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Int. J. Ultra Wideband Commun. Syst.最新文献

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Compact UWB filter with narrow notched band based on grounded circular patch resonator 基于接地圆形贴片谐振器的窄陷波带紧凑型超宽带滤波器
Int. J. Ultra Wideband Commun. Syst. Pub Date : 2019-07-26 DOI: 10.1504/IJUWBCS.2019.101173
Mona Yazdani Shavakand, J. Ahmadi-shokouh
{"title":"Compact UWB filter with narrow notched band based on grounded circular patch resonator","authors":"Mona Yazdani Shavakand, J. Ahmadi-shokouh","doi":"10.1504/IJUWBCS.2019.101173","DOIUrl":"https://doi.org/10.1504/IJUWBCS.2019.101173","url":null,"abstract":"In this paper, a compact ultra-wideband (UWB) band-pass filter (BPF) with a single narrow notched band is proposed. This filter is designed using a novel multiple-mode resonator (MMR) based on a grounded circular patch resonator (GCPR). The proposed MMR generates three main resonances and two transmission zeros (TZs). A semi-lozenge slot (SLS) is proposed to control resonant frequencies and obtain UWB operation. The 3dB notched band is achieved from 5.65-5.8 GHz by connecting an arrowhead stub inside the filter. The UWB filter has been simulated, fabricated and measured. The dimension of the designed filter is about 0.31 × 0.31 λg × λg.","PeriodicalId":294875,"journal":{"name":"Int. J. Ultra Wideband Commun. Syst.","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116718308","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
Performance of multi-band OFDM UWB communication systems in presence of IEEE802.11n WLAN interference for different antenna scheme configurations 不同天线方案配置下存在IEEE802.11n干扰的多频带OFDM UWB通信系统性能
Int. J. Ultra Wideband Commun. Syst. Pub Date : 2019-07-23 DOI: 10.1504/IJUWBCS.2019.101190
E. Shaheen
{"title":"Performance of multi-band OFDM UWB communication systems in presence of IEEE802.11n WLAN interference for different antenna scheme configurations","authors":"E. Shaheen","doi":"10.1504/IJUWBCS.2019.101190","DOIUrl":"https://doi.org/10.1504/IJUWBCS.2019.101190","url":null,"abstract":"Multi-band orthogonal frequency division multiplexing ultra-wideband (MB OFDM UWB) communication system has been a leading proposal in the IEEE 802.15.3a standard and has been adopted in the ECMA standard for wireless personal area networks. In this paper, the performance of the MB-OFDM UWB communication system in the Saleh-Valenzuela multi-path UWB channel model using different antenna scheme configurations has been analytically evaluated. The analytical evaluation has been investigated for the three antenna scheme configurations which are the single input multiple output (SIMO), the multiple input single output (MISO), and the multiple input multiple output (MIMO). The issue of existence of high power inband interference signal such as the IEEE802.11n has been also analytically evaluated. A practical link budget analysis is considered. It was shown that the performance of the desired MB-OFDM UWB SIMO/MISO/MIMO communication system can severely deteriorated due to presence of such high power inband interference signal. The obtained analytical results are validated with the aid of extensive simulation results.","PeriodicalId":294875,"journal":{"name":"Int. J. Ultra Wideband Commun. Syst.","volume":"124 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130960770","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
High gain dual-polarised pentagonal microstrip antenna for wireless communications 用于无线通信的高增益双极化五边形微带天线
Int. J. Ultra Wideband Commun. Syst. Pub Date : 2019-07-23 DOI: 10.1504/IJUWBCS.2019.101177
R. Bhadade, S. P. Mahajan
