Pub Date : 2019-10-01DOI: 10.1109/MMS48040.2019.9157327
Chiraz Ben Nsir, J. Ribero, C. Boussetta, A. Gharsallah
This paper presents the design and analysis of Koch fractal antenna with transparent substrate for telecommunication systems. This wide band antenna is capable to cover GSM900 (890–960 MHz), GSM1800 (1710-1880 MHz), GSM1900 (1850–1990 MHz), UMTS (1920–2170 MHz), WLAN (2400–2480 MHz) and LTE (2.6-2.7 GHz) bands with VSWR < 2 over the entire frequency range. The antenna consists of a Koch fractal antenna developed according to the second iteration of the Koch snowflake fractal structure with slot inside. The antenna is fed by coplanar wave guide (CPW) using the concept of modified ground structure. The proposed antenna is designed on a transparent substrate with a dielectric constant of 4.6 and a size of 60 ⨯ 70 ⨯ 3 mm3. The radiating element and ground plane are both designed using AgHT-4, while the substrate is made of glass. The gain of the proposed antenna is 1.69dB, 2.92dB at 1.9 GHz and 2.4 GHz respectively, which correspond to the needs of our application. The analysis of antenna is performed using HFSS software.
{"title":"A Wide Band Transparent Koch Snowflake Fractal Antenna Design for Telecommunication Applications","authors":"Chiraz Ben Nsir, J. Ribero, C. Boussetta, A. Gharsallah","doi":"10.1109/MMS48040.2019.9157327","DOIUrl":"https://doi.org/10.1109/MMS48040.2019.9157327","url":null,"abstract":"This paper presents the design and analysis of Koch fractal antenna with transparent substrate for telecommunication systems. This wide band antenna is capable to cover GSM900 (890–960 MHz), GSM1800 (1710-1880 MHz), GSM1900 (1850–1990 MHz), UMTS (1920–2170 MHz), WLAN (2400–2480 MHz) and LTE (2.6-2.7 GHz) bands with VSWR < 2 over the entire frequency range. The antenna consists of a Koch fractal antenna developed according to the second iteration of the Koch snowflake fractal structure with slot inside. The antenna is fed by coplanar wave guide (CPW) using the concept of modified ground structure. The proposed antenna is designed on a transparent substrate with a dielectric constant of 4.6 and a size of 60 ⨯ 70 ⨯ 3 mm3. The radiating element and ground plane are both designed using AgHT-4, while the substrate is made of glass. The gain of the proposed antenna is 1.69dB, 2.92dB at 1.9 GHz and 2.4 GHz respectively, which correspond to the needs of our application. The analysis of antenna is performed using HFSS software.","PeriodicalId":373813,"journal":{"name":"2019 IEEE 19th Mediterranean Microwave Symposium (MMS)","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115174004","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 : 2019-10-01DOI: 10.1109/mms48040.2019.9157273
R. Aldhaheri, I. S. Alruhaili
A new and simple ultra wide band (UWB) antenna fed by a coplanar waveguide (CPW) with notched bands at 5.8 GHz is presented in this paper. The physical dimension of this antenna is 17.5 ⨯ 17.5 mm2 which is considered as one of the smallest UWB antennas with band notched characteristics in the literature. The notched frequency band is created by cutting an elliptical slot of radii $a$ and $b$ and inserting a resonator stub in the radiating patch. The lengths of these radii and stub are used to adjust the centre notched frequency and the rejection band. The fabricated antenna has a broad bandwidth ranging from 3 to 15.2 GHz (based on return loss < −10 dB) with controllable notched band for WLAN applications. The experimental radiation patters are nearly omnidirectional and stable over the entire operating bandwidth in the H-plane and nearly bidirectional with two nulls in the E-plane. The very compact size and the good electromagnetic property of this proposed antenna makes it a good candidate to be integrated into portable devices for UWB systems.
