Pub Date : 2019-10-01DOI: 10.1109/CAMA47423.2019.8959771
Y. N. Wijayanto, Yahya Sukri Amrullah, F. Darwis, A. Kanno, T. Kawanishi, Purwoko Adhi
We propose a new microstrip Yagi antenna stacked with optical modulator for supporting future 5G wireless communication. The proposed device consists of a microstrip antenna on low-k dielectric substrate and a modulation resonant electrode on electro-optic (EO) crystal. The received wireless microwave signals by the antenna from free space are transferred to the resonant electrode. The standing-wave microwave electric fields along the electrode can be used for optical modulation through EO effects. The detail characteristics of the proposed device are analyzed for 28GHz microwave bands. The proposed device with simple and compact structure can be used for broadband wireless communication thrugh radio-over-fiber technology.
{"title":"Microstrip Yagi Antenna Stacked with Optical Modulator for 28GHz Communication","authors":"Y. N. Wijayanto, Yahya Sukri Amrullah, F. Darwis, A. Kanno, T. Kawanishi, Purwoko Adhi","doi":"10.1109/CAMA47423.2019.8959771","DOIUrl":"https://doi.org/10.1109/CAMA47423.2019.8959771","url":null,"abstract":"We propose a new microstrip Yagi antenna stacked with optical modulator for supporting future 5G wireless communication. The proposed device consists of a microstrip antenna on low-k dielectric substrate and a modulation resonant electrode on electro-optic (EO) crystal. The received wireless microwave signals by the antenna from free space are transferred to the resonant electrode. The standing-wave microwave electric fields along the electrode can be used for optical modulation through EO effects. The detail characteristics of the proposed device are analyzed for 28GHz microwave bands. The proposed device with simple and compact structure can be used for broadband wireless communication thrugh radio-over-fiber technology.","PeriodicalId":170627,"journal":{"name":"2019 IEEE Conference on Antenna Measurements & Applications (CAMA)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130741507","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 : 2019-10-01DOI: 10.1109/CAMA47423.2019.8959547
Muhammad Naeem Iqbal, M. Yusoff, M. Rahim, M. Hamid, Z. Johari
In this paper, a characterization setup for transmitarray unit cell analysis is designed in CST studio using rectangular to square waveguide transition for X-band applications. A wideband transmitarray unit cell is designed using split ring resonator and unit cell simulations show wide impedance matching bandwidth of 43.7%. In this simulation, the waveguide transition length is varied to reduce the reflection coefficient magnitudes below −20dB. Then, the square cross section area of waveguide is made variable and cutoff frequency variation over 4GHz is illustrated. Finally, the model for real time test setup is simulated along with the transmitarray unit cell and the results show high transmission magnitude of -O.23dB. This setup can also be used for other frequency selective surface unit cells characterization.
{"title":"X-band Rectangular to Square Waveguide Transition for Transmitarray Unit Cell Characterization","authors":"Muhammad Naeem Iqbal, M. Yusoff, M. Rahim, M. Hamid, Z. Johari","doi":"10.1109/CAMA47423.2019.8959547","DOIUrl":"https://doi.org/10.1109/CAMA47423.2019.8959547","url":null,"abstract":"In this paper, a characterization setup for transmitarray unit cell analysis is designed in CST studio using rectangular to square waveguide transition for X-band applications. A wideband transmitarray unit cell is designed using split ring resonator and unit cell simulations show wide impedance matching bandwidth of 43.7%. In this simulation, the waveguide transition length is varied to reduce the reflection coefficient magnitudes below −20dB. Then, the square cross section area of waveguide is made variable and cutoff frequency variation over 4GHz is illustrated. Finally, the model for real time test setup is simulated along with the transmitarray unit cell and the results show high transmission magnitude of -O.23dB. This setup can also be used for other frequency selective surface unit cells characterization.","PeriodicalId":170627,"journal":{"name":"2019 IEEE Conference on Antenna Measurements & Applications (CAMA)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132811506","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 : 2019-10-01DOI: 10.1109/CAMA47423.2019.8959741
N. Yonemoto, S. Futatsumori, A. Kohmura, K. Morioka, N. Kanada, Nobuhiro Sakamoto
We are investigating the millimeter wave radar system to cover the vast space with high rage resolution obtained by the combination of 90 GHz millimeter wave and Radio over Fiber (RoF) technologies. This paper shows the development of the bi-static radar connected by RoF to create the 2-D map from 1-D data by two remote antennas for position estimation. We also show the evaluation results of the 2-D positioning error for the bi-static radar system.
