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2016 IEEE Middle East Conference on Antennas and Propagation (MECAP)最新文献

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Design and implementationof 10W, highly linear, wideband and efficient power amplifier using harmonic termination 基于谐波端接的10W高线性、宽带、高效功率放大器的设计与实现
2016 IEEE Middle East Conference on Antennas and Propagation (MECAP) Pub Date : 2016-09-01 DOI: 10.1109/MECAP.2016.7790108
A. Mahdi, A. Sobih, Magdy A. El-Kafafi
{"title":"Design and implementationof 10W, highly linear, wideband and efficient power amplifier using harmonic termination","authors":"A. Mahdi, A. Sobih, Magdy A. El-Kafafi","doi":"10.1109/MECAP.2016.7790108","DOIUrl":"https://doi.org/10.1109/MECAP.2016.7790108","url":null,"abstract":"In this paper, the design of a 10W, highly linear, wideband and efficient power amplifier is introduced. The design is based on Cree's CGH40010F GaN HEMT biased in class AB. The amplifier's high linearity is ensured through the use of a fourth order Chebyshev low filter as the output matching network which serves to get rid of higher order harmonics as well as any resulting out of band intermodulation products. At an output power of 40 dBm, the designed amplifier achieves a wide bandwidth extending from 1 to 2.5 GHz (85% fractional bandwidth), while maintaing a high power added efficiency (PAE) ranging from 48-55% across the entire operation bandwidth. Furthermore, the achieved amplifier output IP2 and IP3 are 47 and 76 dBm, respectively.","PeriodicalId":366020,"journal":{"name":"2016 IEEE Middle East Conference on Antennas and Propagation (MECAP)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115467685","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
Wideband circularly polarized pixel antenna using special EBG approach: Building of agile antenna ARMA for space applications 基于特殊EBG方法的宽带圆极化像元天线:用于空间应用的敏捷天线ARMA的构建
2016 IEEE Middle East Conference on Antennas and Propagation (MECAP) Pub Date : 2016-09-01 DOI: 10.1109/MECAP.2016.7790084
A. Siblini, H. Abou Taam, B. Jecko, M. Rammal, A. Bellion
{"title":"Wideband circularly polarized pixel antenna using special EBG approach: Building of agile antenna ARMA for space applications","authors":"A. Siblini, H. Abou Taam, B. Jecko, M. Rammal, A. Bellion","doi":"10.1109/MECAP.2016.7790084","DOIUrl":"https://doi.org/10.1109/MECAP.2016.7790084","url":null,"abstract":"This paper presents a circularly polarized antenna based on new electromagnetic band-gap material antenna approach called pixel. The pixel concept was published in many papers concerning the agile radiating matrix antenna. In this paper we study the pixel generating circularly polarized field. This study will be the main step to introduce agility in beam forming of the matrix antenna for the space applications. Also a comparison between the pixel and patch antenna is done.","PeriodicalId":366020,"journal":{"name":"2016 IEEE Middle East Conference on Antennas and Propagation (MECAP)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124767190","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 comparison between two different excitations for Quasi-Yagi antennas 准八木天线两种不同激励的比较
2016 IEEE Middle East Conference on Antennas and Propagation (MECAP) Pub Date : 2016-09-01 DOI: 10.1109/MECAP.2016.7790083
S. S. Jehangir, M. Sharawi
{"title":"A comparison between two different excitations for Quasi-Yagi antennas","authors":"S. S. Jehangir, M. Sharawi","doi":"10.1109/MECAP.2016.7790083","DOIUrl":"https://doi.org/10.1109/MECAP.2016.7790083","url":null,"abstract":"A wide-band Quasi-Yagi antenna with loop excitation and a performance comparison between a dipole based Quasi-Yagi are presented, targeting the 5.8 GHz band. The proposed Quasi-Yagi antenna with loop excitation has a very wide measured bandwidth of 1.43 GHz which covers from 5.574-7 GHz. It has a very high Front-to-back ratio (FBR) of 18.7 dB with a ground size of 11 mm. The proposed antenna has a gain of 4.7 dBi, overall size of 60 × 60 mm2, and efficiency of 93%. The dipole based Quasi-Yagi antenna has a minimum measured bandwidth of 963 MHz and minimum FBR of 12 dB with a ground size of 18.6 mm. It has a gain of 3.56 dBi, overall size of 30 × 25 mm2, and efficiency of 73%. The superior efficiency, bandwidth, gain and FBR performance of the loop excited one comes at the cost of 79% larger size.","PeriodicalId":366020,"journal":{"name":"2016 IEEE Middle East Conference on Antennas and Propagation (MECAP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128692290","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: 10
New configuration for multiband ultra compact gap resonator based D-CRLH 基于D-CRLH的多波段超紧凑间隙谐振器的新结构
2016 IEEE Middle East Conference on Antennas and Propagation (MECAP) Pub Date : 2016-09-01 DOI: 10.1109/MECAP.2016.7790118
A. F. Daw, M. Abdalla, H. Elhennawy