{"title":"A Simple and Compact CPW-Fed UWB Antenna with WLAN Band Rejection","authors":"R. Aldhaheri, I. S. Alruhaili","doi":"10.1109/mms48040.2019.9157273","DOIUrl":"https://doi.org/10.1109/mms48040.2019.9157273","url":null,"abstract":"A new and simple ultra wide band (UWB) antenna fed by a coplanar waveguide (CPW) with notched bands at 5.8 GHz is presented in this paper. The physical dimension of this antenna is 17.5 ⨯ 17.5 mm2 which is considered as one of the smallest UWB antennas with band notched characteristics in the literature. The notched frequency band is created by cutting an elliptical slot of radii $a$ and $b$ and inserting a resonator stub in the radiating patch. The lengths of these radii and stub are used to adjust the centre notched frequency and the rejection band. The fabricated antenna has a broad bandwidth ranging from 3 to 15.2 GHz (based on return loss < −10 dB) with controllable notched band for WLAN applications. The experimental radiation patters are nearly omnidirectional and stable over the entire operating bandwidth in the H-plane and nearly bidirectional with two nulls in the E-plane. The very compact size and the good electromagnetic property of this proposed antenna makes it a good candidate to be integrated into portable devices for UWB systems.","PeriodicalId":373813,"journal":{"name":"2019 IEEE 19th Mediterranean Microwave Symposium (MMS)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125205745","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}
Transistor selection and power drive ratio considerations are critical in high power amplifier design. This work reports four high power amplifier MMICs operating at X-band, discusses two-stage and three-stage design approaches for various output power and efficiency goals while investigating the trade-off between them. All of the four MMICs are fabricated using NANOTAM's 0.25 μm GaN on SiC technology and measured on-wafer. Experimental results show that the first pair of power amplifiers with drive ratios of 1:4 achieve an output power of 13.2-16 W with power-added efficiency between 36.6-46.8%, while the second group of power amplifiers which have more conservative drive ratios of 2:4 are capable of higher output power between 14-18.1 W with lower power-added efficiency of 32.5-38.2 %, all recorded at 6 dB gain compression.
晶体管选择和功率驱动比的考虑是高功率放大器设计的关键。本研究报告了在x波段工作的四种高功率放大器mmic，讨论了针对各种输出功率和效率目标的两级和三级设计方法，同时研究了它们之间的权衡。这四款mmic均采用NANOTAM的0.25 μm GaN on SiC技术制造，并在晶圆上进行测量。实验结果表明，第一组驱动比为1:4的功率放大器输出功率为13.2 ~ 16w，附加功率效率为36.6% ~ 46.8%;第二组驱动比为2:4的功率放大器输出功率较高，输出功率为14 ~ 18.1 W，附加功率效率较低，为32.5 ~ 38.2%，均为6db增益压缩。
{"title":"Design and Topology Considerations for a Family of X-Band GaN Power Amplifier MMICs","authors":"Ulas Ozipek, Armagan Gurdal, Batuhan Sutbas, Büşra Çankaya Akoğlu, E. Ozbay","doi":"10.1109/mms48040.2019.9157315","DOIUrl":"https://doi.org/10.1109/mms48040.2019.9157315","url":null,"abstract":"Transistor selection and power drive ratio considerations are critical in high power amplifier design. This work reports four high power amplifier MMICs operating at X-band, discusses two-stage and three-stage design approaches for various output power and efficiency goals while investigating the trade-off between them. All of the four MMICs are fabricated using NANOTAM's 0.25 μm GaN on SiC technology and measured on-wafer. Experimental results show that the first pair of power amplifiers with drive ratios of 1:4 achieve an output power of 13.2-16 W with power-added efficiency between 36.6-46.8%, while the second group of power amplifiers which have more conservative drive ratios of 2:4 are capable of higher output power between 14-18.1 W with lower power-added efficiency of 32.5-38.2 %, all recorded at 6 dB gain compression.","PeriodicalId":373813,"journal":{"name":"2019 IEEE 19th Mediterranean Microwave Symposium (MMS)","volume":"146 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123358549","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 : 2019-10-01DOI: 10.1109/mms48040.2019.9157323
A. M. E. Abounemra, M. Helaoui, F. Ghannouchi
This paper presents a C-band monolithic microwave integrated circuit (MMIC) low noise amplifiers (LNA) designed utilizing 0.25 um AlGaN/GaN HEMT technology. The single-stage amplifier is designed based on Common-Source topology with series inductive source and R-C feedback network. The post-layout simulation results demonstrate that the noise figure is around 1.4 dB at the operating frequency 5.4 GHz dB and better than 2 dB across frequency band from 4.6 to 6.6 GHz. The saturated output power of this LNA 28 dBm with higher efficiency around 40 %. The LNA has an output P1 dB and OIP3 of 22 dBm and 35 dBm, respectively, which illustrated high linear performance and can survive with high input power overdrive up to 28-dBm CW input power. The full chip size is 1.5 mm ⨯ 1.7 mm.
