Self-Aligning Waveguide Connector With Ball Detent RF Coupling
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Solution Overview
Problem
Waveguides used in communication systems are challenging to design and manufacture due to sensitivity to precision and geometry, leading to signal distortions and difficulties in joining segments, while coaxial cables are insufficient for high-frequency communication due to power and signal integrity limitations.
Innovation Solution
The development of separable waveguide connectors with radial and axial alignment and retention features, including a collar element and ball detent assembly, allows for precise alignment and low signal loss coupling between waveguide segments, enabling repeatable connections and decouplings without external hardware.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If waveguide segments are joined using permanent coupling with bolts and precision-manufacturing joint faces, then connection strength is improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The connector is divided into separable segments (first connector portion and second connector portion) that can be independently manufactured and assembled, eliminating the need for permanent bolting while maintaining connection integrity through complementary mating features
Solution Approach 2:
One connector portion is inserted into another to form a nested configuration, creating a compact joint structure that achieves strong coupling without external fasteners or complex assembly hardware
2Reliability
If waveguide segments are joined using permanent coupling, then connection reliability is improved, but ease of operation deteriorates
Solution Approach 1:
The connector transitions from a static permanent joint to a dynamic separable connection that allows repeated insertion and removal operations while maintaining reliable signal transmission through precision-machined mating surfaces and alignment features
3Ease of operation
If separable connectors are used to enable repeated coupling and decoupling, then ease of operation is improved, but manufacturing precision requirements increase
Solution Approach 1:
Alignment features such as protrusions and recesses are pre-formed during manufacturing to guide the mating connectors into precise alignment during assembly, eliminating the need for post-assembly adjustment and ensuring repeatable positioning across multiple coupling cycles
Solution Approach 2:
The connector design incorporates self-aligning and self-centering features that automatically compensate for minor manufacturing tolerances during assembly, reducing the stringency of precision requirements while maintaining low signal loss and proper geometric alignment
Data Source
AI summary
Provided herein are various examples of separable waveguide couplers. In one example, a collar element is provided to surround a member comprising a faying surface, a waveguide conduit, and alignment protrusions arranged radially about a perimeter of the faying surface, where the collar element is configured to accept insertion of a mating member comprising a mating faying surface and a mating waveguide conduit. A ball detent assembly is provided having a spring element that retains ball elements in holes formed through the collar element. The waveguide conduit and the mating waveguide conduit are configured to be aligned radially by at least engagement of the alignment protrusions with alignment channels in the mating member and restrained axially by at least engagement of the ball elements with mating divots in the mating member.