Patch Antenna Bent Ground Structure for Directional Gain
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The reduction in the size of a patch antenna leads to a decrease in gain in the direction of radiation due to radio waves being emitted opposite to the intended direction.
Innovation Solution
A patch antenna design featuring a ground conductor with bent portions extending from a main body portion towards a radiating element, creating wave sources that align with the direction of radiation to suppress unwanted radiation and maintain gain.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the area of the ground conductor is reduced to downsize the patch antenna, then the antenna size is reduced, but radio waves are emitted in the opposite direction resulting in reduced gain in the radiation direction
Solution Approach 1:
The ground conductor is divided into a first ground conductor and a second ground conductor that are positioned at different locations. The first ground conductor has a first area and the second ground conductor has a second area, allowing the antenna to be downsized while maintaining proper grounding function through distributed ground structures rather than a single large ground plane
Solution Approach 2:
The patent transitions from a conventional single-plane ground structure to a three-dimensional arrangement with ground conductors at different positions and heights. This spatial distribution allows the antenna to maintain radiation performance while reducing the footprint area, effectively solving the contradiction between size reduction and gain maintenance
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
The design allows for downsizing the antenna while maintaining or enhancing gain in the intended direction of radiation, and adjusting the half-power angle without additional components.
Implementation Method 1
a wave source is generated between the second element and the first bent portion
Data Source
AI summary
A patch antenna includes: a first element; and a second element located so as to face the first element, wherein the first element includes a first main body portion facing the second element, and at least one first bent portion extending from the first main body portion toward the second element, and a wave source is generated between the second element and the first bent portion.