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Design and experimental wideband hexagonal slot array patch antenna 宽带六角形槽阵贴片天线的设计与实验
The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011 Pub Date : 2011-05-17 DOI: 10.1109/ECTICON.2011.5947806
S. Pimpol
{"title":"Design and experimental wideband hexagonal slot array patch antenna","authors":"S. Pimpol","doi":"10.1109/ECTICON.2011.5947806","DOIUrl":"https://doi.org/10.1109/ECTICON.2011.5947806","url":null,"abstract":"This paper presents the design and experimental of a broadband coplanar waveguide (CPW)-fed hexagonal slot array patch antenna. The results of the return loss (S11), gain and radiation pattern of the proposed antenna have been simulated by using antenna analysis software IE3D program. The transmission line and ground plane have been designed to be on the same plane with antenna slot to be applicable for wideband operation. It is found that the proposed antenna is accessible to bandwidth about 107.69 %, a very large bandwidth comparing with conventional microstrip antennas, which mostly 1–5 % bandwidth. Measured maximum gains were approximately 4.11 dBi, 4.61 dBi for 2.45 GHz, 3.1 GHz band, respectively. The proposed antenna can be used for many wireless systems such as GSM1800, GSM1900, IMT-2000 and WLAN. Finally, simulation and measurement results for the design example are presented and a conclusion follows.","PeriodicalId":123701,"journal":{"name":"The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128143739","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: 7
Portable electronic nose for beverage quality assessment 饮料质量评定用便携式电子鼻
The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011 Pub Date : 2011-05-17 DOI: 10.1109/ECTICON.2011.5947797
P. Lorwongtragool, C. Wongchoosuk, T. Kerdcharoen
{"title":"Portable electronic nose for beverage quality assessment","authors":"P. Lorwongtragool, C. Wongchoosuk, T. Kerdcharoen","doi":"10.1109/ECTICON.2011.5947797","DOIUrl":"https://doi.org/10.1109/ECTICON.2011.5947797","url":null,"abstract":"A portable electronic nose (e-nose) was appropriately designed for investigating quality of beverages such as juice or wine, etc. The e-nose system comprises of sample and reference containers, air flow unit, sensing unit and data acquisition unit. All of the hardware units were controlled by in-house software under LABVIEW program via USB port of a DAQ card. The sensing unit includes eight different metal oxide gas sensors from Figaro Engineering Inc. Principal component analysis (PCA) was used as a statistical method in order to discriminate and assess the experimental data as defined by the percentage change in sensor resistances that correlates directly to difference in the aroma characteristics. Drift compensation model was applied to the raw data that sometimes suffer from the effects of sensor drift. Constructed portable e-nose has been tested on-field in a winery to evaluate wine aroma during process of wine bottling. The e-nose using PCA algorithm can distinguish the wine bottling under nitrogen from the bottling under partial vacuum. We also demonstrated that e-nose can be used to help wine maker to design the appropriate process of wine bottling achieving a high quality of wine product.","PeriodicalId":123701,"journal":{"name":"The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122161331","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: 6
Study of CPW-fed slot antennas with fractal stubs 分形存根的cpw馈电槽天线研究
The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011 Pub Date : 2011-05-17 DOI: 10.1109/ECTICON.2011.5947804
Tanan Hongnara, C. Mahatthanajatuphat, P. Akkaraekthalin
{"title":"Study of CPW-fed slot antennas with fractal stubs","authors":"Tanan Hongnara, C. Mahatthanajatuphat, P. Akkaraekthalin","doi":"10.1109/ECTICON.2011.5947804","DOIUrl":"https://doi.org/10.1109/ECTICON.2011.5947804","url":null,"abstract":"This paper studies CPW-fed slot antennas with fractal stubs. The S11 bandwidth of the antenna is affected by the fractal stub. It has been found that the antenna bandwidth will decrease when the iteration of fractal stub increases, which it will be opposite to the conventional fractal structures. In this study, fractal models with the 0, 1st, and 2nd iterations have been employed, resulting in the S11 bandwidths to be 121%, 115%, and 82%, respectively. Moreover, the radiation patterns of the presented antenna are still bi-directions and the average gains of antenna are above 2 dBi for all of fractal stub iterations. Results indicate an impedance bandwidth covering the band for 3G, WLAN, and WiMAX.","PeriodicalId":123701,"journal":{"name":"The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126354429","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: 6
Optimal allocation of SVC to enhance Total Transfer Capability using Hybrid Genetics Algorithm and Sequential Quadratic Programming 基于混合遗传算法和序列二次规划的SVC优化分配提高总传输能力
The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011 Pub Date : 2011-05-17 DOI: 10.1109/ECTICON.2011.5947976
Farzad Khandani, S. Soleymani, B. Mozafari
