Pub Date : 2023-02-07DOI: 10.1109/IMAS55807.2023.10066881
Mohamed Akmal, Ahmed Alieldin, A. R. Eldamak
This paper presents a new configuration of a printed helical circular polarization antenna with a rectangular cross-section to emit an end-fire beam. The antenna is designed for anti-attacking systems that work against attackers guided by global navigation satellite systems. It has the ability to handle a peak power up to 696.3 kW. The antenna achieves a wide impedance bandwidth and 3-dB axial ratio bandwidth range from 1.13 GHz to 1.7 GHz covering the whole global navigation satellite systems frequency band. The antenna has a stable gain of 6.4 dBic across the whole frequency band. It has a low profile of $0.7lambda_{0}$. The antenna small size, low cost, simple structure, high power handling capabilities and good performance make it suitable for anti-attacking systems.
{"title":"A Printed Helical Circular Polarization Antenna for GNSS Anti-Attacking System","authors":"Mohamed Akmal, Ahmed Alieldin, A. R. Eldamak","doi":"10.1109/IMAS55807.2023.10066881","DOIUrl":"https://doi.org/10.1109/IMAS55807.2023.10066881","url":null,"abstract":"This paper presents a new configuration of a printed helical circular polarization antenna with a rectangular cross-section to emit an end-fire beam. The antenna is designed for anti-attacking systems that work against attackers guided by global navigation satellite systems. It has the ability to handle a peak power up to 696.3 kW. The antenna achieves a wide impedance bandwidth and 3-dB axial ratio bandwidth range from 1.13 GHz to 1.7 GHz covering the whole global navigation satellite systems frequency band. The antenna has a stable gain of 6.4 dBic across the whole frequency band. It has a low profile of $0.7lambda_{0}$. The antenna small size, low cost, simple structure, high power handling capabilities and good performance make it suitable for anti-attacking systems.","PeriodicalId":246624,"journal":{"name":"2023 International Microwave and Antenna Symposium (IMAS)","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132418128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-07DOI: 10.1109/IMAS55807.2023.10066893
C. Bauder, Abdel-Kareem Moadi, P. Theilmann, A. Fathy
With the increased concern over contact-transmitted diseases and the rapid growth in the field of telemedicine, it is critical to develop remote diagnostic systems to meet these needs. In this paper, multiple methods of remote vital sign estimation are explored and combined to form a multi-functional remote health monitoring system. Camera-based systems are utilized to estimate patient heart rate, blood pressure, SpO2, and temperature under the assumption of adequate lighting. Similarly, radar-based systems are used as a more robust method to estimate patient heart and respiration rate. These two methods are used simultaneously to capture all of the major vital signs of human subjects. Results show the proposed system can perform with high accuracy in each of its functionalities.
{"title":"Development of a Multi-Functional Remote Health Monitoring System","authors":"C. Bauder, Abdel-Kareem Moadi, P. Theilmann, A. Fathy","doi":"10.1109/IMAS55807.2023.10066893","DOIUrl":"https://doi.org/10.1109/IMAS55807.2023.10066893","url":null,"abstract":"With the increased concern over contact-transmitted diseases and the rapid growth in the field of telemedicine, it is critical to develop remote diagnostic systems to meet these needs. In this paper, multiple methods of remote vital sign estimation are explored and combined to form a multi-functional remote health monitoring system. Camera-based systems are utilized to estimate patient heart rate, blood pressure, SpO2, and temperature under the assumption of adequate lighting. Similarly, radar-based systems are used as a more robust method to estimate patient heart and respiration rate. These two methods are used simultaneously to capture all of the major vital signs of human subjects. Results show the proposed system can perform with high accuracy in each of its functionalities.","PeriodicalId":246624,"journal":{"name":"2023 International Microwave and Antenna Symposium (IMAS)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131966016","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-07DOI: 10.1109/IMAS55807.2023.10066921
B. Yarman, S. Kılınç
In this paper, we introduced a new real frequency line segment technique (RF-LST) to assess the gain bandwidth limitation of double matching problems. The new method possesses all the outstanding features of the classical RF-LST, and it is the only practical tool available in the current literature to assess the gain-bandwidth limitations of double matching problems numerically. An example is presented to show the application of the newly proposed method. It is expected that the newly proposed RF-LST technique will be useful to assess the power and efficiency performance of interstage matching networks in designing single or multistage microwave amplifiers and communication systems such as transmitters, receivers phase array antenna systems, Electronic Warfare systems etc.
