Terahertz Antenna Multi-Frequency Switching Bandwidth
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Solution Overview
Problem
Conventional terahertz source technology has limited bandwidth and low power, making it inadequate for identifying multiple components in hazardous chemical accidents, as it typically operates within tens to hundreds of GHz with weak power, often only a few milliwatts.
Innovation Solution
A terahertz transmitting antenna with a microstrip feed line, substrate, antenna switches, conducting plates, and antenna patches, utilizing multi-frequency switching technology to increase bandwidth and power, allowing for efficient transmission of terahertz waves across a wide frequency band.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional terahertz source technology is used, then the device structure is simple, but the bandwidth is limited to tens to hundreds of GHz and the power is weak at only a few milliwatts
Solution Approach 1:
The antenna is divided into multiple independent frequency segments, each corresponding to a specific frequency band (e.g., first frequency band, second frequency band, third frequency band). Each segment includes dedicated antenna elements and switching components that can be independently controlled to transmit signals in specific frequency ranges, thereby achieving multi-band operation and expanded bandwidth
Solution Approach 2:
The antenna incorporates dynamic switching mechanisms using antenna switches and conducting plates that can be dynamically reconfigured through voltage control. This allows the antenna to adaptively switch between different frequency bands and operational modes, transforming a static single-band antenna into a dynamic multi-band system that can adjust its characteristics based on detection requirements
2Adaptability or versatility
If conventional terahertz source technology is used, then the power output is sufficient for simple applications, but it cannot effectively identify multiple components in hazardous chemical accidents
Solution Approach 1:
The antenna is designed to perform multiple detection functions simultaneously by covering multiple frequency bands (first, second, and third frequency bands). Each band can be tuned to detect specific chemical components, allowing the system to identify multiple different hazardous chemicals in a single operation, thereby enhancing versatility and reducing the need for multiple separate detection devices
Solution Approach 2:
The antenna structure pre-configures multiple frequency band capabilities and switching mechanisms in advance. When detection is needed, the system can quickly switch between pre-configured frequency bands without requiring time-consuming reconfiguration, enabling rapid identification of multiple components by selecting appropriate frequency bands based on the detection targets
3Adaptability or versatility
If single frequency point terahertz source is used, then the device is simple to operate, but the bandwidth cannot cover the entire terahertz spectral detection range above 1 THz
Solution Approach 1:
The frequency spectrum is segmented into multiple discrete bands (first, second, third frequency bands), with each band covered by dedicated antenna elements and switching circuits. This segmentation allows the system to achieve broad overall frequency coverage by combining multiple narrow-band segments, effectively expanding the total operational bandwidth to cover the entire terahertz spectral detection range
Solution Approach 2:
Antenna switches and conducting plates serve as intermediary components that connect the input signal to different frequency-specific antenna elements. These intermediaries enable flexible routing of signals to appropriate frequency bands, allowing the system to achieve wide frequency coverage through a modular architecture where each segment can be independently optimized and controlled
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 enhances the transmitting bandwidth and power of the terahertz antenna, enabling rapid identification of specific substances by reducing operation time for spectral fingerprint recognition and improving detection capabilities in hazardous chemical environments.
Implementation Method 1
a terahertz wave transmitted in the microstrip feed line generates an excitation to the antenna patch through the antenna switch
Implementation Method 2
open and closed states of the antenna switch are controlled by varying a voltage between the conducting electrode opposite to the antenna switch and the conducting plate
Data Source
AI summary
The present application relates to a terahertz transmitting antenna including a microstrip feed line, a substrate, at least two antenna switches, at least one conducting plate, an insulating layer and at least two antenna patches. The terahertz transmitting antenna is provided with at least two antenna switches and at least two corresponding antenna patches, which substantially increases a transmitting bandwidth and a corresponding transmitting power of the terahertz transmitting antenna. The terahertz transmitting antenna with the increased transmitting bandwidth and the increased transmitting power can be applied to a small sized terahertz spectral detection device to assist the transmitting source to transmit the signal in the terahertz band. The terahertz transmitting antenna adopting the multi-frequency switching technology can reduce an operation time of a spectral fingerprint recognition algorithm to rapid identify specific target substances.