Dual-Polarized Coupling Device Annular Groove Isolation
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Solution Overview
Problem
Conventional coupling antennas suffer from poor isolation between feed conductors, leading to noise generation during wireless signal transmission.
Innovation Solution
A coupling device with a substrate, ground element, and feed conductors is designed, featuring an annular groove and feed slot that improves port and polarization isolation by strategically positioning and shaping the conductors to couple current and magnetic signals effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional coupling antenna structure is used, then device complexity is low, but isolation between feed conductors is poor leading to noise generation
Solution Approach 1:
The ground element is segmented into first and second portions with an annular groove between them, creating distinct functional zones that improve isolation between feed conductors while maintaining overall structural integrity
Solution Approach 2:
The annular groove is nested within the ground element structure, creating a concentric configuration that enhances isolation without significantly increasing overall device footprint or complexity
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 provides enhanced port isolation and polarization isolation, as evident from the reduced signal reflection and improved scattering parameters, effectively mitigating noise issues during wireless signal transmission.
Implementation Method 1
The first feed conductor couples the ground element to feed a current signal
Implementation Method 2
The second feed conductor couples the feed slot to feed a magnetic current
Data Source
AI summary
A coupling device is provided, including a substrate, a ground element, a first feed conductor and a second feed conductor. The substrate includes a first surface and a second surface. The ground element is disposed on the second surface, wherein the ground element includes a first portion, a second portion, an annular groove and a feed slot, the annular groove is located between the first portion and the second portion, enclosing the first portion, and a first end of the feed slot is connected to the annular groove. The first feed conductor is disposed on the first surface corresponding to the annular groove, wherein the first feed conductor couples the ground element to feed a current signal. The second feed conductor is disposed on the first surface corresponding to the feed slot, wherein second feed conductor couples the feed slot to feed a magnetic current.