Advanced Radio Frequency Antennas for Modern Communication and Medical Systems最新文献

Wideband Wearable Antennas for 5G, IoT, and Medical Applications 用于5G、物联网和医疗应用的宽带可穿戴天线

Advanced Radio Frequency Antennas for Modern Communication and Medical Systems Pub Date : 2020-08-31 DOI: 10.5772/intechopen.93492

A. Sabban

{"title":"Wideband Wearable Antennas for 5G, IoT, and Medical Applications","authors":"A. Sabban","doi":"10.5772/intechopen.93492","DOIUrl":"https://doi.org/10.5772/intechopen.93492","url":null,"abstract":"Wearable compact antennas are a major part of every wearable 5G communication system, IoT, and biomedical systems. Several types of printed antennas are employed as wearable antennas. Printed dipole, microstrip antennas, printed loops, slot antennas, and PIFA antennas are employed as wearable antennas. Compact efficient antennas significantly affect the electrical performance of wearable communication systems. In several communication and medical systems, the polarization of the received signal is not known. The polarization of the received signal may be vertical, horizontal, or circular polarized. In these systems, it is crucial to use dual-polarized receiving antennas. The antennas presented in this chapter may be linearly or dually polarized. Design trade-offs, simulation results, and measured results on human body of small wideband printed antennas with high efficiency are presented in this chapter. For example, the low-volume dually polarized antenna dimensions are 50 (cid:1) 50 (cid:1) 0.5 mm. The antenna beamwidth is around 100°. The antennas gain is around 0 – 4 dBi. Metamaterial technology is used to improve the electrical performance of wearable antennas. The proposed antennas may be used in wearable wireless communication and medical RF systems. The antennas ’ electrical performance on human body is presented in this chapter.","PeriodicalId":323933,"journal":{"name":"Advanced Radio Frequency Antennas for Modern Communication and Medical Systems","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123544960","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}

引用次数: 5

Design of a UWB Coplanar Fed Antenna and Circular Miniature Printed Antenna for Medical Applications 医用超宽带共面馈电天线和圆形微型印刷天线的设计

Advanced Radio Frequency Antennas for Modern Communication and Medical Systems Pub Date : 2020-08-07 DOI: 10.5772/intechopen.93205

A. Latif

{"title":"Design of a UWB Coplanar Fed Antenna and Circular Miniature Printed Antenna for Medical Applications","authors":"A. Latif","doi":"10.5772/intechopen.93205","DOIUrl":"https://doi.org/10.5772/intechopen.93205","url":null,"abstract":"Breast cancer is the second deadly cancer for women; for more efficiency and an early detection, the biomedical field need new systems that should be safe, comfortable, and sensible. The medical field already has its methods to detect breast cancer. In this chapter, a new ultra-wide band (UWB) planar antenna is presented for microwave imaging, the antenna is designed to operate in a frequency band from 2.9-10.8GHz. The antenna was designed to be adaptable for multi-viewing imaging due to it simple form, low cost and ease to be manufactured. The simulation results of the new ultra large band antenna and a performance comparison with other UWB antennas. We also offer a circular miniature printed antenna that satisfies the UWB characteristics in terms of bandwidth and reflection coefficient. This antenna is intended for a system for detecting malignant tumors by microwave imaging. The antenna made has a patch on a FR-4 type substrate with εr = 4,3, thickness h =1.575 mm and dimensions ls = 25 mm, and ws = 25 mm. A rectangular slot is inserted on the radiating element ensuring its miniaturization. The latter is powered by a microstrip line width wm with matching impedance at 50 Ohm.","PeriodicalId":323933,"journal":{"name":"Advanced Radio Frequency Antennas for Modern Communication and Medical Systems","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117032700","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}

引用次数: 2

Beamforming Phased Array Antenna toward Indoor Positioning Applications 波束形成相控阵天线在室内定位中的应用

Advanced Radio Frequency Antennas for Modern Communication and Medical Systems Pub Date : 2020-08-04 DOI: 10.5772/intechopen.93133

