Antenna System With Perpendicular Current Paths
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Solution Overview
Problem
Conventional wireless communication apparatus with full-metal housing experiences signal attenuation and dead zones due to the shielding effect of metal, which affects the antenna system's impedance bandwidth and radiation characteristics.
Innovation Solution
The antenna system includes a grounding portion with a ground plane and a conducting element perpendicular to it, a main radiating portion parallel to the ground plane, and a short circuit portion connecting the radiating portion to the conducting element, creating three perpendicular current paths that maintain signal quality even when shielded by a metal housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a full-metal housing is used for better appearance and texture, then the aesthetic quality is improved, but the antenna system experiences signal attenuation and dead zones due to shielding effect
Solution Approach 1:
The antenna system is segmented into three perpendicular current paths (first current path through conducting element, second current path through main radiating portion, third current path through short circuit portion) that operate independently. This segmentation allows the antenna to maintain multiple signal transmission channels, improving reliability while coexisting with metal housing by distributing the radiation function across multiple orthogonal directions.
2Reliability
If non-metallic material is used for housing near the antenna, then signal transmission quality is improved, but the appearance and texture characteristics are degraded
Solution Approach 1:
The invention converts the harmful shielding effect of metal housing into a beneficial configuration by designing the antenna system with three perpendicular current paths that exploit the metal housing's presence. The metal housing becomes part of the grounding system, and the antenna elements are positioned and oriented to radiate effectively despite the metal enclosure, turning the previously harmful shielding into a structured radiation pattern.
3Ease of manufacture
If conventional antenna system is configured in full-metal housing, then manufacturing cost is reduced, but dead zones and signal attenuation problems arise
Solution Approach 1:
The invention changes the parameter of current path orientation from conventional single-plane configurations to three perpendicular directions. By orienting current paths along x, y, and z axes, the antenna system achieves omnidirectional radiation characteristics that overcome the shielding effects of metal housing, maintaining signal quality while allowing full-metal construction.
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 configuration ensures similar horizontal and vertical radiation pattern magnitudes, allowing effective signal transmission and reception in multipath environments, maintaining communication quality despite being housed in a metal enclosure.
Implementation Method 1
The antenna body includes a main radiating portion and a short circuit portion. The main radiating portion is parallel to the ground plane and provides a second current path. An end of the main radiating portion is electrically connected to a signal source.
Data Source
AI summary
A wireless communication apparatus and an antenna system therein are provided. The antenna system includes a grounding portion and an antenna body. The grounding portion includes a ground plane and a conducting element. The conducting element is perpendicular to the ground plane and is connected to the ground plane to provide a first current path. The antenna body includes a main radiating portion and a short circuit portion. The main radiating portion is parallel to the ground plane and provides a second current path. An end of the main radiating portion is electrically connected to a signal source. The short circuit portion is electrically connected between the main radiating portion and the conducting element and provides a third current path. The directions of the first current path, the second current path and the third current path are perpendicular mutually.