{"title":"New configuration for multiband ultra compact gap resonator based D-CRLH","authors":"A. F. Daw, M. Abdalla, H. Elhennawy","doi":"10.1109/MECAP.2016.7790118","DOIUrl":"https://doi.org/10.1109/MECAP.2016.7790118","url":null,"abstract":"A new compact multiband resonator based on one modified cell of dual-composite right/left-handed microstrip structure is presented in this paper. This introduced topology proposes triple band for 7.4 GHz, 9.2 GHz, and 13 GHz with insertion loss 2.3 dB, 0.6 dB, and 0.55 dB, respectively. Moreover, the return losses are equal 13 dB, 43 dB, and 10 dB, respectively. The paper elaborates the equivalent circuit model, analytical study and 3D full-wave simulation. Furthermore, the design realizes compactness size (13.2 × 5.9 mm2). The quality factor demonstrates selectivity equals 35, 8.18, and 48.1 at the four bands, respectively.","PeriodicalId":366020,"journal":{"name":"2016 IEEE Middle East Conference on Antennas and Propagation (MECAP)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128920218","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
Compression technique for retrodirective reflectors using transformation optics 变换光学逆行反射器的压缩技术
2016 IEEE Middle East Conference on Antennas and Propagation (MECAP) Pub Date : 2016-09-01 DOI: 10.1109/MECAP.2016.7790081
H. Haddad, R. Loison, R. Gillard, A. Jrad, A. Harmouch
{"title":"Compression technique for retrodirective reflectors using transformation optics","authors":"H. Haddad, R. Loison, R. Gillard, A. Jrad, A. Harmouch","doi":"10.1109/MECAP.2016.7790081","DOIUrl":"https://doi.org/10.1109/MECAP.2016.7790081","url":null,"abstract":"In this paper, the design of compressed retrodirective reflectors via transformation optics is addressed. The proposed method enables a compressed reflector to perform as a classical retrodirective corner reflector while having a much lower profile. Using a simple linear coordinate transformation, the lower profile can be achieved with a TO domain in the reflector consisting of anisotropic homogeneous media. The proposed design is validated at f0=8GHz by full wave electromagnetic simulations. Furthermore, using the Effective Medium Theory approach, the practical feasibility of the involved medium distribution is discussed and verified. The results of the investigations could be of interest in different radar, communication and identification applications.","PeriodicalId":366020,"journal":{"name":"2016 IEEE Middle East Conference on Antennas and Propagation (MECAP)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125346971","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
Reconfigurable pattern beam steering loop antenna 可重构方向波束导向环天线
2016 IEEE Middle East Conference on Antennas and Propagation (MECAP) Pub Date : 2016-09-01 DOI: 10.1109/MECAP.2016.7790110
S. I. El-Henawy, A. Safwat, H. El-Hennawy
{"title":"Reconfigurable pattern beam steering loop antenna","authors":"S. I. El-Henawy, A. Safwat, H. El-Hennawy","doi":"10.1109/MECAP.2016.7790110","DOIUrl":"https://doi.org/10.1109/MECAP.2016.7790110","url":null,"abstract":"A reconfigurable radiation pattern loop antenna is presented in this paper. The loop antenna operates at 2.4 GHz (WLAN/ Bluetooth /LTE/UMTS) having an omnidirectional radiation pattern in the antenna plane. The reconfigurability is achieved using; primary loop antenna that is surrounded by secondary ones which are used to cancel the current and hence the radiation pattern in their direction. Accordingly, the radiation pattern can be altered from an omnidirectional to a directional one by controlling the secondary antennas.","PeriodicalId":366020,"journal":{"name":"2016 IEEE Middle East Conference on Antennas and Propagation (MECAP)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133531451","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
Reflectarray antenna for breast cancer detection and biomedical applications 用于乳腺癌检测和生物医学应用的反射天线
2016 IEEE Middle East Conference on Antennas and Propagation (MECAP) Pub Date : 2016-09-01 DOI: 10.1109/MECAP.2016.7790123
Khaled Hasan, M. El hadidy, H. Morsi
{"title":"Reflectarray antenna for breast cancer detection and biomedical applications","authors":"Khaled Hasan, M. El hadidy, H. Morsi","doi":"10.1109/MECAP.2016.7790123","DOIUrl":"https://doi.org/10.1109/MECAP.2016.7790123","url":null,"abstract":"The main objective of this paper is to design a very directive reflectarray antenna (RA) for biomedical imaging applications and breast cancer detection. The RA consists of a horn antenna as a feeder and a reflection surface based on double ring (DR) unit cell that achieves 350° phase range at a resonant frequency of 2.2 GHz. The designed RA is a pencil beam antenna with a high directivity gain of 19.6 dBi, small Half-Power-Beamwidth (HPBW) of and low Side-Lobe Level (SLL) of -15.9 dB compared to the horn antenna with a directivity gain of 6.5 dBi, HPBW of 109° and Side-Lobe Level of -12.3 dB. A fair comparison between the RA and the horn antenna is presented based on a 3D EM simulation with respect to Bio Tissue/Fat material box and human breast model as well. The designed RA achieves larger penetration depth and smaller power loss density/specific absorption rate (PLD/SAR) comparing with the horn antenna. Furthermore, it provides a higher resolution and a smaller angular scanning capability.","PeriodicalId":366020,"journal":{"name":"2016 IEEE Middle East Conference on Antennas and Propagation (MECAP)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114176551","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
