Antenna Module Ground Layer Protrusions for mmWave Isolation
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Solution Overview
Problem
Current antenna modules for mmWave communications face challenges such as signal loss due to high-frequency signal absorption, limited antenna layout space, increased interference between antenna and IC components, and higher costs, which affect antenna performance and size.
Innovation Solution
The proposed antenna apparatus and module design incorporates a unique ground layer structure with protruding and recessed regions to enhance electromagnetic isolation, improve antenna performance, and reduce size by optimizing the distance between antenna patterns and ground layers, while maintaining effective signal transmission and reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a traditional structure with IC and antenna connected by coaxial cable is used, then antenna performance can be maintained, but antenna layout space is insufficient and the degree of freedom of antenna shape is limited
Solution Approach 1:
The patent integrates the antenna pattern, feed line, and ground layers into a single planar structure on the connection member, eliminating the need for separate IC and coaxial cable components. This merging approach increases antenna layout space while maintaining performance through direct integration.
Solution Approach 2:
The patent transitions from a three-dimensional coaxial cable connection to a two-dimensional planar integration on the connection member surface. This dimensional change allows for optimized antenna patterns and feed line routing while increasing layout flexibility and space utilization.
2Reliability
If antenna and IC are connected by coaxial cable, then antenna performance can be maintained, but interference between antenna and IC increases
Solution Approach 1:
The patent extracts the antenna pattern and feed line from the traditional IC-coaxial cable assembly and integrates them directly onto the connection member. This separation of functions reduces electromagnetic interference between the antenna and IC components while maintaining antenna performance.
Solution Approach 2:
The connection member serves as an intermediary substrate that hosts both the antenna pattern and feed line structure. This intermediate platform provides electromagnetic isolation and controlled impedance routing, reducing interference while enabling direct integration.
3Reliability
If traditional antenna module structure is used, then antenna performance can be maintained, but size and cost of antenna module increase
Solution Approach 1:
The patent merges multiple components (antenna pattern, feed line, ground layers, and IC interface) into a single integrated connection member structure. This consolidation reduces the overall antenna module size while maintaining performance through optimized planar geometry.
Solution Approach 2:
The connection member serves multiple functions simultaneously: it provides the antenna pattern, supports the feed line, establishes ground references, and interfaces with the IC. This multi-functionality reduces the number of separate components needed, thereby reducing size and cost.
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 design improves antenna gain, reduces electromagnetic noise, and enhances bandwidth, enabling efficient mmWave communication while minimizing the size and cost of the antenna module.
Implementation Method 1
a first ground layer including surface disposed above or below the feed line and spaced apart from the feed line; and an antenna pattern electrically connected to an end of the feed line and configured to transmit and/or receive a radio frequency (RF) signal
Implementation Method 2
an antenna pattern electrically connected to an end of the feed line and configured to transmit and/or receive a radio frequency (RF) signal
Data Source
AI summary
An antenna apparatus includes: a feed line; a first ground layer including surface disposed above or below the feed line and spaced apart from the feed line; and an antenna pattern electrically connected to an end of the feed line and configured to transmit and/or receive a radio frequency (RF) signal, wherein the first ground layer includes a first protruding region protruding in a first longitudinal direction of the surface toward the antenna pattern and at least partially overlapping the feed line above or below the feed line, and second and third protruding regions protruding in the first longitudinal direction from positions spaced apart from the first protruding region in opposite lateral directions of the surface.