{"title":"A Highly Survivable C-band GaN HEMT LNA with Resistive Feedback Technique","authors":"A. M. E. Abounemra, M. Helaoui, F. Ghannouchi","doi":"10.1109/mms48040.2019.9157323","DOIUrl":"https://doi.org/10.1109/mms48040.2019.9157323","url":null,"abstract":"This paper presents a C-band monolithic microwave integrated circuit (MMIC) low noise amplifiers (LNA) designed utilizing 0.25 um AlGaN/GaN HEMT technology. The single-stage amplifier is designed based on Common-Source topology with series inductive source and R-C feedback network. The post-layout simulation results demonstrate that the noise figure is around 1.4 dB at the operating frequency 5.4 GHz dB and better than 2 dB across frequency band from 4.6 to 6.6 GHz. The saturated output power of this LNA 28 dBm with higher efficiency around 40 %. The LNA has an output P1 dB and OIP3 of 22 dBm and 35 dBm, respectively, which illustrated high linear performance and can survive with high input power overdrive up to 28-dBm CW input power. The full chip size is 1.5 mm ⨯ 1.7 mm.","PeriodicalId":373813,"journal":{"name":"2019 IEEE 19th Mediterranean Microwave Symposium (MMS)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115967315","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 : 2019-10-01DOI: 10.1109/mms48040.2019.9157261
A. Khaled, D. Omri, T. Aguili
This paper presents a novel algorithm for analyzing transient radiation from an arbitrary shape illuminated by an incident electromagnetic wave. The algorithm is based on spatiotemporal Integral Equation (Electric Field Integral Equation) to predict the transient response of the antenna. The Laguerre functions are used as temporal basis. In order to simplify the space modeling, we reformulate the space basis RWG. This basis is expressed in polar coordinate that defines by pairs of adjacent triangular. The later presents the analyzed sub-domain characterized by their triangle's centroid. Numerical results that validate and demonstrate the efficacy of the proposed algorithm are presented.
