Loop Antenna Substrate Polarized Wave Ratio
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing antenna apparatuses for wireless communication devices face challenges in achieving high gain while maintaining a constant polarized wave ratio, especially when a conductive object approaches, which increases manufacturing costs due to the need for balance-unbalance conversion circuits and limits the antenna's ability to receive both vertical and horizontal polarized waves effectively.
Innovation Solution
An antenna apparatus comprising a ground substrate and a loop antenna with perpendicular polarized wave surfaces, where the substrate functions as an equivalent dipole antenna, maintaining a constant polarized wave ratio by ensuring the substrate's polarized wave ratio matches that of the loop antenna, thus providing high gain without relying on conductive objects and reducing manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a balance-unbalance conversion circuit is used to reduce current to the substrate, then the substrate does not function as an antenna and the polarized wave ratio is secured, but the manufacturing cost increases
Solution Approach 1:
The patent extracts and eliminates the balance-unbalance conversion circuit from the antenna system. Instead of using the circuit to prevent substrate antenna effect, the design accepts the substrate as part of the radiating structure and optimizes its geometry to achieve the desired polarized wave ratio directly through the loop antenna configuration
Solution Approach 2:
The loop antenna structure is designed to self-regulate the current distribution and polarized wave ratio through its geometric configuration. The substrate serves dual purposes as both mounting platform and radiating element, with the loop antenna's orientation and dimensions automatically balancing the vertical and horizontal polarized wave components without requiring external control circuits
2Device complexity
If only the loop antenna device is used to receive both vertical and horizontal polarized waves, then the structure is simple, but it is difficult to obtain high gain
Solution Approach 1:
The patent merges the loop antenna with the substrate to form an integrated antenna system. The loop antenna and substrate work together as a unified radiating structure, where the substrate extends the effective radiating area and the loop antenna provides the polarized wave reception capability, achieving high gain without increasing structural complexity
Solution Approach 2:
The loop antenna is oriented perpendicular to the substrate plane, utilizing the third dimension (vertical orientation) to achieve both polarized wave reception and high gain. This spatial arrangement allows the antenna to effectively receive signals from multiple directions while maintaining a compact planar structure
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 antenna apparatus achieves high gain and a constant polarized wave ratio regardless of the presence of conductive objects, ensuring non-directionality and efficient communication performance, while simplifying manufacturing and reducing costs by eliminating the need for balance-unbalance conversion circuits.
Implementation Method 1
The substrate provides an antenna, which is excited and vibrated together with the loop antenna. The antenna has a first polarized wave component in parallel to the first polarized wave surface and a second polarized wave component in parallel to the second polarized wave surface.
Data Source
AI summary
An antenna apparatus includes: a ground substrate; and a loop antenna having first and second polarized wave surfaces, which are perpendicular to the substrate. The substrate provides an antenna, which is excited and vibrated together with the loop antenna. The antenna has a first polarized wave component in parallel to the first polarized wave surface and a second polarized wave component in parallel to the second polarized wave surface. A polarized wave ratio between the first polarized wave component and the second polarized wave component in the substrate is substantially equal to a polarized wave ratio between the first polarized wave surface and the second polarized wave surface in the loop antenna.