Pub Date : 2014-12-01DOI: 10.1109/MMS.2014.7088788
J. Floc'h, A. Tarot
The goal of the design is to build an array with more than 12% bandwidth between the frequencies of 4.4 GHZ to 5 GHz. We choose printed dipole to realize this array. We describe the different step of the design in simulation and we compare the results with the measurements.
{"title":"Broadband design array of printed dipole","authors":"J. Floc'h, A. Tarot","doi":"10.1109/MMS.2014.7088788","DOIUrl":"https://doi.org/10.1109/MMS.2014.7088788","url":null,"abstract":"The goal of the design is to build an array with more than 12% bandwidth between the frequencies of 4.4 GHZ to 5 GHz. We choose printed dipole to realize this array. We describe the different step of the design in simulation and we compare the results with the measurements.","PeriodicalId":166697,"journal":{"name":"Proceedings of 2014 Mediterranean Microwave Symposium (MMS2014)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121524490","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 : 2014-12-01DOI: 10.1109/MMS.2014.7088963
H. Oraizi, Mehdi Hamidkhani, S. Hedayati
In this paper, a circular metallic plate antenna suspended by shorting pins over a ground plate with a novel stepped coaxial feed is proposed for miniaturized ultra-wide band applications in the frequency range 2.6-13.2 GHz. This antenna achieves acceptable miniaturization and provides excellent UWB input impedance bandwidth and stable radiation patterns. It achieves about 110 percent bandwidth. The proposed antenna achieves both miniaturization and high bandwidth in UWB wireless applications, which are quite contrary and opposing characteristics. The performance of the proposed antenna is quite good compared to other similar structures.
{"title":"Miniaturized ultra-wideband circular metallic plate antenna suspended by shorting pins","authors":"H. Oraizi, Mehdi Hamidkhani, S. Hedayati","doi":"10.1109/MMS.2014.7088963","DOIUrl":"https://doi.org/10.1109/MMS.2014.7088963","url":null,"abstract":"In this paper, a circular metallic plate antenna suspended by shorting pins over a ground plate with a novel stepped coaxial feed is proposed for miniaturized ultra-wide band applications in the frequency range 2.6-13.2 GHz. This antenna achieves acceptable miniaturization and provides excellent UWB input impedance bandwidth and stable radiation patterns. It achieves about 110 percent bandwidth. The proposed antenna achieves both miniaturization and high bandwidth in UWB wireless applications, which are quite contrary and opposing characteristics. The performance of the proposed antenna is quite good compared to other similar structures.","PeriodicalId":166697,"journal":{"name":"Proceedings of 2014 Mediterranean Microwave Symposium (MMS2014)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115336218","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 : 2014-12-01DOI: 10.1109/MMS.2014.7088984
S. Matah, L. Zenkouar
RF system simulation constitutes a practical tool in radar receivers design. In fact, a particular type of simulation called “budget” is very useful in RF system design of modern digital radar receive systems. Starting with low noise amplifier (LNA) and ending with analog to digital converter (ADC), these systems can be presented in a synthetic format. A typical modern radar receiver is first presented and described stage by stage. Subsequently, some design considerations are discussed. Finally, simulation results are presented and commented.
{"title":"A practical approach for RF system design of an S-band modern digital radar receiver","authors":"S. Matah, L. Zenkouar","doi":"10.1109/MMS.2014.7088984","DOIUrl":"https://doi.org/10.1109/MMS.2014.7088984","url":null,"abstract":"RF system simulation constitutes a practical tool in radar receivers design. In fact, a particular type of simulation called “budget” is very useful in RF system design of modern digital radar receive systems. Starting with low noise amplifier (LNA) and ending with analog to digital converter (ADC), these systems can be presented in a synthetic format. A typical modern radar receiver is first presented and described stage by stage. Subsequently, some design considerations are discussed. Finally, simulation results are presented and commented.","PeriodicalId":166697,"journal":{"name":"Proceedings of 2014 Mediterranean Microwave Symposium (MMS2014)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125345162","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 : 2014-12-01DOI: 10.1109/MMS.2014.7088933
Z. Ziari, Hala Mallem, S. Sahli
In this paper, surface potential decay of polyimide film has been experimentally studied after negative corona charge deposition as a function of initial surface potential and different sample temperatures. The experimental tests have been performed under light radiation. The evolution of the surface potential decay with time recorded at sample temperature of about 27°C showed that the faster decay in polyimide samples occurs with higher charging voltage. For high charging level, cross over phenomenon has been observed. The surface potential decay characteristic of corona charged polyimide for different sample temperatures shows that the influence of the sample temperature on the surface potential decay is very significant. The surface potential decay rate increases with the increase of the sample temperature.