{"title":"Resolution of 2D Scattering Problem Using Method of Moment and RWG Functions","authors":"A. Khaled, D. Omri, T. Aguili","doi":"10.1109/mms48040.2019.9157261","DOIUrl":"https://doi.org/10.1109/mms48040.2019.9157261","url":null,"abstract":"This paper presents a novel algorithm for analyzing transient radiation from an arbitrary shape illuminated by an incident electromagnetic wave. The algorithm is based on spatiotemporal Integral Equation (Electric Field Integral Equation) to predict the transient response of the antenna. The Laguerre functions are used as temporal basis. In order to simplify the space modeling, we reformulate the space basis RWG. This basis is expressed in polar coordinate that defines by pairs of adjacent triangular. The later presents the analyzed sub-domain characterized by their triangle's centroid. Numerical results that validate and demonstrate the efficacy of the proposed algorithm are presented.","PeriodicalId":373813,"journal":{"name":"2019 IEEE 19th Mediterranean Microwave Symposium (MMS)","volume":"218 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134429589","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 : 2019-10-01DOI: 10.1109/mms48040.2019.9157278
Wissem El May, I. Sfar, J. Ribero, L. Osman
This paper describes the antenna performances made from common clothing fabrics for 5G and Internet of Things (IoT) applications by employing electromagnetic bandgap (EBG) structures as the substrate of the antenna for gain enhancement in millimeter-wave frequency. A suspended transmission line method has been taken into account for the characterization of the EBG structure to obtain the optimum design. Furthermore, the optimum unit cell, which is loaded onto the antenna, is easy to implement and allows obtaining a Peak Gain of 9.79 dBi in 26 GHz band.
{"title":"A millimeter-wave textile antenna loaded with EBG structures for 5G and IoT applications","authors":"Wissem El May, I. Sfar, J. Ribero, L. Osman","doi":"10.1109/mms48040.2019.9157278","DOIUrl":"https://doi.org/10.1109/mms48040.2019.9157278","url":null,"abstract":"This paper describes the antenna performances made from common clothing fabrics for 5G and Internet of Things (IoT) applications by employing electromagnetic bandgap (EBG) structures as the substrate of the antenna for gain enhancement in millimeter-wave frequency. A suspended transmission line method has been taken into account for the characterization of the EBG structure to obtain the optimum design. Furthermore, the optimum unit cell, which is loaded onto the antenna, is easy to implement and allows obtaining a Peak Gain of 9.79 dBi in 26 GHz band.","PeriodicalId":373813,"journal":{"name":"2019 IEEE 19th Mediterranean Microwave Symposium (MMS)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132977552","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 : 2019-10-01DOI: 10.1109/mms48040.2019.9157248
Büşra Çankaya Akoğlu, Batuhan Sutbas, O. Cengiz, E. Ozbay
This work presents the design and implementation of two power amplifiers along with a driver amplifier based on our in-house microstrip 0.25 μm GaN on SiC technology. Details of the fabrication technology, typical transistor performance, MMIC design procedure, and measurement results of the fabricated chips are provided. The presented amplifier chain is planned to be used in an X-band transceiver module. The compact size driver amplifier demonstrates at least 25 dB gain and has a minimum of 23 dBm output power at 1 dB gain compression, which is sufficient to drive the power amplifier MMICs comfortably. For the power amplifiers, two design approaches are taken. The first design provides a maximum output power of 20 W with 27 dB power gain at the center frequency of 10 GHz, while the second one is optimized for flatter small-signal and large-signal responses. The second power amplifier achieves at least 17.6 W across the desired band with a minimum of 33% power-added efficiency and also provides 35.2 dB small-signal gain with a considerably low gain ripple of 0.8 dB. The complete amplifier chain is expected to demonstrate a high gain and high output power density with low ripple at 85°C operating temperature.
