Non-Uniform Width Antenna Elements for Wider Radiation Coverage
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Solution Overview
Problem
Directional antennas have a limited range of radiation directions for transmitting and receiving radio waves, which restricts their effectiveness in various applications.
Innovation Solution
The antenna design features a dielectric layer with conductive radiation elements on one surface and a conductive ground layer on the other, where the radiation elements have non-uniform widths that gradually decrease towards their vertices, allowing for a wider range of radiation directions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a directional antenna is designed to strongly transmit and receive radio waves in a specific direction, then the transmission and reception strength in that direction is improved, but the range of radiation directions is limited
Solution Approach 1:
The radiation element employs a non-uniform width design where the width varies along the length of the element. Specifically, the width is larger at the center portion and gradually decreases toward the end portions. This local variation in geometric properties creates multiple radiation patterns that work together to broaden the overall radiation direction range while maintaining strong transmission and reception in specific directions
Solution Approach 2:
The patent changes the geometric parameter of the radiation element by implementing a non-uniform width profile instead of a uniform width. This parameter change affects the current distribution along the element, creating multiple resonant modes that expand the radiation pattern coverage while preserving directional transmission and reception capabilities
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 enhances the antenna's ability to transmit and receive radio waves over a broader range of directions, improving its performance and versatility.
Implementation Method 1
an antenna having a wide range of a radiation direction in which a radio wave can be strongly transmitted and received
Data Source
AI summary
An antenna includes a dielectric layer, a conductive ground layer formed on a first main surface of the dielectric layer, and radiation elements formed on a second main surface of the dielectric layer and are conductive. The first radiation element includes a first non-uniform width part that has a width in a direction parallel to a first side in a linear shape opposed to a first vertex, and the width of the first non-uniform width part gradually decreases in a direction from the first side to the first vertex. The second radiation element includes a second non-uniform width part that has a width in a direction parallel to a second side in a linear shape opposed to a second vertex, and the width of the second non-uniform width part gradually decreases in a direction from the second side to the second vertex.