{"title":"Bi-static Millimeter Wave Radar Connected by Radio over Fiber for FOD Detection on Runways","authors":"N. Yonemoto, S. Futatsumori, A. Kohmura, K. Morioka, N. Kanada, Nobuhiro Sakamoto","doi":"10.1109/CAMA47423.2019.8959741","DOIUrl":"https://doi.org/10.1109/CAMA47423.2019.8959741","url":null,"abstract":"We are investigating the millimeter wave radar system to cover the vast space with high rage resolution obtained by the combination of 90 GHz millimeter wave and Radio over Fiber (RoF) technologies. This paper shows the development of the bi-static radar connected by RoF to create the 2-D map from 1-D data by two remote antennas for position estimation. We also show the evaluation results of the 2-D positioning error for the bi-static radar system.","PeriodicalId":170627,"journal":{"name":"2019 IEEE Conference on Antenna Measurements & Applications (CAMA)","volume":"3 11","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131436719","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 : 2019-10-01DOI: 10.1109/CAMA47423.2019.8959773
B. Mahatmanto, C. Apriono, F. Zulkifli, E. Rahardjo
5G technology would provide high data rates and high-quality multimedia applications. This technology needs a broad bandwidth antenna. Among various antenna types, the hexagonal-triangular fractal antenna has advantages of compact design, low-profile material, wide-bandwidth of frequency work, and low-cost material for the antenna. This paper proposes a modified Hexagonal-triangular fractal antenna for 5G at 28 GHz and ultrawideband (UWB) application. The modification consists of a tapered feedline section, a smooth notch on the ground plane, slit on the ground plane, gap-filling on patch section, and adding a reflector. The dimension is 35×52 mm. From simulation and measurement, the proposed antenna design can work from in a range frequency of 2.4 GHz until more than 30 GHz. By combining with a planar reflector element, the obtained gain is 7.65 dB at frequency 6 GHz. The proposed antenna fulfills the frequency requirements for UWB application and 5G Application.
{"title":"Hexagonal Triangular Fractal Antenna with Tapered Feedline and Reflector for 5G and UWB Applications","authors":"B. Mahatmanto, C. Apriono, F. Zulkifli, E. Rahardjo","doi":"10.1109/CAMA47423.2019.8959773","DOIUrl":"https://doi.org/10.1109/CAMA47423.2019.8959773","url":null,"abstract":"5G technology would provide high data rates and high-quality multimedia applications. This technology needs a broad bandwidth antenna. Among various antenna types, the hexagonal-triangular fractal antenna has advantages of compact design, low-profile material, wide-bandwidth of frequency work, and low-cost material for the antenna. This paper proposes a modified Hexagonal-triangular fractal antenna for 5G at 28 GHz and ultrawideband (UWB) application. The modification consists of a tapered feedline section, a smooth notch on the ground plane, slit on the ground plane, gap-filling on patch section, and adding a reflector. The dimension is 35×52 mm. From simulation and measurement, the proposed antenna design can work from in a range frequency of 2.4 GHz until more than 30 GHz. By combining with a planar reflector element, the obtained gain is 7.65 dB at frequency 6 GHz. The proposed antenna fulfills the frequency requirements for UWB application and 5G Application.","PeriodicalId":170627,"journal":{"name":"2019 IEEE Conference on Antenna Measurements & Applications (CAMA)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130534829","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 : 2019-10-01DOI: 10.1109/CAMA47423.2019.8959654
M. Taguchi
The ultra low profile inverted L antenna on a rectangular conducting plane is located above the lower conducting plane and numerically analyzed for the application of IoT. The coplanar waveguide is inserted within the antenna element. The antenna element is printed on the polyethylene terephthalate sheet. The shift of the resonant frequency of this antenna is small due to the existence of lower conducting plane. The influence of the existence of the lower conducting plane can be neglecting when the distance between the ULPIL antenna and the lower conducting plane is longer than 6 mm. Therefore the ULPIL antenna may be promising for the IoT antenna.
