Perpendicular Feed Patch Antenna Interference Reduction
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Solution Overview
Problem
In antenna modules with multiple omni-directional antennas, interference between antennas leads to decreased communication quality, necessitating a new antenna design that minimizes interference and enhances performance.
Innovation Solution
A patch antenna design featuring a supporting element with a grounding portion and a radiating portion, including specific feeding and grounding points arranged symmetrically to form perpendicular lines, allowing for a two-feed two-polarization configuration that reduces interference and increases directional performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple omni-directional antennas are arranged in a ring configuration, then the antenna module can provide comprehensive signal coverage, but the antennas interfere with each other and communication quality decreases
Solution Approach 1:
The patent transitions from omni-directional antennas to directional patch antennas with specific radiation patterns. The patch antenna structure with its feed point and ground point configuration creates asymmetric radiation characteristics that direct energy in specific directions, reducing omnidirectional interference while maintaining coverage through strategic placement and polarization orientation
Solution Approach 2:
The patent introduces polarization as an additional dimension for signal differentiation. By utilizing orthogonal polarizations (horizontal and vertical) for different antenna elements, the system can separate signals in the polarization domain, reducing interference between adjacent antennas while maintaining comprehensive coverage
2Area of stationary object
If omni-directional antennas are used, then signal coverage is maximized in all directions, but interference between adjacent antennas increases
Solution Approach 1:
The patent applies local quality by creating antennas with directionally focused radiation patterns rather than uniform omnidirectional patterns. The patch antenna structure concentrates radiation energy in specific directions determined by its geometry and feed configuration, providing strong coverage in needed directions while minimizing radiation and interference in other directions
Solution Approach 2:
The patent segments the omnidirectional radiation pattern into multiple directional beams using multiple patch antennas with different orientations and polarizations. Each antenna segment handles a specific spatial sector, reducing the interference that would occur if all antennas radiated uniformly in all directions
Data Source
AI summary
A patch antenna includes a grounding portion and a radiating portion. The radiating portion includes a first feeding point, a first grounding point, a second feeding point, and a second grounding point. The first feeding point is electrically connected to a first signal source. The first grounding point is electrically connected to the grounding portion. The second feeding point is electrically connected to a second signal source. The second grounding point electrically connected to the grounding portion. The line formed by connecting the first feeding point and the first grounding point is substantially perpendicular to the line formed by connecting the second feeding point and the second grounding point.