Waveguide Antenna Press-Fit Mounting for Precise PCB Alignment
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Solution Overview
Problem
Existing methods for integrating waveguide antennas on circuit boards, such as soldering, adhesive bonding, or screwing, are costly, require significant space, and result in high positional tolerances, making precise alignment and secure retention challenging.
Innovation Solution
The use of press-in pins, made of metal, which are inserted into sleeves on the circuit board during mounting, forming a secure fixation with the antenna, allowing for precise positioning and reduced tolerances through a force fit and intermetallic connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If soldering, adhesive bonding, or screwing methods are used to integrate waveguide antennas on circuit boards, then the antenna can be securely attached, but the manufacturing cost increases, space requirements increase, and positional tolerances worsen
Solution Approach 1:
The patent replaces traditional mechanical joining methods (soldering, adhesive bonding, screwing) with a press-fit mechanical insertion system. Press-in pins are inserted into corresponding holes in the circuit board, creating a secure mechanical connection without requiring thermal processes, adhesives, or fastening hardware. This substitution reduces manufacturing complexity and cost while maintaining secure retention.
Solution Approach 2:
The patent extracts and eliminates unnecessary intermediate materials and processes from the joining system. By using direct press-fit insertion of pins into holes, it removes the need for solder, adhesive layers, screw threads, and associated fastening hardware. This extraction simplifies the manufacturing process and reduces both material costs and process complexity.
2Reliability
If soldering, adhesive bonding, or screwing methods are used to integrate waveguide antennas on circuit boards, then the antenna can be securely attached, but the space requirements increase
Solution Approach 1:
The patent removes intermediate bonding materials and fastening components from the assembly. By using direct press-fit pins without solder, adhesive layers, or screw heads, the overall footprint and thickness of the antenna-circuit board assembly is reduced, optimizing space utilization.
Solution Approach 2:
The patent combines the positioning and retention functions into a single integrated press-fit pin system. The pins serve both as positioning elements and as retention mechanisms, eliminating the need for separate positioning features and fastening components, thereby reducing the overall space required.
3Reliability
If soldering, adhesive bonding, or screwing methods are used to integrate waveguide antennas on circuit boards, then the antenna can be securely attached, but the positional tolerances increase
Solution Approach 1:
The patent divides the retention system into discrete press-fit pins positioned at critical locations. This segmentation allows for localized precision control at each pin position, enabling accurate positioning and alignment of the antenna relative to the circuit board while maintaining secure retention through the distributed pin array.
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
Achieves cost-effective, space-efficient, and high-quality joint with minimal positional tolerances of less than 0.1 mm, enhancing stability and stiffness while reducing manufacturing costs and space requirements.
Implementation Method 1
the at least one press-in pin is inserted into the at least one sleeve in an accurately fitting manner and is then pressed in. In the process, the at least one press-in pin deforms in the at least one sleeve, and the at least one press-in pin and the at least one sleeve form a fixation for the antenna at the circuit board
Implementation Method 2
possibly due to diffusion processes, which establish an intermetallic connection between the at least one press-in pin and the metallic lining of the at least one sleeve
Data Source
AI summary
A radar system, which includes an antenna for sending and/or receiving radar signals and a circuit board including at least one high-frequency component and an element for sending and/or receiving high-frequency signals. The antenna includes at least one press-in pin, which is introduced into the antenna. At least one sleeve is situated on/at the circuit board, into which the press-in pin is inserted. The at least one press-in pin cooperates with the at least one sleeve in such a way that, when the antenna is being pushed onto the circuit board, the press-in pin is pressed into the at least one sleeve and deforms, providing fixation.