Nguyen Thanh Huong

{"title":"Beamforming Phased Array Antenna toward Indoor Positioning Applications","authors":"Nguyen Thanh Huong","doi":"10.5772/intechopen.93133","DOIUrl":"https://doi.org/10.5772/intechopen.93133","url":null,"abstract":"Indoor positioning systems based on radio wave have drawn a lot of research interest over the last few decades. One of the positioning methods, Angle of Arrival, locating object based on the relative angle of object to the reference points, requires a directional antenna in order to improve the accuracy of indoor positioning system. From this situation, an eight-port phased array antenna using reflection type phase shifter is designed. The input power is split to each antenna through eight-port Wilkinson power divider with insertion loss of about 11 dB and isolation of about 20 dB. To extract more accurate position, the main beam of phased array antenna can be steered smoothly by a design 18 of a continuous and full 360° reflection type phase shifter with low insertion loss variation. Microstrip patch antennas are used as elements in phased array antenna. The steering of main beam is presented by radiation patterns of phased array antenna, measured in anechoic chamber from (cid:1) 45 to 45° with step 5°. The measurement result shows that the main beam direction is quite close to the desired direction in simulation. In most case, the side lobe level is less than the main lobe about 10 dB.","PeriodicalId":323933,"journal":{"name":"Advanced Radio Frequency Antennas for Modern Communication and Medical Systems","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130758667","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}

引用次数: 4

A Review to Massive MIMO Detection Algorithms: Theory and Implementation 大规模MIMO检测算法综述:理论与实现

Advanced Radio Frequency Antennas for Modern Communication and Medical Systems Pub Date : 2020-07-03 DOI: 10.5772/intechopen.93089

Bastien Trotobas, A. Nafkha, Y. Louét

{"title":"A Review to Massive MIMO Detection Algorithms: Theory and Implementation","authors":"Bastien Trotobas, A. Nafkha, Y. Louét","doi":"10.5772/intechopen.93089","DOIUrl":"https://doi.org/10.5772/intechopen.93089","url":null,"abstract":"Multiple-input multiple-output (MIMO) systems entered most major standards in the past decades, including IEEE 802.11n (Wi-Fi) and long-term evolution (LTE). Moreover, MIMO techniques will be used for 5G by increasing the number of antennas at the base station end. MIMO systems enable spatial multiplexing, which has the potential of increasing the capacity of the communication channel linearly with the minimum of the number of antennas installed at both sides without sacrificing any additional bandwidth or power. To handle the space-division multiplexing (SDM), receivers have to implement new algorithms to exploit the spatial information in order to distinguish the transmitted data streams. This chapter provides an overview of the most well-known and promising MIMO detectors, as well as some unusual-yet-interesting ones. We focus on the description of the different paradigms to highlight the different approaches that have been studied. For each paradigm, we describe the mathematical framework and give the underlying philosophy. When hardware implementations are available in the literature, we provide the results reported and give the according references.","PeriodicalId":323933,"journal":{"name":"Advanced Radio Frequency Antennas for Modern Communication and Medical Systems","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130755338","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}

引用次数: 9

Phased Antenna Arrays toward 5G 面向5G的相控天线阵列

Advanced Radio Frequency Antennas for Modern Communication and Medical Systems Pub Date : 2020-06-24 DOI: 10.5772/intechopen.93058

Tran Cao Quyen

引用次数: 2

A Novel Class of Super-Elliptical Vivaldi Antennas for Ultra-Wideband Applications 一类用于超宽带应用的超椭圆维瓦尔第天线

Advanced Radio Frequency Antennas for Modern Communication and Medical Systems Pub Date : 2020-05-07 DOI: 10.5772/intechopen.92325

A. Loutridis, Simay Kazıcı, O. Stukach, A. Mirmanov, D. Caratelli

引用次数: 2

Time Modulated Linear Array (TMLA) Design 时间调制线性阵列(TMLA)设计

Advanced Radio Frequency Antennas for Modern Communication and Medical Systems Pub Date : 2020-04-16 DOI: 10.5772/intechopen.92100

O. Gassab, A. Azrar, Sara Bouguerra

引用次数: 1