Multi-Band Antenna Patch Layout for Beam Interference Reduction
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Solution Overview
Problem
Conventional multi-band antenna devices experience interference and distorted radiation patterns due to the overlapping beam patterns of antenna patch panels, leading to increased product size and deteriorated directivity.
Innovation Solution
The antenna device incorporates a frequency selective transmission pattern part with wave-transmissible shape parts on the first antenna patch panel to minimize interference by allowing the transmission of middle and high-frequency beams while maintaining optimal beamforming characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If antenna patch elements are arranged close together to reduce product size, then the overall device size is reduced, but beam pattern interference and distorted radiation patterns occur
Solution Approach 1:
The first antenna patch panel is segmented into multiple regions: a non-overlapping region for LB elements and overlapping regions for HB elements. This spatial segmentation allows different frequency bands to coexist without interference by assigning specific zones to different antenna types.
Solution Approach 2:
Different regions of the first antenna patch panel are assigned different functions: the non-overlapping region is optimized for LB antenna radiation, while the overlapping regions are optimized for HB antenna beam transmission. This local differentiation allows each region to serve its specific frequency band without causing interference to other bands.
2Object-affected harmful factors
If antenna patch elements are arranged far apart to avoid beam pattern interference, then radiation patterns are formed directly without mutual interference, but the overall product size increases
Solution Approach 1:
The HB antenna elements are nested within the spatial footprint of the LB antenna panel by placing them in overlapping regions. The HB elements are positioned such that their radiation beams pass through the LB panel structure, allowing compact integration without requiring separate spatial zones for each antenna type.
3Illumination intensity
If LB elements with large radiating surface area are arranged in front of HB elements, then LB radiation is optimized, but HB beam patterns are blocked and distorted
Solution Approach 1:
The frequency selective transmission pattern part acts as an intermediary structure that allows HB beams to pass through the LB panel region without distortion. This conductive pattern selectively transmits HB frequencies while maintaining LB radiation performance, mediating between the conflicting requirements of LB radiation efficiency and HB beam integrity.
4Volume of moving object
If HB elements with small radiating surface area are arranged close to the reflector, then device compactness is improved, but their beams are blocked by front-arranged LB elements
Solution Approach 1:
The first antenna patch panel is divided into non-overlapping and overlapping regions with distinct functions. The overlapping regions are specifically designed to be transparent to HB beams while maintaining LB radiation capabilities, allowing HB elements near the reflector to operate without blocking.
Solution Approach 2:
The frequency selective transmission pattern part serves as an intermediary that mediates between LB radiation and HB beam transmission. It allows HB beams to pass through the panel structure in overlapping regions while preserving LB radiation in non-overlapping regions, resolving the blocking issue without requiring element separation.
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 design reduces overall product size, minimizes beam interference, and enhances signal quality by allowing efficient transmission of multiple frequency bands without distortion.
Implementation Method 1
a frequency selective transmission pattern part for transmitting a beam of an operating frequency radiated from the second antenna patch panel
Implementation Method 2
transmitting a beam of an operating frequency radiated from the second antenna patch panel (hereinafter referred to as a 'middle beam')
Data Source
AI summary
The present disclosure relates to an antenna device, comprising a first antenna patch panel configured to radiate an operating frequency of a first frequency band; and at least one second antenna patch panel configured to radiate an operating frequency greater than the first frequency band; wherein the first antenna patch panel is provided with a frequency selective transmission pattern part for transmitting a beam of an operating frequency radiated from the second antenna patch panel (hereinafter referred to as a ‘middle beam’); and wherein the frequency selective transmission pattern part is provided in a conductive pattern form on a portion of the first antenna patch panel that entirely or at least partially overlaps the radiation direction of the middle beam of the second antenna patch panel, thereby providing advantages such as preventing product size expansion and improving signal quality.