Aperture-Coupled Radiating Plate Structure for Wider 5G Antenna Bandwidth

Solution Overview

Problem

Existing millimeter wave antennas for 5G communication face challenges in achieving optimal bandwidth and gain, particularly in designs that do not incorporate innovative structural features such as radiating blocks and specific included angles for slits and sides.

Innovation Solution

The proposed antenna design includes a microstrip feed line, a ground plate with a slot, and a radiating plate configured for aperture coupling. The radiating plate is divided into a plurality of radiating blocks spaced apart by slits, with specific included angles between the slot's direction and the slits' directions, enhancing bandwidth and gain.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a conventional millimeter wave antenna design is used, then the structure is simple, but the bandwidth and gain are insufficient

Engineering Contradiction:

Improvebandwidth and gainVSAvoidantenna structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The radiating plate is divided into multiple radiating blocks separated by slits, creating a segmented structure that enhances bandwidth and gain performance while maintaining a manageable structural complexity

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Specific included angles (40-50 degrees for first slits, 130-140 degrees for second slits) are introduced at critical locations to optimize electromagnetic field distribution, achieving superior bandwidth and gain without uniformly complicating the entire structure

Inventive Principle:

Principle #3Local quality

2Reliability

If the radiating plate is divided into multiple radiating blocks, then the bandwidth increases, but the manufacturing complexity increases

Engineering Contradiction:

ImprovebandwidthVSAvoidmanufacturing process

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The radiating plate is segmented into multiple blocks by slits, which can be manufactured using standard PCB fabrication processes, making the design practical for mass production despite the increased structural complexity

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The included angles of the slits are optimized to specific ranges (40-50 degrees and 130-140 degrees) to achieve maximum bandwidth performance while maintaining manufacturability through standardized fabrication tolerances

Inventive Principle:

Principle #35Parameter changes

3Reliability

If specific included angles are introduced for slits and sides, then the gain increases, but the design complexity increases

Engineering Contradiction:

ImprovegainVSAvoiddesign parameters

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

Specific included angles (40-50 degrees for first slits, 130-140 degrees for second slits) are introduced at critical locations to optimize electromagnetic field distribution, achieving superior bandwidth and gain without uniformly complicating the entire structure

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The included angles of the slits are optimized to specific ranges (40-50 degrees and 130-140 degrees) to achieve maximum bandwidth performance while maintaining manufacturability through standardized fabrication tolerances

Inventive Principle:

Principle #35Parameter changes

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 significantly increases the antenna's bandwidth and gain, achieving a relative impedance bandwidth of up to 34% and a gain of 9.97 dBi at the central frequency, while maintaining a compact and efficient structure.

Implementation Method 1

the radiating plate is configured to receive a signal from the microstrip feed line by aperture coupling through the slot

Methodology Applied

Scientific EffectAperture coupling:

Data Source

PatentUS12244067B2Antenna and electronic apparatus

Publication Date: 2025.03.04 BEIJING BOE TECH DEV CO LTD

AI summary

An antenna is provided. The antenna includes a microstrip feed line, a ground plate, a slot extending through the ground plate, and a radiating plate. The radiating plate is on a side of the ground plate and the slot away from the microstrip feed line. The radiating plate is configured to receive a signal from the microstrip feed line by aperture coupling through the slot. The radiating plate includes a plurality of radiating blocks spaced apart from each other.