PCB Sector Cavity Antenna With Switchable Via Reconfiguration
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Solution Overview
Problem
Integrating antennas into mobile and wearable devices poses challenges in design and manufacturing, particularly in maintaining both practical functions and fashionable appearances.
Innovation Solution
A sector cavity antenna is integrated into a printed circuit board (PCB) with a configurable switchable via wall, allowing for multiple antennas to be placed along the edge, supporting multiband communications and providing flexibility in cavity volume and performance through switchable vias.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple antennas are integrated into a PCB, then wireless communication functionality is improved, but device complexity increases
Solution Approach 1:
Multiple antenna elements are integrated into a single PCB structure, combining multiple wireless communication functions into one unified component. The PCB integrates multiple radiating elements, feeding networks, and grounding structures into a single manufactured unit, reducing the number of separate components while maintaining multiband and MIMO capabilities.
Solution Approach 2:
The PCB antenna structure is designed to support multiple wireless communication standards and frequency bands simultaneously. The same physical structure can operate across different bands (e.g., 2.4GHz, 5GHz, sub-6GHz) and support multiple polarization modes, making it a universal antenna solution for modern wireless devices.
2Area of stationary object
If antenna integration is implemented, then space utilization is improved, but manufacturing difficulty increases
Solution Approach 1:
The antenna structure is divided into discrete radiating elements, feeding networks, and grounding structures that can be independently designed and optimized. Each element is segmented into specific PCB traces and vias that can be manufactured using standard PCB fabrication processes, making the complex integrated structure manufacturable through conventional means.
Solution Approach 2:
The antenna design utilizes the third dimension by incorporating vias that connect different PCB layers. The radiating elements extend across multiple layers of the PCB, with vertical via connections creating three-dimensional current paths. This dimensional approach allows compact planar integration while maintaining effective radiating area.
3Adaptability or versatility
If switchable vias are added for reconfigurability, then adaptability is improved, but device complexity increases
Solution Approach 1:
The antenna structure incorporates switchable vias that can dynamically change the electrical connectivity between different parts of the antenna. By controlling the state of these vias (connected or disconnected), the antenna can reconfigure its effective electrical length, impedance, and resonant frequency to adapt to different operating conditions and frequency bands.
Data Source
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AI summary
Embodiments include apparatuses, methods, and systems including an electronic apparatus having a configurable sector cavity antenna integrated into a PCB. The configurable sector cavity antenna may include a first panel embedded within a first layer of the PCB along an edge of the first layer, and a second panel embedded within a second layer of the PCB along an edge of the second layer. The configurable sector cavity antenna may further include a fixed via wall to couple the first panel and the second panel along an inner edge of the first panel and the inner edge of the second panel, and a switchable via wall to selectively couple multiple interior points of the first panel and multiple interior points of the second panel. Other embodiments may also be described and claimed