Bung-Type Antenna With Hollow Dielectric Substrate
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Solution Overview
Problem
Conventional antennas for VHF or UHF frequency ranges are bulky due to long wavelengths, posing size and weight constraints for wireless radio communication systems.
Innovation Solution
A compact antenna structure featuring a three-dimensional support substrate with partially hollowed dielectric material and interwoven conductive patterns, allowing for a highly compact design with adjustable operating frequency and easy production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If conventional antenna designs are used for VHF or UHF frequency ranges, then the antenna can operate at the required frequency, but the antenna becomes bulky and heavy
Solution Approach 1:
The patent embeds the radiating elements directly within the hollow interior of the dielectric support substrate, nesting the functional components inside the structural component. This eliminates the need for separate external radiating structures, thereby reducing overall antenna volume while maintaining operational performance at VHF and UHF frequencies
Solution Approach 2:
The patent transitions from conventional two-dimensional planar antenna elements to a three-dimensional configuration by placing radiating elements along the internal surface of the hollow cylindrical substrate. This spatial reconfiguration allows the antenna to achieve resonant frequencies appropriate for VHF/UHF ranges within a compact volume, resolving the contradiction between small size and operational reliability
2Volume of moving object
If the antenna size is reduced to meet size constraints, then the antenna becomes compact, but the manufacturing complexity increases
Solution Approach 1:
The patent combines multiple functional elements into a single integrated structure: the dielectric support substrate simultaneously serves as the mechanical support, the hollow cavity forms the radiating structure, and the conductive elements are embedded within. This merging of functions simplifies the overall device complexity despite the compact three-dimensional configuration
Solution Approach 2:
The hollow dielectric substrate performs multiple functions: it provides mechanical support, defines the radiating cavity, and serves as the dielectric medium for electromagnetic resonance. This multi-functionality reduces the number of separate components needed, thereby simplifying manufacturing while achieving compact dimensions suitable for VHF and UHF applications
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
The solution results in an extremely compact antenna with adjustable frequency, suitable for applications with stringent size and weight constraints, offering simplicity and low production costs while maintaining high performance.
Implementation Method 1
a cylindrical dielectric bar (of high relative dielectric permittivity—greater than 5)
Data Source
Figure 1
Figure 2a~2g
Figure 3a~3c
AI summary
The invention relates to an antennal structure adapted to be disposed on an earth plane comprising: a three-dimensional support substrate made of a dielectric material which is partially hollowed out and comprising a peripheral wall which extends between a proximal end and a distal end, said support substrate defining an internal volume; a first conducting pattern inscribed on the peripheral wall of the support substrate, the first conducting pattern comprising a lower end adapted to be connected to an earth plane and an upper end; a second conducting pattern contained in the volume of the substrate, the second pattern being connected electrically to the upper end of the first pattern.