Effective permittivity of snow for radar detection: Numerical validation by the fem method 雪的有效介电常数用于雷达探测:有限元法的数值验证
2016 IEEE Middle East Conference on Antennas and Propagation (MECAP) Pub Date : 2016-09-01 DOI: 10.1109/MECAP.2016.7790098
F. Mazeh, H. Ayad, F. Ndadijimana, G. Faour, M. Fadlallah, J. Jomaah
{"title":"Effective permittivity of snow for radar detection: Numerical validation by the fem method","authors":"F. Mazeh, H. Ayad, F. Ndadijimana, G. Faour, M. Fadlallah, J. Jomaah","doi":"10.1109/MECAP.2016.7790098","DOIUrl":"https://doi.org/10.1109/MECAP.2016.7790098","url":null,"abstract":"This paper presents a step-by-step procedure to extract the effective permittivity of dry and wet snow in an electromagnetic simulator. The S-parameters are extracted using HFSS (High Frequency Structure Simulator), which is a Finite Element Method (FEM) full wave simulator. The permittivity curve is calculated using the S21 retrieval method. The calculated permittivity is compared with theoretical mixture models (Maxwell Garnett and Bruggeman Symmetric) with a verification that it lies between the effective permittivity theoretical bounds.","PeriodicalId":366020,"journal":{"name":"2016 IEEE Middle East Conference on Antennas and Propagation (MECAP)","volume":"114 Suppl 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125881725","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
Efficient design procedure of dual-mode antennas based on the characteristic modes theory 基于特征模理论的双模天线高效设计方法
2016 IEEE Middle East Conference on Antennas and Propagation (MECAP) Pub Date : 2016-09-01 DOI: 10.1109/MECAP.2016.7790113
M. Bagheriasl, K. Mohammadpour‐Aghdam, R. Faraji-Dana
{"title":"Efficient design procedure of dual-mode antennas based on the characteristic modes theory","authors":"M. Bagheriasl, K. Mohammadpour‐Aghdam, R. Faraji-Dana","doi":"10.1109/MECAP.2016.7790113","DOIUrl":"https://doi.org/10.1109/MECAP.2016.7790113","url":null,"abstract":"This paper presents a systematic and efficient approach for design of a dual-mode antenna. In this approach, characteristic mode analysis is performed on the antenna structure to assess the suitability of the proposed structure for wideband dual-mode operation. After its suitability is assessed, a parametric study is performed on characteristic modes of the structure to extract some guidelines for the antenna design. Finally, these guidelines are used for design of the dual-mode antenna.","PeriodicalId":366020,"journal":{"name":"2016 IEEE Middle East Conference on Antennas and Propagation (MECAP)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129250339","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
Compact wilkinson power divider with Inductive loaded microstrip line for harmonics suppression 紧凑型威尔金森功率分压器，电感负载微带线用于谐波抑制
2016 IEEE Middle East Conference on Antennas and Propagation (MECAP) Pub Date : 2016-09-01 DOI: 10.1109/MECAP.2016.7790114
Eslam N. Mohamed, A. Sobih, A. El-Tager
{"title":"Compact wilkinson power divider with Inductive loaded microstrip line for harmonics suppression","authors":"Eslam N. Mohamed, A. Sobih, A. El-Tager","doi":"10.1109/MECAP.2016.7790114","DOIUrl":"https://doi.org/10.1109/MECAP.2016.7790114","url":null,"abstract":"This paper introduces a miniaturization technique of a microstrip Wilkinson power divider while enhancing harmonic suppression. This technique based on substituting the quarter wavelength microstrip lines employed in conventional Wilkinson power dividers with Inductive loaded microstrip line which consist of two inductors and a microstrip line. Through ABCD matrix the general design equations for this design are derived in closed form. A reduction in the size together with very good isolation, reflection, and coupling characteristics is achieved. In addition, Monte Carlo simulation verifies that the proposed design is insensitive to fabrication and component tolerances.","PeriodicalId":366020,"journal":{"name":"2016 IEEE Middle East Conference on Antennas and Propagation (MECAP)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129023155","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
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