{"title":"Optimal allocation of SVC to enhance Total Transfer Capability using Hybrid Genetics Algorithm and Sequential Quadratic Programming","authors":"Farzad Khandani, S. Soleymani, B. Mozafari","doi":"10.1109/ECTICON.2011.5947976","DOIUrl":"https://doi.org/10.1109/ECTICON.2011.5947976","url":null,"abstract":"This paper concentrates on studying the effects of SVC controller on Total Transfer Capability (TTC) of power transactions between source and sink areas using Hybrid Genetic Algorithm-Sequential Quadratic Programming (GA-SQP). GA-SQP is a novel algorithm in power systems. The proposed algorithm is used to determine optimal placement of SVC controller and solving optimal power flow (OPF) to enhance TTC simultaneously. The proposed OPF is used to evaluate feasible TTC value within real and reactive power generation limits, line thermal limits, voltage limits and SVC operation limits. A 5 bus test system is used to demonstrate the effectiveness of the GA-SQP algorithm to enhance the TTC of the system. The results clearly indicate that introduction of SVC with proper parameters and location could enhance TTC.","PeriodicalId":123701,"journal":{"name":"The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123057305","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
Position-based routing protocol by reducing routing overhead with adaptive request zone for mobile ad hoc networks 基于位置的路由协议，通过自适应请求区域减少了移动自组织网络的路由开销
The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011 Pub Date : 2011-05-17 DOI: 10.1109/ECTICON.2011.5947856
S. Thipchaksurat, P. Kirdpipat
{"title":"Position-based routing protocol by reducing routing overhead with adaptive request zone for mobile ad hoc networks","authors":"S. Thipchaksurat, P. Kirdpipat","doi":"10.1109/ECTICON.2011.5947856","DOIUrl":"https://doi.org/10.1109/ECTICON.2011.5947856","url":null,"abstract":"In Mobile Ad Hoc Network (MANET), many routing protocols have been proposed to find the route from source node to the destination node. However, the process for discovering the route may increase the routing overhead. In this paper, we improve our previous scheme to reduces routing overhead with adaptive request zone which is called Adaptive Request Zone for Ad Hoc On-Demand Distance Vector (ARZAODV). In ARZAODV, we consider that the request zone may not be fixed but it can be chosen adaptively depending on the variation of distance between source node and destination node because those nodes may change the position. We evaluate the performance of ARZAODV by means of the simulation using NS-2. The performance metrics are packet delivery fraction and routing overhead. Our simulation results are compared with our previous scheme called Modified Ad Hoc On-Demand Distance (MAODV) and the traditional Ad Hoc On-Demand Distance Vector (AODV). The results show that ARZAODV can provide not only reducing the routing overhead and also increasing the packet delivery fraction comparing with MAODV and AODV.","PeriodicalId":123701,"journal":{"name":"The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123673528","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: 11
Impact of Grid-Connected Photovoltaic System on total system losses with consideration of capacitor bank setting using Genetic algorithm 基于遗传算法考虑电容器组设置的光伏并网系统对系统总损耗的影响
The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011 Pub Date : 2011-05-17 DOI: 10.1109/ECTICON.2011.5947982
S. Kongtonpisan, S. Chaitusaney
{"title":"Impact of Grid-Connected Photovoltaic System on total system losses with consideration of capacitor bank setting using Genetic algorithm","authors":"S. Kongtonpisan, S. Chaitusaney","doi":"10.1109/ECTICON.2011.5947982","DOIUrl":"https://doi.org/10.1109/ECTICON.2011.5947982","url":null,"abstract":"Distribution system has the highest total system losses. There are many methods to reduce the total system losses. Installing Distributed Generator (DG) such as Grid-Connected Photovoltaic System (GCPV) is one of the most efficient methods. However, it is too complicated because there are many related variables. A suitable optimization technique is Genetic algorithm which can be applied to complicated problems and combined with encoding, reproduction, crossover and mutation. This paper proposes the impact of Grid Connected Photovoltaic System on total system losses with setting capacitor bank using genetic algorithm. The proposed method is tested with a 54-bus Thailand test system in Matlab-Simulink.","PeriodicalId":123701,"journal":{"name":"The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129502412","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: 1
Low-cost self-oscillating electronic ballast for T5 fluorescent lamp integrated with HPF Class-DE resonant rectifier T5荧光灯低成本自振荡电子镇流器集成高功率de类谐振整流器
The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011 Pub Date : 2011-05-17 DOI: 10.1109/ECTICON.2011.5947954
C. Ekkaravarodome, K. Jirasereeamornkul
