Conical Helical Antenna Radiator Manufacturing via Metal Stock Removal
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Solution Overview
Problem
Existing methods for manufacturing helical antenna radiator structures face challenges such as the need for dielectric substrates and consideration of springback in design, which can complicate the manufacturing process and affect the antenna's performance.
Innovation Solution
A method involving the gradual removal of metal stock to create a self-supporting helically shaped conductor using a frusto-conical structure, avoiding the need for dielectric substrates and minimizing springback issues, while allowing for various conical and cylindrical shapes and pitch angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a self-supporting helically-shaped conductor made of stiff metal is used, then the radiator structure can hold its shape without additional support, but significant effort is required in designing the form and separation process to address elastic recovery and springback
Solution Approach 1:
The patent applies preliminary action by pre-forming the helical shape through a molding process where the conductor is shaped while in a pliable state (e.g., heated or flexible material). This preliminary formation eliminates the need for complex form design and separation processes that would otherwise be required to achieve the same shape stability, directly resolving the contradiction between shape stability and manufacturing complexity.
2Stability of the object's composition
If a dielectric frame structure is used to support the helical conductor, then the conductor can maintain its shape, but additional dielectric materials and supporting structures are required
Solution Approach 1:
The patent merges the conductor and support structure into a single integrated component. The conductor itself is formed with the helical shape through molding, eliminating the need for separate dielectric frames or support structures. This merging directly resolves the contradiction by achieving shape stability through the conductor's own structure rather than external support, thereby reducing structural complexity.
Solution Approach 2:
The conductor serves dual functions: it conducts electromagnetic signals and simultaneously provides its own structural support through its molded helical shape. This self-service approach eliminates the need for separate dielectric support structures, resolving the contradiction between shape stability and structural complexity by making the conductor self-sufficient.
3Shape
If wire is wound around a form to create the helical shape, then the general shape can be established, but issues related to elastic recovery and springback require significant design effort
Solution Approach 1:
The patent replaces the mechanical wire-winding process with a molding process. Instead of mechanically winding wire around a form and dealing with elastic recovery, the conductor is formed in the desired helical shape through molding while the material is pliable. This substitution eliminates the need for complex form design and separation processes, directly resolving the contradiction between achieving the correct shape and minimizing design complexity.
Data Source
AI summary
An embodiment of the invention is directed to a method for manufacturing a radiator structure for a conical helical antenna that includes: (a) processing a piece of metal so as to produce a first metal structure with conical exterior and interior surfaces, and (b) processing the first metal structure to remove material between the conical exterior and interior surfaces to yield a radiator structure with a conical helical shaped conductor that can be combined with a ground plane to produce a conical helical antenna. In one embodiment, the radiator structure includes a matching structure and a cap with the conical helical conductor, matching structure, and cap being a single piece of metal.