Chip Antenna Module With Auxiliary Patch for Millimeter Wave
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Solution Overview
Problem
The development of a chip antenna module for millimeter wave communications is challenging due to the small wavelength, requiring a compact design that maintains performance while being suitable for high-frequency bands like 20 GHz to 60 GHz, and must be compatible with thin portable devices.
Innovation Solution
A chip antenna module is designed with a substrate having layers, featuring a chip antenna with a body portion and ground portion formed of dielectric substances, and an auxiliary patch or via for improved radiation efficiency, allowing for adjustable resonance frequency and reduced size to fit within thin devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a conventional antenna is used for millimeter wave communications, then the antenna structure is simple and easy to manufacture, but the wavelength is too large and the antenna size cannot be reduced to fit thin portable devices
Solution Approach 1:
The patent transitions from planar antenna structures to three-dimensional stacked configurations. Multiple antenna elements are arranged in vertical layers above the substrate, utilizing the third dimension (height) to achieve compactness while maintaining electrical performance. This dimensional transition allows the antenna to fit within thin device profiles while supporting millimeter wave frequencies.
Solution Approach 2:
The patent implements nested arrangements where smaller antenna elements are positioned within or around larger structural components. The auxiliary patches are strategically placed around the main radiating elements, and multiple antenna layers are stacked with varying sizes and positions, creating a nested configuration that maximizes space utilization and reduces overall antenna volume.
2Volume of moving object
If the antenna size is reduced for thin portable devices, then the device thickness is reduced, but the radiation efficiency and gain deteriorate
Solution Approach 1:
The patent combines multiple antenna elements into a single integrated structure. Multiple radiating patches and auxiliary elements are merged into a unified antenna assembly that operates cooperatively. This merging allows the compact structure to achieve sufficient radiation efficiency through constructive interference and enhanced current distribution across the combined elements.
Solution Approach 2:
The patent employs composite structural configurations combining different types of antenna elements (radiating patches, auxiliary patches, ground structures) with varying geometries and electrical characteristics. This composite approach enables the compact antenna to maintain balanced radiation patterns and acceptable gain by leveraging the complementary strengths of different element types.
3Loss of energy
If auxiliary patches are added to improve radiation efficiency, then the radiation performance is enhanced, but the device complexity increases
Solution Approach 1:
The auxiliary patches serve multiple functions simultaneously: they enhance radiation efficiency, modify the impedance matching, and contribute to the overall resonant characteristics of the antenna. This multi-functionality allows a single structural addition to address multiple performance requirements without proportionally increasing complexity.
Solution Approach 2:
The auxiliary patches are strategically positioned at specific locations around the main radiating elements where they provide the most beneficial effect. Rather than uniformly distributing complex structures throughout the antenna, the design applies simplified auxiliary elements only where needed to enhance local current distribution and radiation patterns, optimizing the complexity-performance ratio.
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 enhances radiation efficiency and gain, reduces reflection loss, and maintains performance across the 20 GHz to 60 GHz frequency band, while being compact enough for integration in thin portable devices.
Implementation Method 1
a chip antenna mounted on one surface of the substrate to radiate a radio signal
Implementation Method 2
a chip antenna having a body portion formed of a dielectric substance
Data Source
AI summary
A chip antenna module includes a substrate having layers; a chip antenna mounted on one surface of the substrate to radiate a radio signal, the chip antenna having a body portion formed of a dielectric substance, and a ground portion and a radiating portion disposed on opposite surfaces of the body portion; and an auxiliary patch disposed below the radiating portion on at least one layer of the substrate.