{"title":"High gain dual-polarised pentagonal microstrip antenna for wireless communications","authors":"R. Bhadade, S. P. Mahajan","doi":"10.1504/IJUWBCS.2019.101177","DOIUrl":"https://doi.org/10.1504/IJUWBCS.2019.101177","url":null,"abstract":"In this paper we propose a dual polarised pentagonal microstrip antenna for massive MIMO-base station to operate at 2.4 GHz WLAN band (IEEE 802.11 b/g/n/ax). The various researchers have used antenna array with different feeds for the massive MIMO BS to obtain the desired gain with required impedance bandwidth. However, this proposed work contradicts with existing method by using a single novel radiating element with suspended substrate to achieve the desired gain and required impedance bandwidth. The circular polarisation is achieved by using two coaxial-probe feeds. The main focus of research is on the selection of proper shape of the radiating element for Massive MIMO BS. The proposed antenna is successfully simulated using HFSS 13.0, fabricated on a FR-4 substrate and measured. The proposed antenna exhibits a much higher gain of 6.17 dB, improved impedance bandwidth of 171.9 MHz (return loss, S11=−10 dB), the axial ratio (AR) is 1.78 dB (< 3 dB), the patch area of 1,775 mm2, and also yields return loss better than −15 dB around the centre frequency of 2.45 GHz. The measured characteristics of the antenna are in good agreement with the simulated results.","PeriodicalId":294875,"journal":{"name":"Int. J. Ultra Wideband Commun. Syst.","volume":"47 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133018477","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
Queueing analysis of ultra-wideband medium access control protocol with finite buffer 有限缓冲区超宽带介质访问控制协议的排队分析
Int. J. Ultra Wideband Commun. Syst. Pub Date : 2019-07-23 DOI: 10.1504/IJUWBCS.2019.101166
M. Ahmed, H. Al-Mahdi
{"title":"Queueing analysis of ultra-wideband medium access control protocol with finite buffer","authors":"M. Ahmed, H. Al-Mahdi","doi":"10.1504/IJUWBCS.2019.101166","DOIUrl":"https://doi.org/10.1504/IJUWBCS.2019.101166","url":null,"abstract":"Ultra-wideband (UWB) communication has recently emerged as a technology that offers high data rate services for future wireless personal area networks. Due to its high bandwidth, it is substantial effort to design medium access control (MAC) protocols that perfectly utilise the available shared bandwidth offered by UWB technology. This paper introduces an extensive 4-dimensional finite Markov chain queueing model to investigate the performance of a multi-band protocol that was proposed in literature in terms of system occupancy, waiting time, throughput, packet loss and blocking probabilities. Our motivation is to precisely estimate packets collision probability due to randomly selection of receivers or bands. Besides introducing the finite buffer, our queuing model reflects the system behaviour in-depth. Next, we validate the obtained analytic results using discrete-event simulation. Finally, we introduce an outline of a proposal to eliminate the randomness of selecting receivers and bands.","PeriodicalId":294875,"journal":{"name":"Int. J. Ultra Wideband Commun. Syst.","volume":"33 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114028244","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
Design and analysis of multi-band circle shape MIMO antenna using defected ground structure to reduce mutual coupling 基于缺陷接地结构的多波段圆形MIMO天线设计与分析
Int. J. Ultra Wideband Commun. Syst. Pub Date : 2019-07-23 DOI: 10.1504/IJUWBCS.2019.101182
K. Babu, B. Anuradha
{"title":"Design and analysis of multi-band circle shape MIMO antenna using defected ground structure to reduce mutual coupling","authors":"K. Babu, B. Anuradha","doi":"10.1504/IJUWBCS.2019.101182","DOIUrl":"https://doi.org/10.1504/IJUWBCS.2019.101182","url":null,"abstract":"In the present paper, a multi-band circle shape MIMO radiator with and without dumbbell-shaped parasitic element for all wireless applications is proposed. The proposed antenna comprises MIMO circular shape radiating patch with U-shaped inverted slot and pair of rectangular slits. By adjusting U-shaped inverted slot, a pair of rectangular slits and neutralisation line we obtain distinct resonance frequencies centred at 3.5, 5.3, 7.0 and 8.8 GHz. The VSWR results are centred on ≤ 2 at these resonant frequencies. The far field values obtained at a wide operational bandwidth, the simulated results represent that the multi-band antenna can cover sufficient bandwidth for entire frequency bands. The multi-band antenna also shows a radiation pattern of an omni directional with an acceptable average peak gains at the resonant frequencies are 5.238 dBi, 7.044 dBi, 6.763 dBi and 7.852 dBi of LTE/WLAN bands, WiMAX band, and ITU and satellite band system applications.","PeriodicalId":294875,"journal":{"name":"Int. J. Ultra Wideband Commun. Syst.","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129010264","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
