unit and a contact mechanism unit, and a shield member. The relay body has a plate-like relay terminal, and the relay terminal is disposed such that the plate surfaces of the relay terminal extend along second surfaces of the relay body and one of the plate surfaces is exposed from at least one of the second surfaces. On the second surface, an insulator capable of insulating the relay terminal and the shield member is provided between the plate surface of the relay terminal and the shield member.