Grounded Parasitic Patch Antenna for Low-Elevation Gain
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Solution Overview
Problem
When a patch antenna is reduced in size, the area of its ground base decreases, leading to a decrease in gain at low elevation angles.
Innovation Solution
A patch antenna design incorporating a dielectric member with a radiating element and at least one parasitic element grounded in its surrounding region, which operates as a director to enhance gain at low elevation angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the patch antenna is reduced in size, then the antenna device can be miniaturized, but the gain at low elevation angles decreases
Solution Approach 1:
The patent introduces parasitic elements positioned in three-dimensional space around the radiating element, utilizing vertical and radial dimensions to enhance gain without increasing the horizontal footprint. The parasitic elements are arranged at specific heights and radial distances from the radiating element, creating a three-dimensional antenna structure that improves low elevation angle gain while maintaining a compact overall size.
2Area of stationary object
If the ground base area is reduced, then the antenna device size is reduced, but the gain at low elevation angles deteriorates
Solution Approach 1:
The parasitic elements act as intermediary structures between the radiating element and the ground plane. These elements are positioned at specific distances from the radiating element and are grounded through support structures, creating an intermediate electromagnetic field distribution that enhances low elevation angle gain without requiring a large ground base area.
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 gain of the patch antenna is improved at low elevation angles, enabling efficient reception of incoming radio waves.
Implementation Method 1
at least one parasitic element provided in a surrounding region of the dielectric member and the radiating element, the at least one parasitic element being grounded
Implementation Method 2
the gain of a patch antenna at low elevation angles is improved
Data Source
AI summary
A patch antenna includes: a dielectric member; a radiating element provided at the dielectric member; and at least one parasitic element provided in a surrounding region of the dielectric member and the radiating element, the at least one parasitic element being grounded. Further, the at least one parasitic element includes a plurality of parasitic elements, the plurality of parasitic elements are provided in the surrounding region of the radiating element, and the plurality of parasitic elements are each provided at a position away from an outer edge of the radiating element by a predetermined distance.