Broadband Antenna with Decoupling Element and Ferrite Cores
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Solution Overview
Problem
Existing broadband antennas with monopole and dipole configurations suffer from suboptimal directional properties, large optical cross-section, and suboptimal frequency response, limiting their applications due to inefficient frequency range coverage and size constraints.
Innovation Solution
A broadband antenna design featuring a monopole and dipole with a common longitudinal axis, incorporating a decoupling element with ferrite cores to dampen standing waves, and a transformer-like impedance matching mechanism using inductances and a filter for optimal signal allocation across frequency ranges, allowing for compact dimensions and improved transmission properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a broadband antenna with monopole and dipole is used for different frequency ranges, then the frequency coverage is improved, but the directional properties and frequency response become suboptimal
Solution Approach 1:
A decoupling element is introduced between the monopole and dipole to prevent mutual interference. This intermediary component allows both antennas to operate simultaneously across different frequency ranges while maintaining optimal directional properties and frequency response for each antenna type.
2Adaptability or versatility
If a broadband antenna with monopole and dipole configuration is used, then the frequency range coverage is improved, but the optical cross-section becomes very large
Solution Approach 1:
The dipole antenna is positioned within the structural space of the monopole antenna, with the dipole's antenna bodies arranged concentrically around the monopole's longitudinal axis. This nested configuration allows both antennas to occupy overlapping spatial volumes, significantly reducing the overall optical cross-section while maintaining broadband frequency range coverage.
3Reliability
If the dipole and monopole are arranged with common longitudinal axis, then the directional characteristics are improved, but the manufacturing complexity increases
Solution Approach 1:
The decoupling element serves multiple functions simultaneously: it provides mechanical support for positioning the dipole relative to the monopole, establishes the common longitudinal axis alignment, and electrically decouples the two antennas to prevent interference. This multi-functionality simplifies the overall structure despite the sophisticated spatial arrangement.
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 design achieves advantageous directional characteristics, high antenna gain over a wide frequency range, and compact dimensions, enhancing signal transmission stability and efficiency while reducing manufacturing complexity.
Implementation Method 1
A decoupling element preferably dampens standing waves. This avoids interference and thus increases the antenna gain. The decoupling element advantageously contains a plurality of ferrite cores.
Implementation Method 2
The decoupling element advantageously contains a plurality of ferrite cores. The line is advantageously routed through at least part of the ferrite cores.
Implementation Method 3
The loading element performs impedance matching. In this way, optimal impedance matching is achieved even in the monopoly with little manufacturing effort. The loading element preferably consists of at least one ferrite core.
Data Source
Figure 1~2
Figure 3a~3b
Figure 4
AI summary
An antenna (1) comprises a monopole (13) and a dipole (10). The dipole (10) has a first antenna body (12) and a second antenna body (11) which share a longitudinal axis with the longitudinal axis of the monopole (13). The first antenna body (12) of the dipole (10) is connected to the second antenna body (11) of the dipole (10) and to the monopole (13). The monopole (13) carries the dipole (10). The antenna (1) further contains a decoupling element (16) which is interposed between the monopole (13) and the dipole (10).