Removable Case Supplemental Antenna Structures for Wireless Detuning
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Solution Overview
Problem
Removable cases for electronic devices with wireless circuitry often interfere with antenna performance due to materials like metal and dielectric components, leading to degraded wireless performance.
Innovation Solution
The removable case includes supplemental antenna structures that overlap and tune the antenna resonating elements of the electronic device, potentially incorporating tunable circuitry to adjust and restore desired frequency responses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a removable case with metal structures or dielectric materials is used to protect the electronic device, then the protective function is improved, but the antenna performance is degraded due to interference and detuning
Solution Approach 1:
The patent converts the harmful effect of case materials on antenna performance into a beneficial solution by incorporating supplemental antenna structures within the case. These supplemental structures are specifically designed to compensate for the detuning caused by dielectric materials and metal structures, thereby transforming the case from a harmful element into a component that actively maintains antenna performance while providing protection
Solution Approach 2:
The supplemental antenna structures act as an intermediary between the case materials and the original antenna. These structures mediate the interaction by providing additional radiating elements that compensate for the negative effects of the case, allowing the antenna system to maintain proper frequency response and performance despite the presence of interfering materials
2Reliability
If supplemental antenna structures are added to the removable case to restore antenna performance, then the wireless functionality is improved, but the device complexity increases
Solution Approach 1:
The patent merges the protective case function with the antenna compensation function into a single integrated structure. The supplemental antenna structures are incorporated within the case body, combining what would traditionally be separate components (case and antenna system) into one unified assembly, thereby reducing overall system complexity while maintaining both protection and wireless performance
Solution Approach 2:
The removable case is designed to perform multiple functions simultaneously: it provides physical protection for the electronic device, houses supplemental battery power, and incorporates supplemental antenna structures to maintain wireless functionality. This multi-functionality reduces the need for separate components and simplifies the overall system architecture
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
This solution ensures that the electronic device's antenna performance is maintained or restored, even when enclosed in the removable case, by compensating for detuning caused by case materials, thereby ensuring consistent wireless functionality.
Implementation Method 1
An antenna in the electronic device may have resonating element structures such as inverted-F antenna resonating element structures, slot antenna resonating element structures, and other resonating elements. The antenna in the electronic device has the potential of becoming detuned due to the presence of material in the removable case.
Implementation Method 2
Electronic devices often include wireless circuitry. For example, cellular telephones, computers, and other devices often contain antennas for supporting wireless communications with external equipment.
Data Source
AI summary
A removable case may receive an electronic device. A male connector in the case may mate with a female connector in the device. A battery in the case may supply power to the device through the male connector. The electronic device may have an antenna formed from peripheral conductive housing structures and an antenna ground. The antenna may include a slot antenna resonating element. The case may have supplemental antenna structures such as a metal patch that overlaps an end of the slot antenna resonating element to retune the slot antenna resonating element to a desired operating frequency after being detuned by dielectric loading from the case. The supplemental antenna structures may overlap antennas of other types and may include tunable circuitry that is adjusted based on information received from the electronic device.