Quarter Wavelength Patch Antenna Housing Integration
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Solution Overview
Problem
Portable communication devices face challenges in providing sufficient bandwidth and efficient antenna performance due to their small size, making it difficult to accommodate antennas with appropriate dimensions for frequencies like 2.4 GHz, especially with limited power supply constraints.
Innovation Solution
A communication device with a wireless interface featuring a quarter wavelength patch antenna integrated into the housing, electromagnetically coupled with a ground plane and additional layers for enhanced resonance, allowing for compact design while maintaining effective wireless transmission and reception capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the antenna dimensions are increased to achieve sufficient bandwidth and efficiency, then the antenna performance is improved, but the device size increases beyond portable limits
Solution Approach 1:
The patent implements a stacked patch antenna structure where multiple radiating patches are arranged in vertical layers. Each patch is electrically connected to the ground plane through feeding structures, creating a nested configuration that achieves multiple resonant frequencies within a compact volume. This nested arrangement allows the antenna to provide sufficient bandwidth for 2.4 GHz operation while maintaining device dimensions suitable for portable communication devices.
Solution Approach 2:
The patent transitions from a planar two-dimensional antenna layout to a three-dimensional stacked structure. By arranging multiple radiating patches in vertical layers separated by dielectric substrates, the antenna achieves enhanced bandwidth and resonant frequency control without increasing the horizontal footprint. This dimensional transition enables the antenna to meet performance requirements while maintaining compact device dimensions.
2Adaptability or versatility
If the antenna dimensions are increased to achieve sufficient bandwidth, then the bandwidth is improved, but the device size increases beyond portable limits
Solution Approach 1:
The stacked patch antenna structure nests multiple radiating elements in vertical layers, with each patch contributing to different resonant frequencies. The patches are fed through microstrip lines and capacitive structures that enable independent impedance control. This nested configuration provides broadband operation covering 2.4 GHz and other frequency bands while maintaining a compact form factor suitable for portable devices.
Solution Approach 2:
The patent employs composite material structures combining dielectric substrates with conductive radiating patches and feeding elements. The dielectric layers provide electrical isolation and mechanical support, while the conductive patches create resonant structures. This composite approach enables precise control of resonant frequencies and impedance matching, achieving sufficient bandwidth without increasing device volume.
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 provides a compact and efficient wireless interface that maintains effective wireless transmission and reception, even in small portable devices, with improved resistance to handling and increased bandwidth, suitable for frequencies from 300 MHz to 6 GHz.
Implementation Method 1
an antenna comprising a first quarter wavelength patch and a ground plane comprising an electrically conductive material
Implementation Method 2
the first quarter wavelength patch and the ground plane are separated by an electrically insulating layer
Implementation Method 3
the antenna comprises at least one electrical RF-connection between the first quarter wavelength patch and the ground plane
Data Source
AI summary
The invention relates to a communication device comprising a wireless interface for enabling wireless transmission and/or reception at a predefined wavelength λc to be established. The object of the present invention is to provide an antenna suitable for wireless communication in a portable communication device. The problem is solved in that the communication device comprises a housing having an electrically conductive part, the wireless interface comprising an antenna comprising a first quarter wavelength patch and a ground plane comprising an electrically conductive material, the first quarter wavelength patch being at least partially constituted by said electrically conductive part of the housing. This has the advantage of providing an alternative wireless interface for a communication device. The invention may e.g. be used in portable communication devices with a wireless interface for communication with another device, in particular in a headset or a headphone or an active earplug.