Broadband LTE Antenna Module With Coupling Short Pin
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Solution Overview
Problem
Conventional LTE antenna modules struggle to handle increased data usage due to limited bandwidth in low frequency bands, leading to issues like call drops and internet connection failures.
Innovation Solution
A broadband antenna module for LTE is designed with a coupling short pin and radiation patch antenna configuration on a printed circuit board, where the radiation pattern is connected to both a feeding pin and a direct short pin for high frequency bands and a coupling short pin for low frequency bands, enhancing the coupling effect and bandwidth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a conventional antenna module is used for LTE, then the high frequency band (1710-2170 MHz) can be supported, but the low frequency band (704-894 MHz) bandwidth is insufficient
Solution Approach 1:
The radiation pattern is divided into multiple separate patterns (first radiation pattern for high frequency band, second radiation pattern for low frequency band) that can independently resonate at different frequency ranges. This segmentation allows each pattern to be optimized for its specific frequency band, enabling the antenna module to support both low and high frequency bands with adequate bandwidth in each band.
2Quantity of substance
If the bandwidth of low frequency band is increased, then data transmission capability improves, but the antenna structure becomes more complex
Solution Approach 1:
Multiple radiation patterns (first radiation pattern connected to feeding pin and direct short pin, second radiation pattern connected to feeding pin and coupling short pin) are integrated into a single antenna module structure. This merging allows the module to achieve broadband performance across both low and high frequency bands while maintaining a unified, compact design rather than requiring separate antenna structures for each band.
3Quantity of substance
If a coupling short pin is added to form a second radiation pattern, then low frequency band bandwidth increases by 30%, but manufacturing complexity increases
Solution Approach 1:
The coupling short pin is designed to automatically form the second radiation pattern through its coupling connection between the radiation pattern and ground plane, without requiring additional complex manufacturing steps. The structure utilizes the existing PCB layers and ground plane, allowing the low frequency band radiation pattern to be formed through the natural coupling effect rather than requiring separate fabrication processes.
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 increases the bandwidth and efficiency of the low frequency band by approximately 30% and high frequency band by 22%, improving signal reception and transmission efficiency across LTE bands.
Implementation Method 1
a second radiation pattern directly connected to the feeding pin formed on one surface of the printed circuit board and coupled to the coupling short pin formed on the other surface of the printed circuit board to resonate in a second frequency band which is a low frequency band of the LTE frequency band
Implementation Method 2
the radiation pattern directly connected to the feeding pin and the direct short pin to resonate in a first frequency band which is a high frequency band of an LTE frequency band
Data Source
AI summary
The disclosed broadband antenna module for LTE includes: a feeding pin and a direct short pin that are spaced apart from each other on one surface of a printed circuit board; a coupling short pin formed of a conductive material on the other surface of the printed circuit board and connected to a ground plane; and a radiation patch antenna including a dielectric and a radiation pattern formed on an outer circumference of the dielectric and mounted on one surface of the printed circuit board, in which the radiation pattern of the radiation patch antenna is directly connected to the feeding pin and direct short pin and coupled to the coupling short pin in an overlapping manner.