Ceramic Antenna Strip Line Press Forming
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Solution Overview
Problem
Conventional omnidirectional antennas require extensive post-processing steps like painting, drying, and etching, leading to decreased productivity and increased production costs due to lengthy processing times.
Innovation Solution
An omnidirectional antenna design featuring a ceramic dielectric core with a press-formed copper, silver, or nickel strip line covering its outer circumference, a cap with a central hole, and a feeder inserted through the core and cap, fixed with a thermal shrinkage tube for efficient assembly and reduced processing time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the electrical pattern line is painted on the surface of the dielectric core, then the antenna can be manufactured, but the processing time increases and productivity decreases
Solution Approach 1:
The patent replaces the conventional painting method (chemical/mechanical process) with a press-formed metal strip line (mechanical forming process). The strip line is created by pressing metal material into the desired pattern shape, which can then be attached to or integrated with the dielectric core, eliminating the need for painting, drying, and etching steps.
Solution Approach 2:
The invention changes the physical state and form of the electrical pattern from a painted coating to a three-dimensional press-formed metal strip. This parameter change from two-dimensional surface coating to three-dimensional structured component fundamentally alters the manufacturing process, enabling faster production through mechanical pressing and attachment rather than multi-step surface treatment.
2Manufacturing precision
If conventional painting and post-processing methods are used, then the electrical pattern can be formed, but the production cost increases
Solution Approach 1:
The patent replaces multiple chemical and mechanical processing steps (painting, drying, etching, laser processing) with a single press-forming operation followed by simple attachment. This substitution of complex multi-step processes with a simpler mechanical forming and attachment process directly reduces manufacturing cost while maintaining pattern formation precision.
Solution Approach 2:
The invention separates the electrical pattern formation (press-forming the metal strip) from the dielectric core manufacturing, allowing each component to be produced independently and then assembled. This segmentation enables parallel production and simplifies quality control, reducing overall manufacturing cost compared to the integrated painting process.
3Productivity
If the feeder is inserted through the dielectric core and fixed with thermal shrinkage tube, then assembly is simplified and productivity increases, but additional components are required
Solution Approach 1:
The patent introduces a thermal shrinkage tube as an intermediary component to secure the feeder to the dielectric core. This simple intermediary element provides a reliable mechanical and electrical connection without requiring complex welding or threading operations, thereby simplifying the assembly process and increasing productivity despite adding one component.
Solution Approach 2:
The thermal shrinkage tube utilizes phase transition (thermal expansion and contraction) to achieve its function. The tube is heated to expand, placed over the feeder, then allowed to cool and contract, creating a tight mechanical fit. This phase transition mechanism provides a simple, tool-free method for securing the feeder, enhancing assembly efficiency.
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
This design significantly enhances productivity and lowers production costs by simplifying the assembly process and eliminating the need for extensive post-processing, while maintaining effective omnidirectional reception capabilities.
Implementation Method 1
a thermal shrinkage tube for combining the lower cap and the strip line to the dielectric core
Data Source
AI summary
The omnidirectional antenna of the present invention comprises a dielectric core 20 of ceramic material which has a longitudinal hole 21 formed in the center; a strip line 30 which is bent to fit the circumference of the dielectric core 20 by a press-forming method and is covered over the upper outer circumference of the dielectric core; a lower cap 40 which is inserted over the bottom end of the dielectric core and has a hole formed at the center of the bottom; a feeder 50 which is passed through and inserted from down to up into the holes formed in the bottom cap and the dielectric core and the top end of which is connected with the strip line 30 on the upper surface of the dielectric core; and a strip line fixing means 60 for combining the lower cap and strip line to the dielectric core.