Antenna Connector Integrated RF Switch for Waterproofing and Impedance
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Solution Overview
Problem
Portable communication devices with ferrule antennas face challenges in maintaining a 50-ohm impedance connection for RF power test measurements, requiring an RF switch that is difficult to seal and align with the antenna connector, leading to water sealing issues and inconsistencies in measurements.
Innovation Solution
An integrated RF switch within the antenna connector that maintains concentricity with the antenna connector and is sealed for waterproofing, using a housing bracket, core mounting member, and back mounting member with guiding sections to form a U-shaped channel for water sealing, and biased electrical contacts for proper impedance connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an RF switch is added to provide a 50-ohm impedance connection, then RF power test measurements can be performed, but water sealing issues and cosmetic problems occur due to the extra opening in the housing
Solution Approach 1:
The RF switch is integrated into the antenna connector assembly, merging two previously separate components (antenna connector and RF switch) into a single unified structure. This eliminates the need for a separate opening in the housing, as the RF switch accesses the antenna connector through the same opening, thereby maintaining water sealing and cosmetic integrity while enabling RF power test measurements
Solution Approach 2:
The antenna connector assembly is designed to serve multiple functions: it provides both the antenna connection interface and the RF switch access point. The single opening in the housing serves dual purposes - allowing antenna attachment and providing access to the RF switch for test measurements, eliminating the need for additional openings that would compromise water sealing
2Ease of operation
If an RF switch is placed separate from the antenna connector, then the RF switch can be accessed, but misalignment occurs between the RF switch and antenna connector causing inconsistency in RF power test measurements
Solution Approach 1:
By integrating the RF switch into the antenna connector assembly, the invention ensures that the RF switch and antenna connector are inherently aligned through their shared mounting structure. The RF switch is positioned within the antenna connector housing, eliminating misalignment issues that occur with separate components while maintaining easy accessibility through the same opening
3Ease of operation
If an RF switch is placed separate from the antenna connector, then the RF switch can be accessed, but the two components easily become misaligned increasing wear rate for RF probes
Solution Approach 1:
The integration of the RF switch into the antenna connector assembly ensures precise and consistent alignment between the RF switch contact and antenna connector contact. This eliminates the misalignment and excessive wear on RF probes that occurs with separate components, as the unified structure maintains proper alignment throughout the device lifecycle
Solution Approach 2:
The RF switch and antenna connector are pre-aligned and mounted together as a single assembly during manufacturing. This preliminary alignment ensures that no misalignment occurs during field operation or assembly, preventing increased wear on RF probes that would result from repeated adjustments or misalignments
Data Source
AI summary
An antenna connector for a portable communication device including, in one implementation, a housing bracket, a core mounting member, a front mounting member, and a back mounting member. The housing bracket includes an antenna barrel that is configured to engage a ferrule antenna connector. The core mounting member includes a radio-frequency (RF) switch that includes a ground barrel, a first electrical contact, and a second electrical contact. The second electrical contact is configured to disconnect from the first electrical contact when a coaxial connector engages completely with the ground barrel. The front mounting member includes a front guiding section that is configured to connect with the core mounting member. The front guiding section is further configured to align the ground barrel with the antenna barrel. The back mounting member includes a back guiding section to keep the core mounting member connected to the front guiding section.