{"title":"Influence of the temperature on the surface potential decay of polymer films charged negatively by corona discharge under light radiation","authors":"Z. Ziari, Hala Mallem, S. Sahli","doi":"10.1109/MMS.2014.7088933","DOIUrl":"https://doi.org/10.1109/MMS.2014.7088933","url":null,"abstract":"In this paper, surface potential decay of polyimide film has been experimentally studied after negative corona charge deposition as a function of initial surface potential and different sample temperatures. The experimental tests have been performed under light radiation. The evolution of the surface potential decay with time recorded at sample temperature of about 27°C showed that the faster decay in polyimide samples occurs with higher charging voltage. For high charging level, cross over phenomenon has been observed. The surface potential decay characteristic of corona charged polyimide for different sample temperatures shows that the influence of the sample temperature on the surface potential decay is very significant. The surface potential decay rate increases with the increase of the sample temperature.","PeriodicalId":166697,"journal":{"name":"Proceedings of 2014 Mediterranean Microwave Symposium (MMS2014)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126184881","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 : 2014-12-01DOI: 10.1109/MMS.2014.7088950
Omar Lehmer, Farid Ben Abdelouahab, M. Essaaidi
In this paper, a new design of a reconfigurable miniaturized planar antenna suitable for mobile handheld standard applications is presented. The proposed antenna is designed on a FR4 substrate with a relatively permittivity of 4.4, a thickness of 1.56mm and a loss tangent of 0.02. And its dimension is 18 mm × 80 mm2. This dimension is so reduced compared with the size of the DVB antennas, a portion of monopoly loaded and connected by three empty holes at the opposite side of the substrate, by inserting tunable inductance on the monopoly we can get a frequency reconfigurability and the antenna operates well in the DVB-H band (470-860) MHz and for some inductance value it can operate in the GSM 800 and GSM 900 band.
{"title":"A new reconfigurable antenna for digital video broadcasting","authors":"Omar Lehmer, Farid Ben Abdelouahab, M. Essaaidi","doi":"10.1109/MMS.2014.7088950","DOIUrl":"https://doi.org/10.1109/MMS.2014.7088950","url":null,"abstract":"In this paper, a new design of a reconfigurable miniaturized planar antenna suitable for mobile handheld standard applications is presented. The proposed antenna is designed on a FR4 substrate with a relatively permittivity of 4.4, a thickness of 1.56mm and a loss tangent of 0.02. And its dimension is 18 mm × 80 mm2. This dimension is so reduced compared with the size of the DVB antennas, a portion of monopoly loaded and connected by three empty holes at the opposite side of the substrate, by inserting tunable inductance on the monopoly we can get a frequency reconfigurability and the antenna operates well in the DVB-H band (470-860) MHz and for some inductance value it can operate in the GSM 800 and GSM 900 band.","PeriodicalId":166697,"journal":{"name":"Proceedings of 2014 Mediterranean Microwave Symposium (MMS2014)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122326010","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 : 2014-12-01DOI: 10.1109/MMS.2014.7088944
G. Gragnani, Maurizio Diaz Mendez
This paper deals with the problem of the reconstruction of scattering objects illuminated by electromagnetic sources, when only limited-angle data are available. By starting from a previously developed semi-analytical method that in principle would require the knowledge of the scattered data over a circular domain, using some window functions, only a partial view of data is considered. Both numerical and experimental data are used to investigate and discuss the effects of limited aperture data.
