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Author:
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ISBN:
Category :
Languages : en
Pages : 34
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 34
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Book Description
Author: Ebbe Nyfors
Publisher: Artech House Microwave Library
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 376
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Book Description
Textbook designed for an advanced undergraduate course in industrial applications of microwaves. Provides knowledge about the possibilities of the microwave technique in implementing practical measurement sensors. Knowledge of the fundamentals of physics and electronics is assumed. Annotation copyri
Author: Krzysztof Iniewski
Publisher: CRC Press
ISBN: 1466568119
Category : Technology & Engineering
Languages : en
Pages : 598
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Book Description
Sensor technologies are a rapidly growing area of interest in science and product design, embracing developments in electronics, photonics, mechanics, chemistry, and biology. Their presence is widespread in everyday life, where they are used to sense sound, movement, and optical or magnetic signals. The demand for portable and lightweight sensors is relentless in several industries, from consumer electronics to biomedical engineering to the military. Smart Sensors for Industrial Applications brings together the latest research in smart sensors technology and exposes the reader to myriad applications that this technology has enabled. Organized into five parts, the book explores: Photonics and optoelectronics sensors, including developments in optical fibers, Brillouin detection, and Doppler effect analysis. Chapters also look at key applications such as oxygen detection, directional discrimination, and optical sensing. Infrared and thermal sensors, such as Bragg gratings, thin films, and microbolometers. Contributors also cover temperature measurements in industrial conditions, including sensing inside explosions. Magnetic and inductive sensors, including magnetometers, inductive coupling, and ferro-fluidics. The book also discusses magnetic field and inductive current measurements in various industrial conditions, such as on airplanes. Sound and ultrasound sensors, including underwater acoustic modem, vibrational spectroscopy, and photoacoustics. Piezoresistive, wireless, and electrical sensors, with applications in health monitoring, agrofood, and other industries. Featuring contributions by experts from around the world, this book offers a comprehensive review of the groundbreaking technologies and the latest applications and trends in the field of smart sensors.
Author: Ferran Martín
Publisher: John Wiley & Sons
ISBN: 1119811058
Category : Technology & Engineering
Languages : en
Pages : 484
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Book Description
Comprehensive resource detailing the latest advances in microwave and wireless sensors implemented in planar technology Planar Microwave Sensors is an authoritative resource on the subject, discussing the main relevant sensing strategies, working principles, and applications on the basis of the authors’ own experience and background, while also highlighting the most relevant contributions to the topic reported by international research groups. The authors provide an overview of planar microwave sensors grouped by chapters according to their working principle. In each chapter, the working principle is explained in detail and the specific sensor design strategies are discussed, including validation examples at both simulation and experimental level. The most suited applications in each case are also reported. The necessary theory and analysis for sensor design are further provided, with special emphasis on performance improvement (i.e., sensitivity and resolution optimization, dynamic range, etc.). Lastly, the work covers a number of applications, from material characterization to biosensing, including motion control sensors, microfluidic sensors, industrial sensors, and more. Sample topics covered in the work include: Non-resonant and resonant sensors, reflective-mode and transmission-mode sensors, single-ended and differential sensors, and contact and contactless sensors Design guidelines for sensor performance optimization and analytical methods to retrieve the variables of interest from the measured sensor responses Radiofrequency identification (RFID) sensor types, prospective applications, and materials/technologies towards “green sensors” implementation Comparisons between different technologies for sensing and the advantages and limitations of microwave sensors, particularly planar sensors Engineers and qualified professionals involved in sensor technologies, along with undergraduate and graduate students in related programs of study, can harness the valuable information inside Planar Microwave Sensors to gain complete foundational knowledge on the subject and stay up to date on the latest research and developments in the field.
Author: David James Rowe
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Matter can be identified by its interaction with electromagnetic fields. This can be described by its dielectric and magnetic properties, which typically vary with respect to frequency in the microwave region. Microwave-frequency spectroscopy is capable of making non-contact, non-destructive, non-invasive and label-free measurements with respect to time. It can be used to characterise all states of matter and combinations thereof, such as colloids and microparticulate suspensions. Sensors based upon this technology therefore have great potential for (bio)chemical and industrial point-of-sampling applications where existing measurement techniques are insufficiently portable, low-cost or sensitive. Microfluidics is the manipulation of fluids within microscale geometries. This gives rise to phenomena not observed at the macroscale that can be exploited to achieve enhanced control of fluid flow. This means that microfluidic techniques can be used to perform complex chemistry in a completely sealed environment with minimal reagent consumption. Hence, microfluidics offers an ideal sample interfacing method for a microwave-frequency sensor. This work is concerned with developing novel, low-cost and highly sensitive probes that be easily integrated into a microfluidic device for performing on-chip sample preparation and diagnostics for generic (bio)chemical and industrial point-of-sampling applications. To this end, several novel microwave resonant structures were designed, optimised and integrated into microfluidic devices in order to characterise a variety of liquid-phase samples.