{"title":"A New Real Frequency Line Segment Technique to Assess the Gain Bandwidth Limitations for the Double Matching Problems","authors":"B. Yarman, S. Kılınç","doi":"10.1109/IMAS55807.2023.10066921","DOIUrl":"https://doi.org/10.1109/IMAS55807.2023.10066921","url":null,"abstract":"In this paper, we introduced a new real frequency line segment technique (RF-LST) to assess the gain bandwidth limitation of double matching problems. The new method possesses all the outstanding features of the classical RF-LST, and it is the only practical tool available in the current literature to assess the gain-bandwidth limitations of double matching problems numerically. An example is presented to show the application of the newly proposed method. It is expected that the newly proposed RF-LST technique will be useful to assess the power and efficiency performance of interstage matching networks in designing single or multistage microwave amplifiers and communication systems such as transmitters, receivers phase array antenna systems, Electronic Warfare systems etc.","PeriodicalId":246624,"journal":{"name":"2023 International Microwave and Antenna Symposium (IMAS)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121150697","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-07DOI: 10.1109/IMAS55807.2023.10066886
Rania Rabhi, Hamid Akbari-Chelaresi, M. Olaimat, A. Gharsallah, O. Ramahi
In this work, a wearable off-body antenna with very-low profile dimensions of $0.21lambda_{0} times 0.27lambda_{0} times 0.007lambda_{0}$, operating at 5.8 GHz, is proposed. This antenna is capable of working in both free space and on body. Thus, it has been characterized and fabricated for both scenarios. The gain, on-body efficiency, and bandwidth of the antenna are 4.4 $mathbf{dBi}$, 13.2%, and 42%, respectively, showing a better performance than its counterparts. Being low-profile, small, robust, easy-to-fabricate, efficient, fairly wideband, and low-cost, this antenna can be used in biomedical sensing applications. Also, owing to its unidirectional radiation pattern, this antenna can be used in off-body WBAN communication systems.
{"title":"Low-Profile off-Body Wearable Antenna for Biomedical Applications","authors":"Rania Rabhi, Hamid Akbari-Chelaresi, M. Olaimat, A. Gharsallah, O. Ramahi","doi":"10.1109/IMAS55807.2023.10066886","DOIUrl":"https://doi.org/10.1109/IMAS55807.2023.10066886","url":null,"abstract":"In this work, a wearable off-body antenna with very-low profile dimensions of $0.21lambda_{0} times 0.27lambda_{0} times 0.007lambda_{0}$, operating at 5.8 GHz, is proposed. This antenna is capable of working in both free space and on body. Thus, it has been characterized and fabricated for both scenarios. The gain, on-body efficiency, and bandwidth of the antenna are 4.4 $mathbf{dBi}$, 13.2%, and 42%, respectively, showing a better performance than its counterparts. Being low-profile, small, robust, easy-to-fabricate, efficient, fairly wideband, and low-cost, this antenna can be used in biomedical sensing applications. Also, owing to its unidirectional radiation pattern, this antenna can be used in off-body WBAN communication systems.","PeriodicalId":246624,"journal":{"name":"2023 International Microwave and Antenna Symposium (IMAS)","volume":"42 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134291424","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-07DOI: 10.1109/IMAS55807.2023.10066884
Maha Hesham Elfeshawy, Yasmine Zaghloul, H. Hammad
This work proposes a four-pole wideband bandpass filter using a single metallic cylindrical cavity. The filter employs quadruple-mode resonator by using simple symmetric pair of perturbation and 2 symmetric feeding lines are deployed to implement a quadruple mode resonator. Both, the pairs of perturbation and extended feeding line, work together with the mode to constitute a four-pole wide passband with a fractional bandwidth of 46% at the central frequency of 3.9 GHz. To prove the validity, the simple symmetric proposed bandpass filter is fabricated from Aluminum 7075 using CNC machining technology. Measured S-parameter frequency response have satisfactorily matched with the simulated results.