{"title":"Results on the reconstruction of scattering objects using a semi-analytical formulation of the equivalent electromagnetic source when limited aperture data are available","authors":"G. Gragnani, Maurizio Diaz Mendez","doi":"10.1109/MMS.2014.7088944","DOIUrl":"https://doi.org/10.1109/MMS.2014.7088944","url":null,"abstract":"This paper deals with the problem of the reconstruction of scattering objects illuminated by electromagnetic sources, when only limited-angle data are available. By starting from a previously developed semi-analytical method that in principle would require the knowledge of the scattered data over a circular domain, using some window functions, only a partial view of data is considered. Both numerical and experimental data are used to investigate and discuss the effects of limited aperture data.","PeriodicalId":166697,"journal":{"name":"Proceedings of 2014 Mediterranean Microwave Symposium (MMS2014)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127174841","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 : 2014-12-01DOI: 10.1109/MMS.2014.7088939
Anis Ben Arfi, F. Ghannouchi, R. Barrak, C. Rebai
This paper addresses some of the considerations related to the design and implementation of multiband Global Navigation Satellite System (GNSS) receivers. In this work, the impact of the application of band-pass continuous-time delta-sigma modulation on GNSS signals was also examined. In order to facilitate the implementation of the multiband delta-sigma based GNSS receiver, a modulator architecture that is based on an all-digital feedback loop using zero-insertion upsampling was adopted and frequency downscaling technique was used. The latter consists on reducing the operating frequency of the system, which makes the implementation on a field programmable gate array (FPGA) possible.
{"title":"A GNSS receiver using band-pass continuous-time delta-sigma modulator","authors":"Anis Ben Arfi, F. Ghannouchi, R. Barrak, C. Rebai","doi":"10.1109/MMS.2014.7088939","DOIUrl":"https://doi.org/10.1109/MMS.2014.7088939","url":null,"abstract":"This paper addresses some of the considerations related to the design and implementation of multiband Global Navigation Satellite System (GNSS) receivers. In this work, the impact of the application of band-pass continuous-time delta-sigma modulation on GNSS signals was also examined. In order to facilitate the implementation of the multiband delta-sigma based GNSS receiver, a modulator architecture that is based on an all-digital feedback loop using zero-insertion upsampling was adopted and frequency downscaling technique was used. The latter consists on reducing the operating frequency of the system, which makes the implementation on a field programmable gate array (FPGA) possible.","PeriodicalId":166697,"journal":{"name":"Proceedings of 2014 Mediterranean Microwave Symposium (MMS2014)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116812294","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 : 2014-12-01DOI: 10.1109/MMS.2014.7088992
Meriem Harbadji, A. Boufrioua
This paper is highly focused on the multiband application of the microstrip patch antenna. In first phase, rectangular microstrip antenna (RMSA) with a rectangular slot cut inside the rectangular patch at an appropriate position is simulated and analyzed. Then, the double (dual) slot had been embedded in the rectangular patch. Comparative analysis between these proposed structures and a simple microstrip patch antenna is done. Parameters as return loss and bandwidth are analyzed using FDTD algorithm in MATLAB. The use of multi slotted concept in rectangular patch antenna makes it flexible in terms of bandwidth control.
