Filters for communication equipment
The filter addresses thickness and weight issues by using a folding method to create a cavity with resonators and notch forming sections, enabling compact and efficient frequency characteristics in communication devices.
JP7876066B2Active Publication Date: 2026-06-18KMW INC
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- KMW INC
- Filing Date
- 2023-10-13
- Publication Date
- 2026-06-18
AI Technical Summary
⚠Technical Problem
Conventional radio frequency filters face challenges in reducing thickness and weight due to the extension of resonators within the cavity and the need for conductive material components for coupling, which limits their application in antenna devices with Massive MIMO technology.
⚗Method used
A filter design that forms a cavity using a folding method with a base plate, incorporating resonators and notch forming sections for inductive and capacitive coupling, allowing for a slim and lightweight structure with diverse frequency characteristics.
🎯Benefits of technology
The filter achieves a compact size and enhanced frequency characteristics by forming a cavity through folding, facilitating notch design on both sides of the passband and reducing material usage.
✦ Generated by Eureka AI based on patent content.
Smart Images
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Abstract
A filter for communication equipment is provided that can simplify the complexity of the filter and achieve a variety of filter performances. [Solution] The filter for a communication device includes notch forming portions that are arranged relatively closer than the separation distance between the portions where magnetic field coupling or electric field coupling is dominant of each of the adjacent resonant elements among at least three or more adjacent resonant elements selected sequentially along the longitudinal direction of the cavity for multipath coupling, and form predetermined notches at the left and right ends of the passband to limit the range of filtering frequencies.
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