{"title":"Ultra Low Profile Inverted L Antenna Composed of CPW Printed on PET Sheet for IoT Application","authors":"M. Taguchi","doi":"10.1109/CAMA47423.2019.8959654","DOIUrl":"https://doi.org/10.1109/CAMA47423.2019.8959654","url":null,"abstract":"The ultra low profile inverted L antenna on a rectangular conducting plane is located above the lower conducting plane and numerically analyzed for the application of IoT. The coplanar waveguide is inserted within the antenna element. The antenna element is printed on the polyethylene terephthalate sheet. The shift of the resonant frequency of this antenna is small due to the existence of lower conducting plane. The influence of the existence of the lower conducting plane can be neglecting when the distance between the ULPIL antenna and the lower conducting plane is longer than 6 mm. Therefore the ULPIL antenna may be promising for the IoT antenna.","PeriodicalId":170627,"journal":{"name":"2019 IEEE Conference on Antenna Measurements & Applications (CAMA)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114963940","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 : 2019-10-01DOI: 10.1109/CAMA47423.2019.8959709
Hugo Girardon
Non-destructive testing is an essential tool to assess the safety of the facilities within nuclear plants. In particular, conductive deposits on U-tubes in steam generators constitute a major danger as they may block the cooling loop. To detect these deposits, eddy-current probes are introduced inside the U-tubes to generate currents and measuring back an impedance signal. Based on the work of [9], we develop a shape optimization technique with regularized gradient descent to invert these measurements and recover the deposit shape. To deal with the unknown, and possibly complex, topological nature of the latter, we propose to model it using a level set function as introduced in [8] and applied in [2] to shape optimization problems. The methodology is first validated on synthetic axisymmetric configurations and fast convergence is ensured by careful adaptation of the gradient steps and regularization parameters. Using the actual domain, from which the acquisitions are made, we then consider a more realistic modeling that incorporates the support plate and the presence of imperfections on the tube interior section. We employ in particular an asymptotic model to take into account these imperfections and treat them as additional unknowns in our inverse problem. A multi-objective optimization strategy, based on the use of different operating frequencies, is then developed to solve this problem. We shall present various numerical examples with synthetic data showing the viability of our approach.
{"title":"Shape Reconstruction of Deposits Inside a Steam Generator using Eddy Current Measurements","authors":"Hugo Girardon","doi":"10.1109/CAMA47423.2019.8959709","DOIUrl":"https://doi.org/10.1109/CAMA47423.2019.8959709","url":null,"abstract":"Non-destructive testing is an essential tool to assess the safety of the facilities within nuclear plants. In particular, conductive deposits on U-tubes in steam generators constitute a major danger as they may block the cooling loop. To detect these deposits, eddy-current probes are introduced inside the U-tubes to generate currents and measuring back an impedance signal. Based on the work of [9], we develop a shape optimization technique with regularized gradient descent to invert these measurements and recover the deposit shape. To deal with the unknown, and possibly complex, topological nature of the latter, we propose to model it using a level set function as introduced in [8] and applied in [2] to shape optimization problems. The methodology is first validated on synthetic axisymmetric configurations and fast convergence is ensured by careful adaptation of the gradient steps and regularization parameters. Using the actual domain, from which the acquisitions are made, we then consider a more realistic modeling that incorporates the support plate and the presence of imperfections on the tube interior section. We employ in particular an asymptotic model to take into account these imperfections and treat them as additional unknowns in our inverse problem. A multi-objective optimization strategy, based on the use of different operating frequencies, is then developed to solve this problem. We shall present various numerical examples with synthetic data showing the viability of our approach.","PeriodicalId":170627,"journal":{"name":"2019 IEEE Conference on Antenna Measurements & Applications (CAMA)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128770754","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 : 2019-10-01DOI: 10.1109/CAMA47423.2019.8959595
Galang Persada Hakim Syadia, Anggun Susila Ningsih, M. Alaydrus
Anticipating the potentials and the challenges of the millimeter wave regions, horn antennas in substrate integrated waveguide (SIW) are observed. The antennas are fed by an WR28 rectangular waveguide through a slotted transition to the SIW structure. A parameter study by variating the dimension of the rectangular slot was carried out to get optimal reflection characteristics. Afterwards, several geometry modifications, such as changing the opening of the horn, the flare length and adding some vias, are performed to study the characteristics of the antennas. The antennas have very good reflection characteristics at frequency 38 GHz and a simulated gain of around 7.5 dBi. Measurements with a vector network analyzer confirmed the results.
{"title":"Substrate Integrated Waveguide Horn Antennas at Millimeter Waves","authors":"Galang Persada Hakim Syadia, Anggun Susila Ningsih, M. Alaydrus","doi":"10.1109/CAMA47423.2019.8959595","DOIUrl":"https://doi.org/10.1109/CAMA47423.2019.8959595","url":null,"abstract":"Anticipating the potentials and the challenges of the millimeter wave regions, horn antennas in substrate integrated waveguide (SIW) are observed. The antennas are fed by an WR28 rectangular waveguide through a slotted transition to the SIW structure. A parameter study by variating the dimension of the rectangular slot was carried out to get optimal reflection characteristics. Afterwards, several geometry modifications, such as changing the opening of the horn, the flare length and adding some vias, are performed to study the characteristics of the antennas. The antennas have very good reflection characteristics at frequency 38 GHz and a simulated gain of around 7.5 dBi. Measurements with a vector network analyzer confirmed the results.","PeriodicalId":170627,"journal":{"name":"2019 IEEE Conference on Antenna Measurements & Applications (CAMA)","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124667629","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 : 2019-10-01DOI: 10.1109/CAMA47423.2019.8959810
Y. Oh, T. Jin, Sinmyong Park
This paper presents the examination of geophysical model functions for radar backscattering from sea surfaces. The LGMF (L-band geophysical model function), CMOD5 (C-band model 5), XMOD2 (X-band model 2), and Ku-SASS2 (Ku-band model based on the SeaSat-A satellite scatterometer) models corresponding to L-, C-, X-, and Ku-bands, are examined for their accuracies and compared each other in this study.
