Millimeter-Wave Wireless Module Cover Mounting for Antenna Alignment
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Solution Overview
Problem
The existing wireless modules experience performance deterioration due to positional deviations between the antenna and the housing, leading to interference with electromagnetic waves and variations in polarization angles.
Innovation Solution
A wireless module design that includes a first board with an antenna for millimeter wave transmission and reception, a second board for baseband signals, and a housing with a cover and case that allows direct fixation of the first board to the cover, ensuring precise positional alignment and preventing interference through strategically placed passage portions and connectors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the antenna is accommodated in a housing with separate mounting, then the wireless module can be assembled, but positional deviation occurs between the antenna and housing leading to electromagnetic wave interference and polarization angle variation
Solution Approach 1:
The first board containing the antenna is directly fixed to the cover, merging the antenna mounting function with the housing structure. This eliminates the need for separate antenna mounting operations and ensures precise positional relationship between the antenna and the passage portion in the cover, thereby preventing electromagnetic wave interference and polarization angle variation.
2Manufacturing precision
If the first board is directly fixed to the cover, then positional relationship between antenna and passage portion is maintained, but the structure becomes more complex
Solution Approach 1:
The first board is directly fixed to the cover, combining the antenna mounting function with the housing structure. This integration simplifies the overall structure by eliminating separate antenna mounting components and operations, while ensuring precise positional alignment between the antenna and passage portion.
Data Source
AI summary
A wireless module includes a first board having an antenna, the antenna transmitting and receiving a high frequency signal in a millimeter wave band, a second board handling a baseband signal with a lower frequency than the high frequency signal, and a housing including a cover and a case combined with each other and accommodating the first board and the second board, in which a passage portion that allows electromagnetic waves transmitted and received by the antenna to pass through is provided in the cover, and the first board is fixed to the cover while being in contact with the cover.