Performance evaluation of IR-UWB detectors and fusion techniques for UWB transceiver platforms 红外-超宽带探测器性能评估及超宽带收发平台融合技术
Int. J. Ultra Wideband Commun. Syst. Pub Date : 2018-06-20 DOI: 10.1504/IJUWBCS.2018.092426
V. Yajnanarayana, P. Händel
{"title":"Performance evaluation of IR-UWB detectors and fusion techniques for UWB transceiver platforms","authors":"V. Yajnanarayana, P. Händel","doi":"10.1504/IJUWBCS.2018.092426","DOIUrl":"https://doi.org/10.1504/IJUWBCS.2018.092426","url":null,"abstract":"In this paper, we analyse the performance of a multi-pulse impulse radio based ultra-wideband (IR-UWB) detector in an AWGN setting and provide different fusion strategies for fusing these detector outputs. To enable the transceiver to be used for multiple applications, the designers have different types of detectors such as energy detectors, amplitude detectors, etc., built in to a single transceiver architecture. In this paper, we derive the detection performance equation for commonly used detectors in terms of false alarm rate, shape of the pulse, and number of UWB pulses used in the detection and apply these in the fusion algorithms. We show that the performance can be improved by approximately 4 dB in terms of signal to noise ratio (SNR) for high probability of detection of a UWB signal (95%), by fusing decisions from multiple detector types compared to a standalone energy detector, in a practical scenario.","PeriodicalId":294875,"journal":{"name":"Int. J. Ultra Wideband Commun. Syst.","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130251660","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
Wireless sensor network localisation using new heuristic optimisation algorithms 使用新的启发式优化算法的无线传感器网络定位
Int. J. Ultra Wideband Commun. Syst. Pub Date : 2018-06-20 DOI: 10.1504/IJUWBCS.2018.092434
M. S. Kerdabadi, F. P. Nejad, R. Ghazizadeh, H. Farrokhi
{"title":"Wireless sensor network localisation using new heuristic optimisation algorithms","authors":"M. S. Kerdabadi, F. P. Nejad, R. Ghazizadeh, H. Farrokhi","doi":"10.1504/IJUWBCS.2018.092434","DOIUrl":"https://doi.org/10.1504/IJUWBCS.2018.092434","url":null,"abstract":"The localisation algorithms for the WSNs can be divided into range-free and range-based algorithms based on whether it is required to know the actual distances between the nodes or the distance is approximated based on the connectivity information. The range-free algorithms usually have higher localisation error compared to the range based algorithms but it is simple to implement. DV-hop is a typical range-free localisation algorithm employing hop-distance estimation. In this paper, we present three improved DV-hop localisation approaches based on imperialist competitive algorithm (ICA-DV-hop), gravitational search algorithm (GSA-DV-Hop) and inclined planes system optimisation (IPO-DV-hop). In other words, the localisation optimisation problem is solved using the heuristic algorithms to enhance the localisation results of DV-hop. The proposed approaches have been compared with particle swarm optimisation (PSO), genetic algorithm (GA) and original DV-hop method. The simulation results indicate that the proposed algorithms can reduce the localisation error and achieve higher positioning accuracy.","PeriodicalId":294875,"journal":{"name":"Int. J. Ultra Wideband Commun. Syst.","volume":"144 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116441094","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: 3
Key shaped planar UWB monopole antenna with dual band-notch characteristics 具有双带陷波特性的键形平面超宽带单极天线
Int. J. Ultra Wideband Commun. Syst. Pub Date : 2018-06-20 DOI: 10.1504/IJUWBCS.2018.092438
Manish Sharma, Yogendra Kumar Awasthi, Himanshu Singh, Raj Kumar, Sarita Kumari
