Misaligned Antenna Units for Wireless Access Isolation
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Solution Overview
Problem
Existing wireless access devices face challenges in achieving effective isolation between co-frequency antennas, limiting the distance between them and increasing production costs, while maintaining signal quality and coverage.
Innovation Solution
The solution involves misaligning adjacent antenna units along a perpendicular axis, using insulators to reduce equivalent wavelength, and cross-connecting radio frequency interfaces to improve isolation and allow for closer antenna placement, enabling multiple co-frequency antennas to be arranged side by side on a small device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the distance between adjacent co-frequency antennas is reduced to decrease device size, then the device footprint is reduced, but the isolation between antennas deteriorates (increases interference)
Solution Approach 1:
The patent transitions from planar antenna arrangement to three-dimensional spatial arrangement. Antenna units are positioned at different heights (vertical separation) and rotated at different angles (azimuth separation), creating isolation through dimensional separation rather than relying solely on horizontal distance. This allows compact footprint while maintaining isolation through spatial diversity.
Solution Approach 2:
Adjacent antenna units are rotated at different angles relative to the device body (e.g., 0 degrees, 45 degrees, 90 degrees, 135 degrees). This asymmetric angular arrangement creates different radiation patterns and spatial orientations, reducing mutual interference between antennas while allowing closer spacing.
2Productivity
If multiple co-frequency antennas are arranged side by side on a small device, then device integration is improved, but isolation between antennas deteriorates
Solution Approach 1:
The patent employs vertical stacking of antenna units at different heights combined with angular rotation. This three-dimensional arrangement allows multiple antennas to be integrated in a compact space while maintaining isolation through spatial separation in both vertical and angular dimensions, rather than requiring large horizontal spacing.
Solution Approach 2:
The antenna units are designed with rotatable joints, allowing dynamic adjustment of their angular positions. This enables the system to optimize antenna orientation for different operating conditions and frequencies, maintaining isolation while maximizing integration. The rotatable mechanism allows adaptive configuration rather than fixed rigid positioning.
3Length of stationary object
If antenna units are positioned closer together, then device size is reduced, but isolation between antenna units deteriorates
Solution Approach 1:
Adjacent antenna units are rotated at asymmetric angles (e.g., 0°, 45°, 90°, 135°) relative to the device body. This angular asymmetry creates different spatial orientations for each antenna, reducing electromagnetic coupling even when physically close. The asymmetric arrangement ensures that antenna elements are not parallel and co-aligned, minimizing interference.
Solution Approach 2:
The patent introduces vertical dimension for antenna placement, with antenna units positioned at different heights above the device body. This vertical separation, combined with angular rotation, creates three-dimensional spatial isolation that reduces coupling effects while allowing reduced horizontal spacing between antenna mounting points.
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
This approach enhances signal isolation, reduces production costs, and improves coverage and signal quality by allowing adjacent antennas to be placed closer together while maintaining effective signal transmission.
Implementation Method 1
a first antenna unit 11a and a second antenna unit 11b, which are connected to a radio frequency circuit respectively
Implementation Method 2
disposing the antenna elements of adjacent antenna units in misaligned regions of the antenna units, it may improve isolation between adjacent antenna units
Data Source
Figure 1~2
Figure 3
Figure 4~5
AI summary
The present invention provides a device for wireless access, which pertains to the technical field of wireless network. The device for wireless access includes a device body; a plurality of antenna units disposed on an external surface of the device body side by side; and a radio frequency circuit disposed inside the device body, each of the antenna units being connected to the radio frequency circuit, wherein each of the antenna units is provided with an antenna oscillator, any two adjacent antenna oscillators provided on respective antenna units are misaligned with each other. By disposing the antenna oscillators of adjacent antenna units in misaligned regions of the antenna units, it may improve isolation between adjacent antenna units, allow the adjacent antenna units of the device for wireless access to be disposed at reduced distance. Therefore, it is possible to implement a plurality of co-frequency antennas side by side arranged on a small-sized device for wireless access, and to reduce the production cost.