Dielectric-Loaded Patch Antenna Layout for Higher Gain
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Solution Overview
Problem
There is a limit to increasing antenna gain in patch antennas by loading dielectric blocks on radiating electrodes, as the length of feed lines increases with more electrodes, leading to transmission line loss and diminished gain effectiveness.
Innovation Solution
An antenna device is designed with a substrate, radiating electrodes, and dielectric members that include two dielectric block portions disposed across the geometric center of the radiating electrode, allowing for increased antenna gain while reducing the number of radiating electrodes and shortening feed line lengths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the number of radiating electrodes is increased to obtain desired antenna gain, then antenna gain is improved, but feed line length increases resulting in transmission line loss
Solution Approach 1:
The patent changes the dielectric configuration from a single block to two separate blocks positioned at specific locations. This parameter change in the dielectric structure modifies the electromagnetic field distribution and impedance characteristics, enabling improved antenna gain with fewer radiating electrodes, thus reducing feed line length and transmission losses.
Solution Approach 2:
The patent applies dielectric blocks at specific local positions (both above and below the radiating electrode) rather than uniformly across all electrodes. This localized application optimizes the electromagnetic performance at critical points, achieving desired gain with minimal number of radiating elements and shorter feed lines.
2Power
If a single dielectric block completely covers the radiating electrode, then aperture efficiency is improved, but antenna gain increase is limited
Solution Approach 1:
The patent segments the dielectric structure into two separate blocks positioned at different locations (above and below the radiating electrode). This segmentation creates more flexible electromagnetic field control and achieves superior antenna gain compared to a single monolithic dielectric block, while maintaining manageable device complexity.
3Power
If two dielectric block portions are disposed across the geometric center of the radiating electrode, then antenna gain is further increased, but device complexity increases
Solution Approach 1:
The patent employs asymmetric positioning of dielectric blocks relative to the radiating electrode, with blocks placed at both above and below positions. This asymmetric configuration optimizes the electromagnetic field distribution and achieves further antenna gain enhancement while maintaining a relatively simple overall structure that does not significantly increase device 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
This configuration enhances antenna gain, reduces transmission loss, and allows for a smaller antenna device, particularly effective in millimeter wave bands.
Implementation Method 1
a dielectric member loaded on the radiating electrode, in which the dielectric member includes two dielectric block portions disposed with a distance in a first direction being an excitation direction of the radiating electrode
Data Source
AI summary
A radiating electrode is disposed with a space from a ground conductor plate included in a substrate, in a thickness direction of the substrate. A dielectric member is loaded on the radiating electrode. The dielectric member includes two dielectric block portions disposed with a distance in an excitation direction of the radiating electrode. The two dielectric block portions are disposed across a geometric center of the radiating electrode in plan view, and, in plan view, a portion of each of the two dielectric block portions overlaps a portion of the radiating electrode and a remaining portion of each of the two dielectric block portions is disposed outside the radiating electrode.