Multilayer Antenna Board 57-66 GHz Waveguide Patch Design
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Solution Overview
Problem
Existing antenna boards have limited frequency bands, making them unsuitable for use in different countries, particularly lacking coverage in the 57-66 GHz range required for global wireless personal area networks.
Innovation Solution
A multilayer antenna board design incorporating dielectric and conductor layers, patch conductors, through conductors, and a waveguide configuration that enhances directional signal transmission and reception across a wide frequency band by utilizing electrostatic capacity coupling and composite resonance between patch conductors and auxiliary patch conductors, with a waveguide structure that supports electromagnetic wave propagation in multiple directions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional antenna designs are used, then the antenna can operate at specific frequency bands, but the frequency band coverage is limited and cannot achieve wide-band operation from 57-66 GHz
Solution Approach 1:
The antenna is divided into multiple patch conductors (first patch conductor, second patch conductor, third patch conductor) with different sizes and positions, each resonating at different frequency ranges. This segmentation allows the antenna to cover the wide frequency band from 57-66 GHz while maintaining reliable signal transmission in each sub-band through controlled resonance.
Solution Approach 2:
The patent introduces vertical stacking of multiple patch conductors at different heights above the ground conductor layer, utilizing the third dimension (height) to create multiple resonance modes. This dimensional approach enables wide-band operation by activating different resonant frequencies through vertical positioning variations.
2Adaptability or versatility
If multiple patch conductors are added to widen frequency band, then frequency coverage improves, but device complexity increases
Solution Approach 1:
Multiple patch conductors are merged into a single integrated antenna structure sharing common ground conductor layer and dielectric substrate. This merging approach achieves wide frequency coverage through multiple patches while avoiding the complexity of separate antenna systems, as all patches operate within one unified structural framework.
Solution Approach 2:
The antenna structure is designed to perform multiple functions simultaneously: different patch conductors handle different frequency ranges, the waveguide provides both shielding and signal transmission paths, and the dielectric layers serve both mechanical support and electromagnetic resonance functions. This multi-functionality reduces overall system complexity.
3Area of stationary object
If patch conductors are closely positioned to achieve compact design, then space efficiency improves, but directional signal transmission capability deteriorates
Solution Approach 1:
The patent compensates for reduced horizontal spacing by utilizing vertical dimension - patch conductors are positioned at different heights above the ground layer. This vertical separation maintains directional signal transmission capability despite compact horizontal footprint, as the height differences create distinct radiation patterns and beam directions.
Solution Approach 2:
Different regions of the antenna structure are assigned different functions: edge patches provide broad coverage, central patches provide directional gain, and waveguide regions provide focused signal transmission. This local quality differentiation maintains directional transmission capability while allowing compact overall positioning.
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 achieves a wide-band antenna board capable of rich directional signal transmission and reception in the 57-66 GHz frequency range, ensuring global compatibility and efficient signal propagation.
Implementation Method 1
The through conductor extends through the second dielectric layer and connects the terminal portion and the first patch conductor
Implementation Method 2
The waveguide includes upper and lower ground conductors and a ground through conductor, and is disposed in a region closer to the extending direction of the strip conductor than the first and second patch conductors
Implementation Method 3
The second dielectric layer is laminated on the upper surface of the first dielectric layer and an upper surface of the strip conductor
Data Source
AI summary
An antenna board includes a first dielectric layer, a strip conductor, a ground conductor layer, a second dielectric layer, a first patch conductor, a third dielectric layer, a second patch conductor, a through conductor, and a waveguide including upper and lower ground conductors and a ground through conductor. The upper and lower ground conductors are disposed so as to hold therebetween at least one of the first, second, and third dielectric layers. The ground through conductor is disposed in such a manner that at least one lies on each of both sides in a direction orthogonal to an extending direction of the strip conductor, and extends through the dielectric layers lying between the upper and lower ground conductors.