Patch Antenna With Coupled Linear Conductor for Orthogonal Gain
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Solution Overview
Problem
Existing antenna units, such as those described in Patent Document 1, have limited antenna gain in directions orthogonal to the normal direction of the flat radiating element, as radio waves are mainly radiated in the normal direction.
Innovation Solution
An antenna device comprising a dielectric substrate with a patch antenna and a supporting member, where linear conductors are used to fix the antenna device's position orthogonally and are electromagnetically coupled with the patch antenna to act as a linear antenna, enhancing radiation in the orthogonal direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a flat patch antenna is used for radiation, then radiation in the normal direction is achieved, but antenna gain in the orthogonal direction is small
Solution Approach 1:
The patent combines a patch antenna (for normal direction radiation) with a linear conductor (for orthogonal direction radiation) into a single antenna device. The linear conductor is positioned to extend beyond the patch antenna edges and is electromagnetically coupled to it, creating a hybrid structure that radiates effectively in both normal and orthogonal directions simultaneously.
Solution Approach 2:
The patent transitions from a two-dimensional patch antenna (radiating primarily in the normal direction) to a three-dimensional antenna structure by adding a linear conductor that extends in the orthogonal direction. This dimensional extension enables the antenna to radiate effectively in multiple spatial directions, improving overall radiation coverage.
2Adaptability or versatility
If only a patch antenna is used, then the structure is simple, but radiation capability in orthogonal direction is limited
Solution Approach 1:
The linear conductor serves multiple functions: it acts as a radiating element for orthogonal direction radiation, provides structural support for positioning the patch antenna, and creates electromagnetic coupling to enhance overall radiation efficiency. This multi-functionality reduces the need for separate components.
Solution Approach 2:
The linear conductor automatically provides both structural support and radiation functionality through its geometric configuration. By simply extending beyond the patch antenna edges in the orthogonal direction, it self-organizes to create the necessary electromagnetic coupling and radiation pattern without requiring additional complex mechanisms.
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 increases antenna gain in the direction orthogonal to the normal direction of the radiating element by exciting the linear conductors coupled with the radiating elements, allowing efficient radiation of radio waves in both the normal and orthogonal directions.
Implementation Method 1
a linear conductor that fixes a relative position between the antenna device and the supporting member in a direction orthogonal to a normal direction of the dielectric substrate and of which at least a part is electromagnetically coupled with the patch antenna to act as a linear antenna
Data Source
AI summary
An antenna device is supported by a supporting member. The antenna device includes a dielectric substrate and a patch antenna. The patch antenna comprises a radiating element and a ground conductor that are provided to the dielectric substrate. The linear conductor fixes a relative position between the antenna device and the supporting member in a direction orthogonal to a normal direction of the dielectric substrate. At least a part of the linear conductor is electromagnetically coupled with the patch antenna to act as a linear antenna.