Metamaterial Split-Ring Resonators for Terahertz Beam Steering

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Current cellular networks face challenges in maintaining beam alignment and increasing capacity to handle high network traffic, especially at terahertz frequencies, due to the small size of antennas and limited antenna gain, which affects link budget and coverage.

Innovation Solution

The use of metamaterials with programmable split-ring resonators at both ends of the terahertz link for active beam steering and tracking, allowing dynamic manipulation of electromagnetic waves to enhance beam alignment and coverage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional antennas are used at terahertz frequencies, then the network capacity can be maintained, but the antenna gain is limited and beam alignment becomes difficult due to small antenna size

Engineering Contradiction:

Improvebeam alignmentVSAvoidantenna size

Core Design Contradiction:

ReliabilityVSLength of moving object

Solution Approach 1:

The antenna system is divided into multiple programmable antenna elements arranged in an array. Each element can be independently controlled to contribute to the overall beamforming pattern, enabling precise beam alignment despite individual element size constraints at terahertz frequencies

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The antenna array employs dynamic beamforming capabilities where the phase and amplitude of each element can be programmably adjusted in real-time. This allows the beam direction and shape to be dynamically controlled to maintain alignment with moving users or changing channel conditions

Inventive Principle:

Principle #15Dynamics

Solution Approach 3:

The programmable antenna array serves multiple functions including beam steering, beam focusing, interference suppression, and adaptive beamforming. This multi-functionality allows a single antenna system to address various challenges in terahertz communication without requiring separate specialized components

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If the number of antenna elements is increased to improve beamforming capability, then the device complexity and manufacturing difficulty increase

Engineering Contradiction:

Improvebeamforming capabilityVSAvoidantenna array complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The system changes the electrical parameters (phase and amplitude) of each antenna element rather than physically reconfiguring the antenna structure. This parameter-based control achieves complex beamforming patterns through software control, reducing mechanical complexity while maintaining beamforming capability

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent replaces mechanical beam steering mechanisms with electronic/phased array beamforming. Instead of physically moving antenna elements or adjusting mechanical reflectors, the system uses electronic phase shifters and amplitude controllers to achieve beam direction changes, significantly reducing mechanical complexity

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Productivity

If data usage limits are imposed to conserve network bandwidth, then network capacity is preserved, but customer satisfaction and revenue decrease

Engineering Contradiction:

Improvenetwork capacityVSAvoiddata usage flexibility

Core Design Contradiction:

ProductivityVSAdaptability or versatility

Solution Approach 1:

The system dynamically adjusts beamforming parameters and resource allocation based on real-time network conditions, user location, and traffic demands. This allows the network to adaptively manage capacity without imposing fixed data limits, providing flexible service levels that maintain customer satisfaction while optimizing network utilization

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent employs feedback mechanisms where the system continuously monitors network load, user quality of service requirements, and channel conditions. Based on this feedback, the beamforming and resource allocation are adjusted in real-time, enabling the network to respond to changing demands without predetermined usage limits

Inventive Principle:

Principle #23Feedback

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 enables high-throughput and extended transmission distances in nano-cells by actively steering and focusing terahertz electromagnetic beams, overcoming the limitations of conventional antenna size and directivity.

Implementation Method 1

a metamaterial having a plurality of addressable magnetic elements, where a resonant frequency of each of the plurality of addressable magnetic elements is capable of being programmably changed

Methodology Applied

Scientific EffectResonance: Resonance

Data Source

PatentUS10256539B2Method and apparatus for dynamically processing an electromagnetic beam

Publication Date: 2019.04.09 AT&T INTELLECTUAL PROPERTY I L P

AI summary

A method and apparatus for processing a terahertz frequency electromagnetic beam are disclosed. For example, the method receives the terahertz frequency electromagnetic beam via a metamaterial having a plurality of addressable magnetic elements, where a resonant frequency of each of the plurality of addressable magnetic elements is capable of being programmably changed via an adjustment, and activates selectively a subset of the plurality of addressable magnetic elements to manipulate the terahertz frequency electromagnetic beam.