Phased Array Antenna Beam Steering via Electronic Phase Shifters

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Solution Overview

Problem

There is a need for a cost-effective broadband wireless communication system that can operate in the high-frequency millimeter-wave range (57-64 GHz) with high bandwidth and comply with commercial requirements, while existing technologies like MIMO are not suitable due to mechanical and simulation considerations.

Innovation Solution

A phased array antenna system is used, comprising at least one phased array antenna frame and circuit, which allows for programmable phase shifts and radiation modes to achieve wide beam steering and improved antenna beam focus, enabling communication with multiple devices and data rates exceeding 1 Gbit/s.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If MIMO is used to implement broadband wireless communication, then data rate and bandwidth are improved, but device complexity and cost increase making it unsuitable for commercial requirements

Engineering Contradiction:
Improvedata rateVSAvoidsystem complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent segments the antenna system into multiple independent radiating elements arranged in a phased array configuration. Each element can be independently controlled with individual phase shifters, allowing the system to achieve MIMO-like performance through spatial diversity without requiring multiple complex transmitters and receivers. This segmentation enables high data rates through parallel transmission while keeping each component simple and cost-effective.

Inventive Principle:
Principle #1Segmentation

2Adaptability or versatility

If phased array antenna system is used to achieve high frequency communication with wide beam steering, then beam focus and adaptability are improved, but device complexity increases

Engineering Contradiction:
Improvebeam steering capabilityVSAvoidantenna system complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent replaces mechanical beam steering mechanisms with an electronic phased array system. Instead of physically moving antenna elements or entire antenna structures to change beam direction, the system uses electronic phase shifters to control the phase of signals at each radiating element. This electronic substitution achieves wide beam steering and precise beam focusing without mechanical complexity, making the system more reliable and suitable for commercial deployment.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Productivity

If broadband capabilities are implemented at millimeter-wave frequencies, then data rate is improved, but manufacturing precision and cost requirements become severe

Engineering Contradiction:
ImprovebandwidthVSAvoidfabrication precision
Core Design Contradiction:
ProductivityVSManufacturing precision

Solution Approach 1:

The patent employs integrated circuit phase shifters and simple radiating elements that can be manufactured using standard PCB fabrication techniques. The radiating elements are designed as simple planar structures that are easy to fabricate with conventional methods, avoiding the need for precision-machined metal components or complex assemblies. This approach enables broadband millimeter-wave communication while keeping manufacturing costs low and fabrication precision requirements within standard industrial capabilities.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

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 phased array antenna system provides efficient and cost-effective high-frequency communication, capable of transmitting and receiving data at high bandwidths, with the ability to switch between radiation modes and communicate through obstacles like walls, ensuring reliable wireless coverage.

Implementation Method 1

one of the groups of radiators is controlled by said phased array circuit to transmit or receive with a phase shift relative to said reference group

Methodology Applied
Scientific EffectPhase shift: Phase Modulation

Data Source

PatentUS7852265B2Wireless area network compliant system and method using a phase array antenna
Publication Date: 2010.12.14 BEAM NETWORKS
  • US7852265B2 patent drawing
  • US7852265B2 patent drawing
  • US7852265B2 patent drawing

AI summary

A wireless area network communication system comprising at least one phased array antenna frame, a phased array antenna circuit connected to the at least one phased array antenna frame wherein said phased array circuit and said at least one phased array antenna frame are adapted to transmit and receive wireless area network compliant signals from or to wireless area network devices.