Horn-Coupled Patch Antenna Array for Warp-Induced Beam Control
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Solution Overview
Problem
Existing patch array antenna systems suffer from beam width widening and increased sidelobe levels due to warping, which compromises the directivity of radio waves.
Innovation Solution
The implementation of a dielectric substrate with a horn member and multiple antenna arrays, featuring horn holes and conductive walls, enhances directivity by maintaining flatness and aligning antenna rows, and includes suppression mechanisms and dielectric covers to improve beam narrowing and gain.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the substrate is made very thin to reduce profile, then the antenna structure becomes more compact, but warping occurs causing beam width widening and increased sidelobe levels
Solution Approach 1:
The patent employs a composite structure combining a thin dielectric substrate with a horn member made of conductive material. This composite design allows the substrate to maintain thinness while the horn member provides structural support to prevent warping, thereby resolving the contradiction between compactness and flatness maintenance.
Solution Approach 2:
The horn member acts as an intermediary element between the thin substrate and the antenna elements. It provides mechanical support to prevent substrate warping while allowing electromagnetic waves to pass through, thus maintaining flatness without compromising the thin profile.
2Area of stationary object
If beam width is widened to compensate for warping, then coverage area increases, but sidelobe level increases reducing directivity
Solution Approach 1:
The horn member introduces local quality variations in the electromagnetic field distribution. By controlling the horn geometry and positioning, the patent achieves localized field concentration that maintains directivity while providing adequate coverage area, resolving the contradiction between coverage and directivity.
3Reliability
If horn member with conductive walls is added to maintain flatness, then directivity is improved, but device complexity increases
Solution Approach 1:
The horn member serves multiple functions simultaneously: it maintains substrate flatness, shapes the electromagnetic beam for improved directivity, and provides mechanical support. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in 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
The proposed antenna device achieves improved directivity and gain in radio waves by suppressing beam widening and sidelobe levels, enhancing performance in radar applications.
Implementation Method 1
a plurality of patch antennas configured to radiate electromagnetic waves passing through the first horn hole
Implementation Method 2
one of a part of a wall surface and the first horn hole is made up of conductors
Data Source
AI summary
The antenna device comprises a dielectric substrate, a first antenna array including a plurality of patch antennas configured to radiate electromagnetic waves, arranged in the longitudinal direction X, and connected in series on a surface of the dielectric substrate; and a horn member with at least one of a first horn hole and a second horn hole. The electromagnetic waves emitted from the plurality of patch antennas pass through the same hole. A part of the wall surface or the whole of the first horn hole and the second horn hole is made up of conductors. The width in a width direction Y perpendicular to the longitudinal direction X in which the plurality of patch antennas is arranged is greater than the longitudinal direction X.