{"title":"Quadruple-Mode Wideband Bandpass Filter Using Symmetric Structure in Single Cylindrical Cavity","authors":"Maha Hesham Elfeshawy, Yasmine Zaghloul, H. Hammad","doi":"10.1109/IMAS55807.2023.10066884","DOIUrl":"https://doi.org/10.1109/IMAS55807.2023.10066884","url":null,"abstract":"This work proposes a four-pole wideband bandpass filter using a single metallic cylindrical cavity. The filter employs quadruple-mode resonator by using simple symmetric pair of perturbation and 2 symmetric feeding lines are deployed to implement a quadruple mode resonator. Both, the pairs of perturbation and extended feeding line, work together with the mode to constitute a four-pole wide passband with a fractional bandwidth of 46% at the central frequency of 3.9 GHz. To prove the validity, the simple symmetric proposed bandpass filter is fabricated from Aluminum 7075 using CNC machining technology. Measured S-parameter frequency response have satisfactorily matched with the simulated results.","PeriodicalId":246624,"journal":{"name":"2023 International Microwave and Antenna Symposium (IMAS)","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117280448","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-07DOI: 10.1109/IMAS55807.2023.10066890
Omar Wadah, I. Eshrah, Mohamed A. Moharram Hassan
A compact asymmetric orthomode transducer (OMT) for the characterization and measurements of dual polarized 5G communication systems is designed. The OMT is customly designed for the n260 (37 - 40 GHz) and n259 (39.5 - 43.5 GHz) bands. The OMT covers 20% fractional bandwidth (36 - 44 GHz) with a measured return loss and isolation better than 15 dB and 35 dB respectively. Good agreement between simulations and measurements is obtained.
{"title":"Design of a Compact Asymmetric Orthomode Transducer for 5G Applications","authors":"Omar Wadah, I. Eshrah, Mohamed A. Moharram Hassan","doi":"10.1109/IMAS55807.2023.10066890","DOIUrl":"https://doi.org/10.1109/IMAS55807.2023.10066890","url":null,"abstract":"A compact asymmetric orthomode transducer (OMT) for the characterization and measurements of dual polarized 5G communication systems is designed. The OMT is customly designed for the n260 (37 - 40 GHz) and n259 (39.5 - 43.5 GHz) bands. The OMT covers 20% fractional bandwidth (36 - 44 GHz) with a measured return loss and isolation better than 15 dB and 35 dB respectively. Good agreement between simulations and measurements is obtained.","PeriodicalId":246624,"journal":{"name":"2023 International Microwave and Antenna Symposium (IMAS)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125219729","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-07DOI: 10.1109/IMAS55807.2023.10066933
S. Mirjahanmardi, Saleh Ba Raean, Hamid Akbari-Chelaresi, V. Nayyeri, O. Ramahi
This work presents a new modality for human body imaging using low-frequency electromagnetic radiation and Radon Transforms. While the physics of electromagnetic energy transmission through human tissues is different from that of X-ray propagation in the same tissues, strong analogies exist between the two phenomena when the object to be imaged has dimensions significantly shorter than the wavelength. We demonstrate the validity of this modality using a simple but highly instructive numerical experiment involving an axially asymmetric body.
{"title":"Computerized Tomography with Low-Frequency Electromagnetic Radiation","authors":"S. Mirjahanmardi, Saleh Ba Raean, Hamid Akbari-Chelaresi, V. Nayyeri, O. Ramahi","doi":"10.1109/IMAS55807.2023.10066933","DOIUrl":"https://doi.org/10.1109/IMAS55807.2023.10066933","url":null,"abstract":"This work presents a new modality for human body imaging using low-frequency electromagnetic radiation and Radon Transforms. While the physics of electromagnetic energy transmission through human tissues is different from that of X-ray propagation in the same tissues, strong analogies exist between the two phenomena when the object to be imaged has dimensions significantly shorter than the wavelength. We demonstrate the validity of this modality using a simple but highly instructive numerical experiment involving an axially asymmetric body.","PeriodicalId":246624,"journal":{"name":"2023 International Microwave and Antenna Symposium (IMAS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128520073","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-07DOI: 10.1109/IMAS55807.2023.10066906
M. Terada
This paper attempts to present a survey on techniques for beam scanning with circularly-polarized reflector antennas, concentrating on the ones that keep each reflector antenna element focused, including a new technique previously introduced by the author [1]–[3]. High gain reflector antennas are of main concern in this work (≽ 50 dBi), and possible scanning techniques are reviewed in light of geometrical concepts in conjunction with phased array methodology and notions of interferometry. It is not claimed that the work represents the state-of-the-art in phase-shifting control, but it does explore concepts and geometries involving intrinsic properties of circularly-polarized reflector antennas, explained in a straightforward manner, highlighting the educational aspect of the contribution. The concepts herein discussed are a work in progress and only preliminary results are discussed to illustrate the proposed configurations, without loss of generality.