Author: Alexander Naylon
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Microwave resonant sensors use the spectral characterisation of a resonator to make high sensitivity measurements of material electromagnetic properties at GHz frequencies. They have been applied to a wide range of industrial and scientific measurements, and used to study a diversity of physical phenomena. Recently, a number of challenging dynamic applications have been developed that require very high speed and high performance, such as kinetic inductance detectors and scanning microwave microscopes. Others, such as sensors for miniaturised fluidic systems and non-invasive blood glucose sensors, also require low system cost and small footprint. This thesis investigates new and improved techniques for implementing microwave resonant sensor systems, aiming to enhance their suitability for such demanding tasks. This was achieved through several original contributions: new insights into coupling, dynamics, and statistical properties of sensors; a hardware implementation of a realtime multitone readout system; and the development of efficient signal processing algorithms for the extraction of sensor measurements from resonator response data. The performance of this improved sensor system was verified through a number of novel measurements, achieving a higher sampling rate than the best available technology yet with equivalent accuracy and precision. At the same time, these experiments revealed unforeseen applications in liquid metrology and precision microwave heating of miniature flow systems.
Author: Ferran Martín
Publisher: Springer Nature
ISBN: 3031538617
Category :
Languages : en
Pages : 474
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Book Description
Author: Shinong Mao
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Microwave technology presents tremendous potential as a remote-sensing technology for a wide range of applications spanning from life science research to food industries, pharmaceutical research, and new material discoveries. Integration of microwave sensing with microfluidics for sample processing makes it an ideal choice for point of care applications highly demanded in resourcelimited areas. The vast majority of the existing microwave sensors are manufactured using sophisticated soft lithography technology which has largely limited its development and applications. There is a large demand for developing new fabrication approaches for the feasibility of mass production at a reasonable cost. In this thesis, a new, yet simple method is developed to fabricate split ring resonator (SRR) based microwave sensors. A simple RLC model is used to characterize the resonant frequency of the SRR, and the equations for calculating the RLC's resonant frequency is modified to predict the SRR's resonant frequency base on its geometry. The design is also validated by comparing the simulation results obtained using the commercial software HFSS, and measurements from a real SRR developed sensor. The double ring structure was fabricated onto a printed circuit board by using the industrial photolithograph method. Coating with PDMS and epoxy layer as the passivation layer was tested and compared. Two testing approaches using the SRR sensor developed in this thesis are implemented in this thesis. Their performance for real-time sensing is characterized by applying it to differentiate chemical diary samples and other chemical solutions. In the dipping mode, the sensor is dipped in the material under test (MUT), and in the microfluidic channel mode, the sensor is integrated with a microchannel. The MUT is characterized by analyzing the spectrum data of the reflection coefficient as the function of frequencies. Experimental results indicate that this sensor is capable of differentiating various liquid samples such as DI water, ethanol, isopropanol, oil and salt solutions. Linear relationships between the resonant frequency and the concentrations of chemical composites are also observed in ethanol solutions (0-90%), and salt solutions (NaCl). This sensor is also used to differentiate various milk samples and milk dilutions and it is capable of distinguishing milks with different fat percentages and protein contents. A fully customized vector network analyzer (VNA) is also developed. The circuit structure is designed by referring the existing customized VNAs that were implemented in previous work by iv other lab colleagues. Modifications are made including replacement of the microwave source, using Arduino platform to perform controlling and data acquisition, addition of a harmonic filtering device, and development of a calibration algorithm. The device is validated by comparing its measuring result with a commercial VNA. The customized VNA is able to output a similar spectrum pattern as the commercial VNA, but with slightly shift of the peak frequency.
Author: H. Rauh
Publisher:
ISBN:
Category : Cavity resonators
Languages : en
Pages : 18
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Book Description
Author: Mohammad Tariqul Islam
Publisher: CRC Press
ISBN: 100091903X
Category : Technology & Engineering
Languages : en
Pages : 297
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Book Description
Metamaterials are geometrically patterned new materials that are arranged in periodic way on top of dielectric substrates to exhibit properties unobtainable naturally. This book discusses artificially engineered structures for the development of metamaterials and meta surfaces in the advancement of microwave sensors in sensing technology, non-invasive microwave-based imaging system, antenna performance improvement with miniaturization, flexible materials for microwave applications and finally metamaterials in antennas for its use in nanosatellites. The book serves as a reference for designing industrial applications of metamaterials in 5G wireless communication system and healthcare technology using metamaterials and meta surfaces. This well illustrated book will be a useful resource for students, engineers, physicists, and other researchers for various microwave applications. It provides newcomers with fundamental knowledge of metamaterials and their prospective applications. The researchers will benefit from thought-provoking perspectives that will enhance their knowledge and steer them to modern day innovation.