本文介绍了基于我们内部0.25 μm GaN on SiC微带技术的两个功率放大器和一个驱动放大器的设计和实现。详细介绍了该芯片的制造工艺、典型晶体管性能、MMIC设计过程和测试结果。提出的放大器链计划用于x波段收发模块。紧凑尺寸的驱动放大器具有至少25 dB的增益，并且在1 dB增益压缩时具有至少23 dBm的输出功率，足以舒适地驱动功率放大器mmic。对于功率放大器，采用了两种设计方法。第一种设计在中心频率为10 GHz时提供20 W的最大输出功率和27 dB的功率增益，而第二种设计则针对更平坦的小信号和大信号响应进行了优化。第二个功率放大器在期望的频带上实现至少17.6 W，功率增加效率至少为33%，还提供35.2 dB小信号增益，增益纹波相当低，为0.8 dB。整个放大器链有望在85°C工作温度下表现出高增益和低纹波的高输出功率密度。
{"title":"GaN based Driver and Power Amplifier MMICs for X-Band Transceiver Modules","authors":"Büşra Çankaya Akoğlu, Batuhan Sutbas, O. Cengiz, E. Ozbay","doi":"10.1109/mms48040.2019.9157248","DOIUrl":"https://doi.org/10.1109/mms48040.2019.9157248","url":null,"abstract":"This work presents the design and implementation of two power amplifiers along with a driver amplifier based on our in-house microstrip 0.25 μm GaN on SiC technology. Details of the fabrication technology, typical transistor performance, MMIC design procedure, and measurement results of the fabricated chips are provided. The presented amplifier chain is planned to be used in an X-band transceiver module. The compact size driver amplifier demonstrates at least 25 dB gain and has a minimum of 23 dBm output power at 1 dB gain compression, which is sufficient to drive the power amplifier MMICs comfortably. For the power amplifiers, two design approaches are taken. The first design provides a maximum output power of 20 W with 27 dB power gain at the center frequency of 10 GHz, while the second one is optimized for flatter small-signal and large-signal responses. The second power amplifier achieves at least 17.6 W across the desired band with a minimum of 33% power-added efficiency and also provides 35.2 dB small-signal gain with a considerably low gain ripple of 0.8 dB. The complete amplifier chain is expected to demonstrate a high gain and high output power density with low ripple at 85°C operating temperature.","PeriodicalId":373813,"journal":{"name":"2019 IEEE 19th Mediterranean Microwave Symposium (MMS)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114434531","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 : 2019-10-01DOI: 10.1109/MMS48040.2019.9157299
Ines Bouzayene, K. Mabrouk, A. Gharsallah, D. Kholodnyak
Drones are becoming more and more available to the general public for leisure activities and exploited in commercial applications, this boom in drone use has contributed to the emergence of new threats in security applications. Because of their great agility and small size, UAV can be used for numerous missions and are very challenging to detect. Radar technology with its all-weather capability can play an important role in detecting UAV-based threats and in protecting critical assets, but standard radar is ill-prepared for UAV detection: UAVs are low-velocity aircraft with a very weak radar. A radar simulation is discussed and preliminary results are presented. In general, an X-band radar with electronic scanning capability can contribute to a reliable and affordable solution for detecting UAV threats. Radar could be the technology of choice for detecting the drone, signature.
{"title":"Scan Radar Using an Uniform Rectangular Array for Drone Detection with Low RCS","authors":"Ines Bouzayene, K. Mabrouk, A. Gharsallah, D. Kholodnyak","doi":"10.1109/MMS48040.2019.9157299","DOIUrl":"https://doi.org/10.1109/MMS48040.2019.9157299","url":null,"abstract":"Drones are becoming more and more available to the general public for leisure activities and exploited in commercial applications, this boom in drone use has contributed to the emergence of new threats in security applications. Because of their great agility and small size, UAV can be used for numerous missions and are very challenging to detect. Radar technology with its all-weather capability can play an important role in detecting UAV-based threats and in protecting critical assets, but standard radar is ill-prepared for UAV detection: UAVs are low-velocity aircraft with a very weak radar. A radar simulation is discussed and preliminary results are presented. In general, an X-band radar with electronic scanning capability can contribute to a reliable and affordable solution for detecting UAV threats. Radar could be the technology of choice for detecting the drone, signature.","PeriodicalId":373813,"journal":{"name":"2019 IEEE 19th Mediterranean Microwave Symposium (MMS)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115067647","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 : 2019-10-01DOI: 10.1109/mms48040.2019.9157252
N. Dakhli, F. Choubani
A coplanar waveguide (CPW) planar inverted-L antenna (PILA) is proposed. It uses a Composite Right/Left Handed (CRLH) transmisssion line metamaterial loading in order to achieve a dual band operation. It is shown that this unit cell produces a new resonant mode at 1.8 GHz plus the folded monopole mode at 3.5 GHz. The associated −10 dB bandwidth fractions around each of these frequencies are 9.2% and 22.9%, while the corresponding peak gains and radiation efficiencies are −2.6 dBi (51.64%) and 2.59 dBi (93.8%), respectively. The radiator has a total size of $55times 54.5times 1.6 text{mm}^{3}$ or $0.33lambdatimes 0.32lambdatimes 0.009lambda$ at 1.8 GHz.
