Chip Antenna Module With Asymmetric Ground Regions
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Solution Overview
Problem
The development of compact antenna modules for millimeter wave communications in 5G systems is challenging due to the small wavelength, making it difficult to design antennas that can be mounted on mobile devices while maintaining efficient radio wave propagation and transmission distance.
Innovation Solution
A chip antenna module with a board configuration featuring paired chip antennas, each configured for horizontal and vertical polarization, with specific mounting heights and spacing distances between radiation and ground portions, optimized for high-frequency bands using dielectric materials with controlled dielectric constants to enhance radiation efficiency and reduce size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If conventional antennas are used for millimeter wave communications, then antenna performance can be maintained, but antenna size becomes too large to be mounted on mobile devices
Solution Approach 1:
The patent transitions from planar antenna structures to three-dimensional stacked configurations. Multiple antenna elements are arranged in vertical layers with different orientations (horizontal and vertical polarizations), enabling compact size while maintaining radiation performance through spatial diversity in the third dimension
Solution Approach 2:
The antenna module employs a nested structure where multiple antenna elements are integrated within a compact stacked arrangement. The ground portions and radiation portions are interlayered vertically, with feed pads and connection structures nested between antenna elements, achieving miniaturization while preserving functional performance
2Volume of moving object
If antenna elements are placed closer together to reduce size, then device compactness improves, but mutual interference between antennas increases
Solution Approach 1:
The patent implements asymmetric ground region configurations for different antenna elements. The first antenna has a ground region with specific spacing relationships, while the second antenna has a differently shaped and positioned ground region. This local optimization of ground structures minimizes mutual coupling and interference between closely spaced antenna elements
Solution Approach 2:
The antenna module employs asymmetric arrangements where the first and second antennas have different orientations (horizontal vs. vertical polarization), different ground region configurations, and different spacing relationships. This asymmetry reduces mutual interference by ensuring orthogonal or non-aligned radiation patterns
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 enables efficient radio communication in high-frequency bands by optimizing antenna size and radiation patterns, improving gain and reducing propagation losses, thus facilitating the integration of 5G technology in compact mobile devices.
Implementation Method 1
chip antennas mounted on the first surface, each of the chip antennas including a first antenna and a second antenna... configured for radio communications in a frequency band of gigahertz, may be configured to receive a feed signal of a signal processing device, and may be configured to radiate the feed signal externally
Implementation Method 2
optimized for high-frequency bands using dielectric materials with controlled dielectric constants to enhance radiation efficiency and reduce size
Implementation Method 3
each of the chip antennas including a first antenna and a second antenna. The first antenna and the second antenna each include a ground portion bonded to the ground region, and a radiation portion bonded to the feed region
Data Source
AI summary
An antenna module includes: a board having a first surface including a ground region and a feed region; and chip antennas mounted on the first surface, each of the chip antennas including a first antenna and a second antenna. The first antenna and the second antenna each include a ground portion bonded to the ground region, and a radiation portion bonded to the feed region. A length of a radiating surface of the first antenna is greater than a mounting height of the first antenna, and a mounting height of the second antenna is greater than a length of a radiating surface of the second antenna. A horizontal spacing distance between the radiation portion of the first antenna and the ground region is greater than a horizontal spacing distance between the radiation portion of the second antenna and the ground region.