{"title":"Geometrical Concepts for Phase-Shifting in Circularly-Polarized Reflector Antennas","authors":"M. Terada","doi":"10.1109/IMAS55807.2023.10066906","DOIUrl":"https://doi.org/10.1109/IMAS55807.2023.10066906","url":null,"abstract":"This paper attempts to present a survey on techniques for beam scanning with circularly-polarized reflector antennas, concentrating on the ones that keep each reflector antenna element focused, including a new technique previously introduced by the author [1]–[3]. High gain reflector antennas are of main concern in this work (≽ 50 dBi), and possible scanning techniques are reviewed in light of geometrical concepts in conjunction with phased array methodology and notions of interferometry. It is not claimed that the work represents the state-of-the-art in phase-shifting control, but it does explore concepts and geometries involving intrinsic properties of circularly-polarized reflector antennas, explained in a straightforward manner, highlighting the educational aspect of the contribution. The concepts herein discussed are a work in progress and only preliminary results are discussed to illustrate the proposed configurations, without loss of generality.","PeriodicalId":246624,"journal":{"name":"2023 International Microwave and Antenna Symposium (IMAS)","volume":"214 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117339740","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-07DOI: 10.1109/IMAS55807.2023.10066940
R. M. Bilal, Z. Akhter, Nawaf Alsahli, Muhammad Abdel-Aal, A. Shamim
Technology integration has enabled value-added services and quality-of-life enhancement in almost all aspects of modern life. In this paper, we present a UAV and low-cost Bluetooth low energy (BLE) tags-based location search system which enables a cart take-home service for shoppers of a supermarket in a model smart colony. The presented system has quality-of-life enhancement as well as carbon footprint reduction effects and can be integrated with the existing security and/or transport system of the model smart colony. Conducted field trials on location accuracy of the system are also presented, showing that carts left by residents outside the home can be located within 6.58m and carts taken inside homes or buildings can be located within 16.43m.
{"title":"UAV Assisted IoT Geo-positioning Solution Employing Low-Cost Bluetooth Enabled Tags","authors":"R. M. Bilal, Z. Akhter, Nawaf Alsahli, Muhammad Abdel-Aal, A. Shamim","doi":"10.1109/IMAS55807.2023.10066940","DOIUrl":"https://doi.org/10.1109/IMAS55807.2023.10066940","url":null,"abstract":"Technology integration has enabled value-added services and quality-of-life enhancement in almost all aspects of modern life. In this paper, we present a UAV and low-cost Bluetooth low energy (BLE) tags-based location search system which enables a cart take-home service for shoppers of a supermarket in a model smart colony. The presented system has quality-of-life enhancement as well as carbon footprint reduction effects and can be integrated with the existing security and/or transport system of the model smart colony. Conducted field trials on location accuracy of the system are also presented, showing that carts left by residents outside the home can be located within 6.58m and carts taken inside homes or buildings can be located within 16.43m.","PeriodicalId":246624,"journal":{"name":"2023 International Microwave and Antenna Symposium (IMAS)","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132708896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-02-07DOI: 10.1109/IMAS55807.2023.10066896
Serene Abu-Sardanah, Jakob Loher, Yrina Guarisma, Daniela Dobre, Khilav Soni, O. Ramahi, G. Shaker
Accurate asset tracking and indoor localization (IL) is of interest in many applications including IoT sensing, shipping warehouse organization, and indoor navigation. Angle-based IL methods, such as angle-of-arrival (AOA), are known for their excellent accuracy. Moreover, their built-in support in the Bluetooth low energy (BLE) stack enables scalable and straight forward IL implementations. In this investigation, important considerations regarding the localization system parameters, including the number and location of anchor nodes, and tracked assets are explored.
{"title":"Experimental Investigation on the Performance of Angle-of-Arrival-based Asset Localization in a Warehouse","authors":"Serene Abu-Sardanah, Jakob Loher, Yrina Guarisma, Daniela Dobre, Khilav Soni, O. Ramahi, G. Shaker","doi":"10.1109/IMAS55807.2023.10066896","DOIUrl":"https://doi.org/10.1109/IMAS55807.2023.10066896","url":null,"abstract":"Accurate asset tracking and indoor localization (IL) is of interest in many applications including IoT sensing, shipping warehouse organization, and indoor navigation. Angle-based IL methods, such as angle-of-arrival (AOA), are known for their excellent accuracy. Moreover, their built-in support in the Bluetooth low energy (BLE) stack enables scalable and straight forward IL implementations. In this investigation, important considerations regarding the localization system parameters, including the number and location of anchor nodes, and tracked assets are explored.","PeriodicalId":246624,"journal":{"name":"2023 International Microwave and Antenna Symposium (IMAS)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134017548","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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