{"title":"Dual Band Metamaterial Inverted-L Antenna","authors":"N. Dakhli, F. Choubani","doi":"10.1109/mms48040.2019.9157252","DOIUrl":"https://doi.org/10.1109/mms48040.2019.9157252","url":null,"abstract":"A coplanar waveguide (CPW) planar inverted-L antenna (PILA) is proposed. It uses a Composite Right/Left Handed (CRLH) transmisssion line metamaterial loading in order to achieve a dual band operation. It is shown that this unit cell produces a new resonant mode at 1.8 GHz plus the folded monopole mode at 3.5 GHz. The associated −10 dB bandwidth fractions around each of these frequencies are 9.2% and 22.9%, while the corresponding peak gains and radiation efficiencies are −2.6 dBi (51.64%) and 2.59 dBi (93.8%), respectively. The radiator has a total size of $55times 54.5times 1.6 text{mm}^{3}$ or $0.33lambdatimes 0.32lambdatimes 0.009lambda$ at 1.8 GHz.","PeriodicalId":373813,"journal":{"name":"2019 IEEE 19th Mediterranean Microwave Symposium (MMS)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117067050","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 : 2019-10-01DOI: 10.1109/mms48040.2019.9157300
Sirine Rabah, A. Zaier, H. Dahman
Internet of Things (IoT) is a new paradigm pulling great interest in the modern wireless Communications domain. However, in some scenarios, the performance of IoT network is limited by energy constrained devices. For improve the energy efficiency of IoT network, researchers have suggested different approaches based on clustering, where the cluster heads (CHs) selection has significant effect on the network performance. In this paper, we review and compare different energy-efficient clustering protocols for IoT network, i.e Low-Energy Adaptive Clustering Hierarchy $(LEACH)$, Particle Swarm Optimization $(PSO)$ and Genetic Algorithms $(GA)$. Besides we investigate the extent of their effectiveness to prolong network lifetime. The results obtained from the implementation in MATLAB show that GA performs better than PSO and LEACH in improving energy consumption and also increasing the number of live nodes within different rounds.
{"title":"On Evaluating Energy Efficient Algorithms for Internet of Things Networks","authors":"Sirine Rabah, A. Zaier, H. Dahman","doi":"10.1109/mms48040.2019.9157300","DOIUrl":"https://doi.org/10.1109/mms48040.2019.9157300","url":null,"abstract":"Internet of Things (IoT) is a new paradigm pulling great interest in the modern wireless Communications domain. However, in some scenarios, the performance of IoT network is limited by energy constrained devices. For improve the energy efficiency of IoT network, researchers have suggested different approaches based on clustering, where the cluster heads (CHs) selection has significant effect on the network performance. In this paper, we review and compare different energy-efficient clustering protocols for IoT network, i.e Low-Energy Adaptive Clustering Hierarchy $(LEACH)$, Particle Swarm Optimization $(PSO)$ and Genetic Algorithms $(GA)$. Besides we investigate the extent of their effectiveness to prolong network lifetime. The results obtained from the implementation in MATLAB show that GA performs better than PSO and LEACH in improving energy consumption and also increasing the number of live nodes within different rounds.","PeriodicalId":373813,"journal":{"name":"2019 IEEE 19th Mediterranean Microwave Symposium (MMS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128736118","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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