Millimeter Wave Antenna With Parasitic Elements
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Solution Overview
Problem
Current antenna technologies, including antenna arrays, face challenges in enhancing communication efficiency, particularly in supporting high-frequency signals and achieving omnidirectional radio communications for 5G applications.
Innovation Solution
A millimeter wave antenna device comprising an antenna array with strategically positioned parasitic elements and tunable components that adjust impedance, allowing for improved signal processing and control, is designed. This device includes multiple parasitic elements and tunable components that are integrated with a transceiver to enhance antenna performance without overlapping with the antenna area, enabling better signal transmission and reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an antenna array is used to improve communication efficiency and support high-frequency signals, then the antenna gain and signal transmission capability are improved, but the device complexity and structural constraints increase
Solution Approach 1:
The antenna system is segmented into a regular antenna array and additional parasitic elements positioned at specific locations around the antenna area. The parasitic elements are electrically connected to specific antenna elements through tuning components, creating a segmented structure that improves radiation pattern control while maintaining modular design benefits
Solution Approach 2:
The patent introduces parasitic elements positioned in the spatial dimension around the antenna area (beside first and second sides of the antenna area), adding a new dimensional layer to the traditional planar antenna array. This spatial extension improves omnidirectional radiation capability without significantly increasing the footprint area of the main antenna array
2Reliability
If parasitic elements are added to improve antenna pattern and gain, then the radiation performance is improved, but the device complexity and impedance control difficulty increase
Solution Approach 1:
The patent employs tunable components (such as variable capacitors or inductors) that allow dynamic adjustment of the electrical connection between parasitic elements and antenna elements. This dynamic impedance control enables optimization of the antenna pattern and gain under different operating conditions, frequencies, and signal environments, transforming a static antenna system into an adaptive one
Solution Approach 2:
The patent changes the electrical parameters (impedance, capacitance, inductance) of the parasitic element connections to optimize performance. By adjusting these parameters, the system can control the coupling between parasitic elements and the antenna array, thereby optimizing radiation patterns and gain without requiring complex physical reconfiguration
3Adaptability or versatility
If multiple parasitic elements are positioned around the antenna area to enhance omnidirectional communication, then the radiation coverage is improved, but the manufacturing precision and assembly difficulty increase
Solution Approach 1:
The parasitic elements are designed with multi-functionality: they can be electrically connected or disconnected from different antenna elements based on operational requirements. This universal design allows the same parasitic element structure to serve multiple radiation pattern optimization goals, reducing the need for highly precise custom positioning for each specific application scenario
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 solution significantly improves antenna gain and flexibility in design and application, supporting high-frequency signals and enhancing communication efficiency for 5G communications by optimizing signal processing and impedance adjustment.
Implementation Method 1
a first tunable component configured to adjust an impedance corresponding to the first parasitic element and comprising a first terminal coupled to the first parasitic element and a second terminal; a second tunable component configured to adjust an impedance corresponding to the second parasitic element
Implementation Method 2
an antenna array comprising m×n antennas and disposed in an antenna area; a transceiver coupled to the antenna array, the second terminal of the first tunable component and the second terminal of the second tunable component, and configured to process signals transceived by the antenna array
Data Source
AI summary
A millimeter wave antenna device includes an antenna array, a first parasitic element and a second parasitic element. The antenna array includes m×n antennas and is disposed in an antenna area. The first parasitic element is disposed beside a first side of the antenna area. The second parasitic element is disposed beside a second side of the antenna area. None of the first parasitic element and the second parasitic element overlaps with the antenna area.