THz Antenna Unit Cell With H-Field Coupling for Loss Tolerance
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Solution Overview
Problem
Current hardware for THz communication systems faces challenges in fulfilling power requirements and compensating for high losses, particularly due to the need for miniaturized components that incur significant material and manufacturing costs.
Innovation Solution
The development of electromagnetic (EM) structures that operate based on an H-field rather than direct E-field coupling, incorporating a unit cell design with a dual-port structure and interconnect phasing cells to achieve gain, bandwidth, efficiency, and beam-steering capabilities suitable for THz communication systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If miniaturized components are used to reduce size, then component dimensions are reduced, but material and manufacturing costs increase significantly
Solution Approach 1:
The antenna hardware is divided into modular unit cells, each functioning as an independent element. This segmentation allows standardized manufacturing of individual units that can be replicated and assembled, reducing overall manufacturing complexity and cost despite the need for multiple small components.
Solution Approach 2:
The unit cell design nests multiple functional elements (radiating patches, feeding networks, phase shifters) within a compact standardized structure. This nesting approach optimizes the use of materials and manufacturing processes by integrating multiple functions into a single manufacturable unit, reducing overall component count and assembly complexity.
2Device complexity
If conventional E-field coupled antenna structures are used, then design is simpler, but power requirements are not fulfilled and losses are not compensated
Solution Approach 1:
The patent inverts the conventional E-field coupling approach by implementing H-field coupling through magnetic resonance interactions between adjacent unit cells. This inversion allows energy to be transferred through magnetic fields rather than direct electric field coupling, reducing radiative losses and improving power efficiency while maintaining manageable structural complexity.
Solution Approach 2:
The design changes the operating parameters by tuning the resonant frequencies and coupling coefficients of the unit cells to optimize H-field interactions. By adjusting these parameters, the system achieves improved power efficiency and loss compensation while maintaining reasonable structural complexity for practical implementation.
3Loss of energy
If H-field based EM structures are implemented to tolerate high losses, then power requirements are met and losses are compensated, but device complexity increases
Solution Approach 1:
Each unit cell is designed as a universal module that performs multiple functions: radiation, phase shifting, amplitude control, and H-field coupling. This multi-functionality reduces the need for separate dedicated components for each function, thereby managing overall device complexity while achieving the required power efficiency and loss compensation performance.
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
These EM structures effectively tolerate high overall losses while maintaining performance, satisfying system requirements for beyond 5G and 6G networks by reducing leakage and cross-talk, and enhancing radiation efficiency.
Implementation Method 1
EM structures whose operations are based on an H-field rather than direct coupling with an E-field
Data Source
Figure 1
Figure 2~3a
Figure 3b
AI summary
An antenna and a base station including the antenna. The antenna includes a unit cell including a radiating element, a dielectric substrate, and a feed network. The radiating element includes first and second slots. The dielectric substrate includes a central cavity filled with a dielectric element. The feed network is proximate to the central cavity between the dielectric element and the radiating element and includes first and second horizontal feeds and first and second vertical feeds. The first and second horizontal feeds are separated by an air gap and a first vertical feed to feed a transmission to the first slot. The first and second vertical feeds are connected to the first and second horizontal feeds, respectively, and connected to feed first and second portions of the radiating element, respectively.