{"title":"Key shaped planar UWB monopole antenna with dual band-notch characteristics","authors":"Manish Sharma, Yogendra Kumar Awasthi, Himanshu Singh, Raj Kumar, Sarita Kumari","doi":"10.1504/IJUWBCS.2018.092438","DOIUrl":"https://doi.org/10.1504/IJUWBCS.2018.092438","url":null,"abstract":"In this paper, dual vertical cross-elliptical radiating elements dual-notched ultra-wideband antenna (UWB) is proposed. The proposed antenna is compact in size (18 × 20 mm2 = 360 mm2) with combination of two ellipse and modified ground plane so as to cover UWB impedance bandwidth. There is a close agreement between the simulated and the measured results like return loss and VSWR of the proposed antenna where measured results also covers impedance UWB bandwidth from 2.84 GHz to 10.83 GHz which validates FCC standard UWB bandwidth from 3.1 GHz to 10.6 GHz. Moreover the two notched bands, i.e., WiMAX (3.30–3.80 GHz) along with C-band (3.80–4.20 GHz) and WLAN-IEEE 802.11a (5.15–5.825 GHz) band stopped so that the interference is eliminated. The proposed antenna is verified by measuring gain and radiation characteristics which exhibits nearly omni-directional pattern in the H-plane and monopole like pattern in E-plane of UWB bandwidth.","PeriodicalId":294875,"journal":{"name":"Int. J. Ultra Wideband Commun. Syst.","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127286088","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
Novel and simple monopole blade antenna with ultra-wide bandwidth for avionics applications 用于航空电子应用的新型、简单的超宽带单极叶片天线
Int. J. Ultra Wideband Commun. Syst. Pub Date : 2018-06-20 DOI: 10.1504/IJUWBCS.2018.092439
S. R. Emadian, J. Ahmadi-shokouh, A. Askani, A. Raisi
{"title":"Novel and simple monopole blade antenna with ultra-wide bandwidth for avionics applications","authors":"S. R. Emadian, J. Ahmadi-shokouh, A. Askani, A. Raisi","doi":"10.1504/IJUWBCS.2018.092439","DOIUrl":"https://doi.org/10.1504/IJUWBCS.2018.092439","url":null,"abstract":"In this paper a novel low profile radome enclosed monopole blade antenna is designed, fabricated and tested with ultra wide bandwidth for L-band, S-band and C-band applications. The antenna consists of a tapered blade mounted on a rectangular ground plane. Several circular slots are etched from the tapered blade to improve the bandwidth of the antenna. The antenna has a compact size, aero- dynamic shape and light weight and shows omnidirectional radiation patterns in azimuth plane, therefore it is suitable for unmanned aerial vehicles (UAV) and avionics applications. The simulated and measurement results are presented and discussed in the paper and they are in close agreement with each other.","PeriodicalId":294875,"journal":{"name":"Int. J. Ultra Wideband Commun. Syst.","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132317110","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
An indoor path loss model for wireless sensor networks 无线传感器网络的室内路径损耗模型
Int. J. Ultra Wideband Commun. Syst. Pub Date : 2018-06-20 DOI: 10.1504/IJUWBCS.2018.092427
M. Abdel-Rahim, M. H. Habaebi, J. Chebil, A. Hashim, M. Ahmed, M. R. Islam, A. Zyoud
{"title":"An indoor path loss model for wireless sensor networks","authors":"M. Abdel-Rahim, M. H. Habaebi, J. Chebil, A. Hashim, M. Ahmed, M. R. Islam, A. Zyoud","doi":"10.1504/IJUWBCS.2018.092427","DOIUrl":"https://doi.org/10.1504/IJUWBCS.2018.092427","url":null,"abstract":"In this paper, path loss measurements were conducted and a path loss model was proposed for wireless sensor networks (WSNs) operating in indoor environment. This is done with a view to study transmit power requirements in indoor application of WSNs. The proposed model is a hybrid of the two-ray ground reflection model and the log-normal model and considers frequency and three-dimensional link trajectory as key parameters in evaluating path loss. The study highlights the effect of height on path loss exponent by means of various measurements taken in indoor environment. Comparison with the empirical data and other models in the literature was conducted and had very favourable results for the proposed model.","PeriodicalId":294875,"journal":{"name":"Int. J. Ultra Wideband Commun. Syst.","volume":"135 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114463169","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
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