Slot Segmented Antenna Module for Multi-Band Wireless Devices
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Solution Overview
Problem
Metal housings in wireless communication devices often shield antenna signals, limiting their effectiveness across different frequency bands.
Innovation Solution
An antenna module with a metallic member featuring a slot and radiating portions, coupled to a system grounding plane, and a switching unit that adjusts frequency bands by enabling different current paths through switches, allowing the antenna to operate effectively across LTE, GSM, and UMTS bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a metal housing is used for wireless communication devices, then the device structure is strengthened and appearance is improved, but the antenna signal is shielded and communication effectiveness is reduced
Solution Approach 1:
The metal housing is segmented by creating a slot that divides the continuous metallic surface into separate regions. This segmentation allows electromagnetic waves to pass through the slot while maintaining the structural integrity and aesthetic appearance of the metal housing, thus resolving the contradiction between housing strength and signal effectiveness.
Solution Approach 2:
The slot acts as an intermediary element between the metal housing and the antenna signal. It mediates the interaction by allowing electromagnetic waves to penetrate through the housing structure, enabling signal transmission while preserving the metal housing's protective function.
2Device complexity
If a single antenna design is used, then the device structure is simple, but the antenna cannot operate effectively across different frequency bands
Solution Approach 1:
The antenna system employs switching elements that dynamically reconfigure the electrical connection between the antenna element and the feed network based on the desired frequency band. This dynamic switching capability allows a single physical antenna structure to adapt to multiple frequency bands (LTE, GSM, UMTS) without requiring separate antennas for each band.
Solution Approach 2:
The antenna design achieves multi-functionality by integrating multiple radiating elements and switching mechanisms into a single antenna module. This universal design allows the same antenna structure to serve multiple communication standards and frequency bands, eliminating the need for separate antenna systems for different networks.
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 antenna module achieves efficient signal transmission and reception across multiple frequency bands, with total radiating efficiency above 60%, satisfying design standards for wireless communication devices.
Implementation Method 1
Antennas are also important components in the wireless communication devices to receive/transmit wireless signals at different frequencies
Implementation Method 2
a switching unit that adjusts frequency bands by enabling different current paths through switches
Implementation Method 3
coupled to a system grounding plane
Data Source
AI summary
An antenna module includes a metallic member and a first radiating portion. The metallic member defines a slot. The slot is configured to divide the metallic member into a first metallic portion and a second metallic portion. The second metallic portion is spaced apart from the first metallic portion. The first radiating portion is positioned in the second metallic portion and is spaced apart from the second metallic portion. The first metallic portion is grounded. The first radiating portion is configured to receive a current signal and couple the current signal to the second metallic portion. The second metallic portion and the first metallic portion are configured to cooperatively activate a plurality of resonating modes through the slot.