Tapered Monopole Antenna for Wideband PD Localization
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Solution Overview
Problem
Conventional patch antennas do not achieve a large bandwidth, making them inadequate for efficient detection and localization of Partial Discharge (PD) in medium and high voltage apparatuses, particularly due to their size limitations.
Innovation Solution
The development of a compact antenna device featuring a ground plane, a monopole, and a microstrip line, with a tapered shape to enhance bandwidth and impedance matching, allowing for effective PD detection and localization across the UHF frequency range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional patch antennas are used, then the structure is simple and fabrication is easy, but the bandwidth is insufficient for effective PD detection
Solution Approach 1:
The antenna is divided into distinct functional segments: a ground plane, a monopole element, and a microstrip line feed. This segmentation allows each component to be optimized independently for its specific function while maintaining overall fabrication simplicity and achieving enhanced bandwidth through proper geometric configuration of each segment.
Solution Approach 2:
The patent transitions from conventional two-dimensional patch antenna designs to a three-dimensional structure incorporating a vertical monopole element extending from the ground plane. This dimensional extension enables the antenna to achieve broader bandwidth by utilizing additional spatial dimensions for resonance and impedance matching, while maintaining planar fabrication compatibility.
2Volume of moving object
If the antenna size is reduced for compactness, then the device becomes more compact, but the bandwidth and detection effectiveness deteriorate
Solution Approach 1:
The antenna incorporates a tapered monopole structure where the width varies along the length, creating a dynamic geometric profile rather than a uniform cross-section. This dynamic configuration allows the antenna to support multiple resonant modes within a compact volume, achieving broad bandwidth without requiring large physical dimensions. The taper ratio and length are optimized to balance compactness with detection effectiveness.
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 antenna device achieves superior performance with reduced size, maintaining high directivity and gain over a broad frequency band, enabling efficient detection and localization of PD in medium and high voltage devices, while being cost-effective and easier to fabricate compared to conventional antennas.
Implementation Method 1
The antenna includes a ground plane, a monopole and a microstrip line... achieving superior performance with reduced size, maintaining high directivity and gain over a broad frequency band, enabling efficient detection and localization of PD
Data Source
AI summary
An antenna and a detecting device are provided. The antenna includes a ground plane, a pole and a microstrip line. The detecting device includes an oscilloscope and the antenna that is connected with the oscilloscope.