Camera-Adjacent Antenna Grounding for 5G Interference Control
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Solution Overview
Problem
In electronic devices supporting 5G communication, the increased frequency band for radio frequency signals leads to antennas being disposed adjacent to camera modules, causing transmission power from antennas to be induced into the camera module, which can affect communication between the camera and the processor, inconvenient for users.
Innovation Solution
A metal structure is coupled to the camera module, and a switching module with lumped elements is electrically connected to adjust impedance in response to the frequency band of RF signals, allowing the processor to control the switching module to ground the induced transmission power, preventing interference with camera communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If antennas are disposed adjacent to camera module to support 5G communication, then communication function is improved, but transmission power induces interference to camera module
Solution Approach 1:
The patent segments the antenna system into multiple independent antenna elements that can be selectively activated. By dividing the antenna function across multiple elements, the system can transmit signals while reducing the power induced to the camera module compared to a single high-power antenna configuration.
Solution Approach 2:
The patent employs dynamic impedance adjustment through switching modules that can change the electrical characteristics of the antenna system in real-time. This dynamic adaptation allows the antenna to maintain communication performance while minimizing power induction to the camera module by optimizing impedance matching conditions.
2Object-affected harmful factors
If switching module adjusts impedance to ground transmission power, then interference to camera module is reduced, but device complexity increases
Solution Approach 1:
The switching module is designed to perform multiple functions: impedance adjustment, power diversion to ground, and communication signal transmission. By making the switching module multi-functional, the patent reduces the need for separate dedicated components for each function, thereby managing device complexity while achieving power interference reduction.
Solution Approach 2:
The switching module acts as an intermediary between the antenna and the camera module, controlling the flow of transmission power. This intermediary component manages the interaction between the high-power antenna system and the sensitive camera module, diverting harmful power to ground while allowing necessary communication signals to pass through.
3Adaptability or versatility
If multiple antenna radiators are used to support increased frequency band, then communication capability is improved, but space requirement increases
Solution Approach 1:
The patent implements a nested antenna configuration where multiple antenna elements are arranged in a compact, space-efficient manner. The antenna elements are positioned to utilize three-dimensional space effectively, with some elements potentially integrated into or alongside other device components, thereby supporting multiple frequency bands without proportionally increasing the antenna area.
Solution Approach 2:
The patent transitions from two-dimensional antenna layouts to three-dimensional configurations, utilizing vertical spacing and angular orientations to accommodate multiple antenna radiators. By exploiting the third dimension and spatial relationships in multiple directions, the system supports increased frequency bands while minimizing the projected area occupied by the antenna system.
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 reduces or prevents the transmission power from antennas adjacent to the camera module from interfering with camera module communication, ensuring optimal communication between the camera and processor.
Implementation Method 1
a switching module electrically connected to the metal structure and including at least one lumped element so as to adjust impedance by using the at least one lumped element
Implementation Method 2
a metal structure disposed on and coupled to the camera module so as to cover a portion of the camera module
Implementation Method 3
a ground electrically connected to the metal structure through the switching module
Data Source
AI summary
An electronic device according to an embodiment may include a camera module, a metal structure, a first antenna adjacent to the camera module, a second antenna spaced from the camera module, a switching module electrically connected to the metal structure, including at least one lumped element, and adjusting an impedance by using the at least one lumped element, and at least one processor. The at least one processor is configured to transmit a signal in a first frequency band by feeding the first antenna and control the switching module such that the switching module has a first impedance corresponding to the first frequency band and electrically connects the metal structure and the ground when the transmission power of the first antenna is equal to or more than the designated value.