{"title":"Investigation of rectangular multi-band microstrip patch antennas with slots","authors":"Meriem Harbadji, A. Boufrioua","doi":"10.1109/MMS.2014.7088992","DOIUrl":"https://doi.org/10.1109/MMS.2014.7088992","url":null,"abstract":"This paper is highly focused on the multiband application of the microstrip patch antenna. In first phase, rectangular microstrip antenna (RMSA) with a rectangular slot cut inside the rectangular patch at an appropriate position is simulated and analyzed. Then, the double (dual) slot had been embedded in the rectangular patch. Comparative analysis between these proposed structures and a simple microstrip patch antenna is done. Parameters as return loss and bandwidth are analyzed using FDTD algorithm in MATLAB. The use of multi slotted concept in rectangular patch antenna makes it flexible in terms of bandwidth control.","PeriodicalId":166697,"journal":{"name":"Proceedings of 2014 Mediterranean Microwave Symposium (MMS2014)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132913138","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 : 2014-12-01DOI: 10.1109/MMS.2014.7088978
T. Sharma, R. Darraji, F. Ghannouchi
This paper discusses the design of different broadband continuous mode power amplifiers (PAs) using waveform engineering. The continuous mode provides wider design space for the realization of broadband high efficiency PAs by proper tuning of fundamental, second, third and fourth harmonic impedances. This work discusses in detail the process of waveform synthesis for class-J, continuous class-F and continuous inverse class-F PAs, which are the most popular continuous mode classes. The validation of our analysis is performed using a 10-Watt Gallium Nitride (GaN) device from Cree Inc. Three different PAs are implemented in Advanced Design Systems (ADS). These PAs are operated in Class-J, continuous class-F and continuous inverse class-F, respectively. Distinctive performance in terms of drain efficiency, output power and transducer gain over wide frequency band is exhibited. The operational class of each PA under study is verified depending on the shaping of voltage and current waveforms that are de-embedded at current generator plane of the packaged device.
{"title":"High efficiency continuous mode power amplifiers using waveform engineering","authors":"T. Sharma, R. Darraji, F. Ghannouchi","doi":"10.1109/MMS.2014.7088978","DOIUrl":"https://doi.org/10.1109/MMS.2014.7088978","url":null,"abstract":"This paper discusses the design of different broadband continuous mode power amplifiers (PAs) using waveform engineering. The continuous mode provides wider design space for the realization of broadband high efficiency PAs by proper tuning of fundamental, second, third and fourth harmonic impedances. This work discusses in detail the process of waveform synthesis for class-J, continuous class-F and continuous inverse class-F PAs, which are the most popular continuous mode classes. The validation of our analysis is performed using a 10-Watt Gallium Nitride (GaN) device from Cree Inc. Three different PAs are implemented in Advanced Design Systems (ADS). These PAs are operated in Class-J, continuous class-F and continuous inverse class-F, respectively. Distinctive performance in terms of drain efficiency, output power and transducer gain over wide frequency band is exhibited. The operational class of each PA under study is verified depending on the shaping of voltage and current waveforms that are de-embedded at current generator plane of the packaged device.","PeriodicalId":166697,"journal":{"name":"Proceedings of 2014 Mediterranean Microwave Symposium (MMS2014)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128991940","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 : 2014-12-01DOI: 10.1109/MMS.2014.7088953
B. Mekimah, A. Messai, S. Aris, M. A. Meriche, T. Fortaki
We treat in this paper the effects of the uniaxial anisotropy and the loss tangent on resonant frequencies of microstrip patches consist of two perfectly conducting rectangular plates stacked, embedded in a bilayer medium containing isotropic or anisotropic materials. The Green's functions are discussed in detail and numerical results are validated by comparing the computed results with previously published data. The numerical results show that the loss tangent of dielectric substrate has almost no effect on resonant frequencies, but it strongly affects the imaginary parts of the resonant frequencies of the antenna. Once the imaginary parts are modified so the bandwith affected.
{"title":"The effect of the loss tangent on the bandwidth of the microstrip antennas in stacked configuration","authors":"B. Mekimah, A. Messai, S. Aris, M. A. Meriche, T. Fortaki","doi":"10.1109/MMS.2014.7088953","DOIUrl":"https://doi.org/10.1109/MMS.2014.7088953","url":null,"abstract":"We treat in this paper the effects of the uniaxial anisotropy and the loss tangent on resonant frequencies of microstrip patches consist of two perfectly conducting rectangular plates stacked, embedded in a bilayer medium containing isotropic or anisotropic materials. The Green's functions are discussed in detail and numerical results are validated by comparing the computed results with previously published data. The numerical results show that the loss tangent of dielectric substrate has almost no effect on resonant frequencies, but it strongly affects the imaginary parts of the resonant frequencies of the antenna. Once the imaginary parts are modified so the bandwith affected.","PeriodicalId":166697,"journal":{"name":"Proceedings of 2014 Mediterranean Microwave Symposium (MMS2014)","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122388555","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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