Planar Array Antenna Layout for Beam Forming and Interference Suppression
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Solution Overview
Problem
In wireless communication systems, the increasing demand for high-frequency data transmission requires antennas with high directivity and wide radiation patterns to manage the smaller cell sizes caused by higher frequency carrier waves, necessitating a higher density of base stations and efficient antenna designs to select the best communication path.
Innovation Solution
A planar antenna design featuring a planar radiation conductor, strip conductors, passive conductors at specific angles, and an antenna ground conductor, integrated with a dielectric, which forms a planar array antenna capable of high directivity and beam forming, suppressing interference between adjacent antennas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If base stations are arranged at higher density to support high-frequency wireless communication, then communication capacity increases, but interference between adjacent base stations increases
Solution Approach 1:
The antenna system is divided into multiple planar antenna elements arranged in an array configuration. Each element operates independently but contributes to the overall beam forming capability, allowing the system to achieve high directivity through coherent combination of signals from segmented elements
Solution Approach 2:
The passive conductors are positioned at specific locations and orientations (45 degrees relative to the radiation conductor) to locally control the electromagnetic field distribution. This local structural optimization enables precise beam steering and interference suppression in specific directions while maintaining high communication capacity
2Area of stationary object
If an antenna with wide radiation range is used to cover multiple base stations, then coverage area increases, but directivity decreases
Solution Approach 1:
The antenna system employs beam forming capability that allows dynamic adjustment of the radiation pattern. By controlling the phase and amplitude of signals from individual planar antenna elements, the system can dynamically steer beams toward different base stations, achieving both wide coverage and high directivity as needed
Solution Approach 2:
The planar array antenna structure serves multiple functions: it provides wide coverage through array configuration while simultaneously achieving high directivity through beam forming. The same antenna system can adaptively serve multiple base stations with different directional requirements, making it a universal solution for both coverage and directivity needs
3Measurement precision
If passive conductors are added to enhance beam forming capability, then directivity improves, but device complexity increases
Solution Approach 1:
The passive conductors are positioned at specific angles (45 degrees) relative to the radiation conductor, and their dimensions are optimized to specific values. By carefully controlling these geometric parameters, the system achieves enhanced beam forming capability and high directivity without requiring complex active control mechanisms or additional electronic components
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 design enables efficient transmission and reception of electromagnetic waves with high directivity in short wavelength bands, improving communication quality and coverage by reducing interference and enhancing beam forming capabilities.
Implementation Method 1
capable of transmission and reception of electromagnetic waves having high directivity in a band of short wavelengths
Implementation Method 2
planar radiation conductor, passive conductors each including a side at an angle of 45±3° or −45±3° with respect to the first axis and opposed to the planar radiation conductor
Implementation Method 3
a dielectric including a main surface perpendicular to the direction of the third axis, and the planar radiation conductor, the common ground conductor, the first strip conductor, the second strip conductor, and the passive conductors may be located in the dielectric
Data Source
AI summary
A planar antenna includes a planar radiation conductor 11, a common ground conductor 32, a first strip conductor 21 located between the planar radiation conductor 11 and the common ground conductor 32 and extending in a direction in parallel to a first axis in a first right rectangular coordinate system including first, second, and third axes, a second strip conductor 22 located between the planar radiation conductor and the common ground conductor and extending in a direction orthogonal to a direction of extension of the first strip conductor, and at least one pair of passive conductors 12 to 15 each including a side at an angle of 45±3° or −45±3° with respect to the first axis and opposed to the planar radiation conductor.