{"title":"Examination of Geophysical Model Functions for Microwave Backscattering from Sea Surfaces","authors":"Y. Oh, T. Jin, Sinmyong Park","doi":"10.1109/CAMA47423.2019.8959810","DOIUrl":"https://doi.org/10.1109/CAMA47423.2019.8959810","url":null,"abstract":"This paper presents the examination of geophysical model functions for radar backscattering from sea surfaces. The LGMF (L-band geophysical model function), CMOD5 (C-band model 5), XMOD2 (X-band model 2), and Ku-SASS2 (Ku-band model based on the SeaSat-A satellite scatterometer) models corresponding to L-, C-, X-, and Ku-bands, are examined for their accuracies and compared each other in this study.","PeriodicalId":170627,"journal":{"name":"2019 IEEE Conference on Antenna Measurements & Applications (CAMA)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126313577","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 : 2019-10-01DOI: 10.1109/CAMA47423.2019.8959594
N. Yang, K. Leung, Weiwei Li
A linearly polarized dielectric resonator (DR) antenna (DRA) with omnidirectional polarization diversity is presented in this paper. The dimensions of the DR should be chosen when the resonance frequencies of the TM01δand TE011+δmodes are the same. A circular patch with four short-circuited stubs are used to excite the TM mode without drilling any hole inside the DR. The TE mode is excited by four arc-shaped microstrip lines. A prototype was designed, fabricated, and measured. Good agreement can be observed between the simulated and measured results. The overlapping impedance bandwidth is measured as 8.1%. It should be mentioned that the proposed design is made of transparent glass, which could be easily integrated with optical applications.
{"title":"Linearly Polarized Omnidirectional Polarization-Diversity Dielectric Resonator Antenna","authors":"N. Yang, K. Leung, Weiwei Li","doi":"10.1109/CAMA47423.2019.8959594","DOIUrl":"https://doi.org/10.1109/CAMA47423.2019.8959594","url":null,"abstract":"A linearly polarized dielectric resonator (DR) antenna (DRA) with omnidirectional polarization diversity is presented in this paper. The dimensions of the DR should be chosen when the resonance frequencies of the TM01δand TE011+δmodes are the same. A circular patch with four short-circuited stubs are used to excite the TM mode without drilling any hole inside the DR. The TE mode is excited by four arc-shaped microstrip lines. A prototype was designed, fabricated, and measured. Good agreement can be observed between the simulated and measured results. The overlapping impedance bandwidth is measured as 8.1%. It should be mentioned that the proposed design is made of transparent glass, which could be easily integrated with optical applications.","PeriodicalId":170627,"journal":{"name":"2019 IEEE Conference on Antenna Measurements & Applications (CAMA)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127443563","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 : 2019-10-01DOI: 10.1109/CAMA47423.2019.8959656
Dian Widi Astuti, F. Zulkifli, E. Rahardjo
This paper presents an increase in bandwidth for Substate Integrated Waveguide (SIW) antenna backed by T-shape slot. T-shape slot produces a hybrid resonance mode between TE101 and TE102 modes in a rectangular cavity. Hybrid resonance will increase the impedance bandwidth three times than that of conventional SIW antennas. The antenna performance shows optimized S-parameters, gain and radiation pattern. 3% of fractional bandwidth simulation is achieved and proven by measurement results. Therefore the propose antenna is applicable to fifth generation wireless communications in the frequency range of 3.3-3.4 GHz.
{"title":"Bandwidth Enhancement of Substrate Integrated Waveguide Cavity Antenna using T-Backed Slot","authors":"Dian Widi Astuti, F. Zulkifli, E. Rahardjo","doi":"10.1109/CAMA47423.2019.8959656","DOIUrl":"https://doi.org/10.1109/CAMA47423.2019.8959656","url":null,"abstract":"This paper presents an increase in bandwidth for Substate Integrated Waveguide (SIW) antenna backed by T-shape slot. T-shape slot produces a hybrid resonance mode between TE101 and TE102 modes in a rectangular cavity. Hybrid resonance will increase the impedance bandwidth three times than that of conventional SIW antennas. The antenna performance shows optimized S-parameters, gain and radiation pattern. 3% of fractional bandwidth simulation is achieved and proven by measurement results. Therefore the propose antenna is applicable to fifth generation wireless communications in the frequency range of 3.3-3.4 GHz.","PeriodicalId":170627,"journal":{"name":"2019 IEEE Conference on Antenna Measurements & Applications (CAMA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126903485","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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