Antenna Module With Parasitic Structure For Multi-Band Support
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Solution Overview
Problem
Existing antenna modules in small devices face challenges in achieving multiple communication standards due to space constraints and interference between antennas, making it difficult to maintain high transmission quality.
Innovation Solution
An antenna module design incorporating a substrate with a main radiation structure, a strip-shaped radiation structure, a U-shaped shorting structure, a parasitic radiation structure, and a metal radiation member, which allows for electromagnetic coupling and matching of multiple bandwidths including LTE700/GSM850/GSM900, GPS/GLONASS, and GSM1800/GSM1900/UMTS/LTE2300/LTE2500 by controlling the shorting structure and adjusting the distance and angle of the parasitic radiation structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple independent antennas are used to support various communication standards, then communication versatility is improved, but device space occupation increases and antenna isolation becomes difficult to maintain
Solution Approach 1:
The patent combines multiple antenna functions into a single integrated antenna structure. The antenna module includes a feeding structure with multiple feeding ports that can simultaneously support multiple communication standards (GSM, UMTS, LTE, etc.), eliminating the need for multiple separate antennas while maintaining communication versatility.
Solution Approach 2:
The antenna module is designed as a universal multi-functional structure that can operate across multiple frequency bands and communication standards. The radiation elements and feeding network are configured to provide broad bandwidth coverage, allowing a single antenna to perform the functions of multiple specialized antennas.
2Area of stationary object
If multiple antennas are disposed on the same substrate to save space, then device compactness is improved, but antenna interference increases and transmission quality deteriorates
Solution Approach 1:
The antenna module segments the radiation function into multiple independent radiation elements (first radiation element, second radiation element, third radiation element) that are spatially separated on the substrate. This segmentation allows each element to operate with reduced interference while maintaining compact overall structure.
Solution Approach 2:
The patent uses a grounding structure and feeding network as intermediary elements to manage and isolate the electromagnetic fields of different radiation elements. The grounding structure provides electromagnetic shielding and isolation between elements, reducing mutual interference while allowing compact arrangement.
3Object-affected harmful factors
If antenna isolation is increased to prevent interference, then transmission quality is improved, but device size increases
Solution Approach 1:
The patent transitions from planar two-dimensional antenna arrangement to three-dimensional spatial configuration. The radiation elements are positioned at different heights and angles relative to the substrate, utilizing the vertical dimension to achieve isolation without increasing the horizontal footprint. The first radiation element extends in a first direction, the second in a second direction, and the third in a third direction, creating spatial separation.
Solution Approach 2:
The antenna module employs a nested structure where multiple radiation elements are arranged in a compact configuration with overlapping projections. The elements are positioned such that their projections on the substrate overlap or are closely spaced, while maintaining vertical or angular separation to achieve isolation within a compact footprint.
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 design enables the antenna module to generate three operation bandwidths, maintaining high radiation efficiency and reducing interference, thus enhancing transmission quality in small devices.
Implementation Method 1
the antenna module of the invention can induce electromagnetic coupling between the parasitic radiation structure and the main radiation structure so as to match and modulate high bandwidth
Data Source
AI summary
An antenna module includes a substrate, a main radiation structure, a strip-shaped radiation structure, a grounding structure, a shorting structure, a parasitic radiation structure and a metal radiation member. An acute angle is included between a first edge of the main radiation structure and a longitudinal edge of the substrate. The main radiation structure has a signal feeding portion and a connecting portion. The strip-shaped radiation structure is extended from a second edge of the main radiation structure. The shorting structure is U-shaped. A first end of the shorting structure is connected to the signal feeding portion and a second end of the shorting structure is connected to the grounding structure. The parasitic radiation structure is extended from the grounding structure and parallel to the first edge. A constant distance is between the parasitic radiation structure and the first edge. The metal radiation member is connected to the connecting portion.