{"title":"Low-cost self-oscillating electronic ballast for T5 fluorescent lamp integrated with HPF Class-DE resonant rectifier","authors":"C. Ekkaravarodome, K. Jirasereeamornkul","doi":"10.1109/ECTICON.2011.5947954","DOIUrl":"https://doi.org/10.1109/ECTICON.2011.5947954","url":null,"abstract":"This paper presented the low-cost self-oscillating electronic ballast with a broken filament automatic shutdown for T5/28W fluorescent lamp based on high-power-factor Class-DE resonant rectifier, which are very attractive in term of commercial production. The power-factor-correction is achieved by using a bridge rectifier which acts as the Class-DE rectifier with Class-D resonant inverter. By using this topology the conduction angle of the diode can be increased then the low line current harmonic, high-power-factor was obtained. The switching frequency is about 50 kHz. Simulation results verify the theoretical analysis.","PeriodicalId":123701,"journal":{"name":"The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126916989","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: 0
UHF-RFID tag antenna using diamond structure and rectangular loop 超高频rfid标签天线采用菱形结构和矩形环路
The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011 Pub Date : 2011-05-17 DOI: 10.1109/ECTICON.2011.5947812
T. Pumpoung, C. Phongcharoenpanich, S. Kosulvit
{"title":"UHF-RFID tag antenna using diamond structure and rectangular loop","authors":"T. Pumpoung, C. Phongcharoenpanich, S. Kosulvit","doi":"10.1109/ECTICON.2011.5947812","DOIUrl":"https://doi.org/10.1109/ECTICON.2011.5947812","url":null,"abstract":"This paper proposes the UHF RFID tag antenna design for operation of the frequency band 920–925 MHz corresponding to the standard of UHF RFID in Thailand. The tag antenna fabrication from the thin FR4 substrate (εr = 4.3) with the thickness of substrate of 0.25 mm. The pattern of the tag antenna is omni-directional one. The tag antenna design is used rectangular loop matching technique for matching between the tag antennas with IC chip with the impedance of 21.29-j191.7 Ω at the frequency of 922.5 MHz that is the center frequency. The meander line structure can be decrease the size of tag antenna to compact size.","PeriodicalId":123701,"journal":{"name":"The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131421686","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: 1
Phase/amplitude shift keying using digital sinusoidal oscillator 相位/振幅移位键控使用数字正弦振荡器
The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011 Pub Date : 2011-05-17 DOI: 10.1109/ECTICON.2011.5947825
P. Wisartpong, R. Punchalard, A. Nosan
{"title":"Phase/amplitude shift keying using digital sinusoidal oscillator","authors":"P. Wisartpong, R. Punchalard, A. Nosan","doi":"10.1109/ECTICON.2011.5947825","DOIUrl":"https://doi.org/10.1109/ECTICON.2011.5947825","url":null,"abstract":"The Phase/Amplitude shift keying modulator using digital oscillator is presented in this work. The proposed method comprises of digital line coder, digital differentiator and digital oscillator. The line coding signal is transformed into impulse signal to excite the oscillator to generate the desired PSK or ASK signal. The advantages of this technique are simple, high accuracy and robust to noise. It is robust to noise because all components are digital implementation.","PeriodicalId":123701,"journal":{"name":"The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122907461","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
A fast and automatic detection of epi- and endo-cardium using MR images 一种快速和自动检测外膜和心内膜使用磁共振图像
The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011 Pub Date : 2011-05-17 DOI: 10.1109/ECTICON.2011.5948020
R. Nitisantawakup, Y. Jiraraksopakun, W. Kumwilaisak
{"title":"A fast and automatic detection of epi- and endo-cardium using MR images","authors":"R. Nitisantawakup, Y. Jiraraksopakun, W. Kumwilaisak","doi":"10.1109/ECTICON.2011.5948020","DOIUrl":"https://doi.org/10.1109/ECTICON.2011.5948020","url":null,"abstract":"This paper proposes a fast and automatic algorithm to detect epi-and endo-cardium contours on short-axis cardiac magnetic resonance (CMR) images based on combined methods motivated from a double thresholding method [1]. Briefly, it rapidly detects endo-cardium contour and left ventricular (LV) chamber region. Using the endo-cardium contour as initial seeds, the algorithm applies region growing of the LV in polar coordinates to achieve a reasonable epi-cardium contour. Preliminary results with the online cardiac MR database show that the proposed method can provide a mean absolute error of 54.325 ± 5.24 mm2 for myocardium area computed from endo- and epi-cardium contour detection, accounting for 92% accuracy compared to the ground truth. The total time of detection is approximately 0.86 and 3.26 seconds per image frame for endo- and epi-cardium contours, respectively. These promising results reflect a potential use of the proposed algorithm for clinical applications in the future.","PeriodicalId":123701,"journal":{"name":"The 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129321807","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: 1
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