Pub Date : 2016-12-01DOI: 10.1109/APMC.2016.7931461
Rudraishwarya Banerjee, B. Rana, S. K. Parui
Here, a new ‘Bow-Tie’ shaped dielectric resonators (DRs) loaded monopole antenna, obtained by splitting a conical piece of DR into four equal quarters, that offers 132% impedance bandwidth (covering 3.7–17.6 GHz) with uniform monopole like radiation pattern over the entire bandwidth, and 6 dBi peak gain has been proposed.
{"title":"Stacked Bow-Tie shaped dielectric resonators loaded monopole antenna","authors":"Rudraishwarya Banerjee, B. Rana, S. K. Parui","doi":"10.1109/APMC.2016.7931461","DOIUrl":"https://doi.org/10.1109/APMC.2016.7931461","url":null,"abstract":"Here, a new ‘Bow-Tie’ shaped dielectric resonators (DRs) loaded monopole antenna, obtained by splitting a conical piece of DR into four equal quarters, that offers 132% impedance bandwidth (covering 3.7–17.6 GHz) with uniform monopole like radiation pattern over the entire bandwidth, and 6 dBi peak gain has been proposed.","PeriodicalId":166478,"journal":{"name":"2016 Asia-Pacific Microwave Conference (APMC)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123170630","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 : 2016-12-01DOI: 10.1109/APMC.2016.7931380
Yahui Wu, R. Gajaweera, J. Everard
This paper demonstrates the realization of a dual-band bandpass filter using TE01δ mode quarter cylindrical dielectric resonators. Resonator characteristics and coupling structures are illustrated as well as coupling matrix synthesis that used to realize the dual-band response. A sixth order dual-band bandpass filter was designed, simulated, and fabricated. The simulated response shows passbands at 2.565 GHz and 2.630 GHz with 3-dB bandwidth of 28 MHz and 35 MHz, respectively. It is a very compact filter without any supporting structure whereas it has good thermal resistance, relatively large power handling capability, and high performance characteristics. It can be employed in microcell/picocell LTE and 5G base stations.
{"title":"Dual-band bandpass filter using TE01δ mode quarter cylindrical dielectric resonators","authors":"Yahui Wu, R. Gajaweera, J. Everard","doi":"10.1109/APMC.2016.7931380","DOIUrl":"https://doi.org/10.1109/APMC.2016.7931380","url":null,"abstract":"This paper demonstrates the realization of a dual-band bandpass filter using TE01δ mode quarter cylindrical dielectric resonators. Resonator characteristics and coupling structures are illustrated as well as coupling matrix synthesis that used to realize the dual-band response. A sixth order dual-band bandpass filter was designed, simulated, and fabricated. The simulated response shows passbands at 2.565 GHz and 2.630 GHz with 3-dB bandwidth of 28 MHz and 35 MHz, respectively. It is a very compact filter without any supporting structure whereas it has good thermal resistance, relatively large power handling capability, and high performance characteristics. It can be employed in microcell/picocell LTE and 5G base stations.","PeriodicalId":166478,"journal":{"name":"2016 Asia-Pacific Microwave Conference (APMC)","volume":"117 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116797938","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 : 2016-12-01DOI: 10.1109/APMC.2016.7931468
Vivek Kumar Pandit, A. Harish
A compact co-planar waveguide (CPW) fed triple band monopole antenna for WLAN/WiMAX application is proposed. The proposed antenna consists of two inverted L-shaped slots and a V-shaped slots etched in a trapezoid shaped monopole attached to a CPW feed line. The antenna operates in the 2.4/5.2/5.8 GHz WLAN bands and 3.5/5.5 GHz WiMAX bands and has a compact size of 21×24 mm2. In addition, the proposed antenna achieves good radiation pattern and stable gain over the specified bands. The antenna has been fabricated and tested and the measured results agree well with the simulation results.
{"title":"A compact CPW-fed triple band monopole antenna for WLAN/WiMAX applications","authors":"Vivek Kumar Pandit, A. Harish","doi":"10.1109/APMC.2016.7931468","DOIUrl":"https://doi.org/10.1109/APMC.2016.7931468","url":null,"abstract":"A compact co-planar waveguide (CPW) fed triple band monopole antenna for WLAN/WiMAX application is proposed. The proposed antenna consists of two inverted L-shaped slots and a V-shaped slots etched in a trapezoid shaped monopole attached to a CPW feed line. The antenna operates in the 2.4/5.2/5.8 GHz WLAN bands and 3.5/5.5 GHz WiMAX bands and has a compact size of 21×24 mm2. In addition, the proposed antenna achieves good radiation pattern and stable gain over the specified bands. The antenna has been fabricated and tested and the measured results agree well with the simulation results.","PeriodicalId":166478,"journal":{"name":"2016 Asia-Pacific Microwave Conference (APMC)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121119135","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 : 2016-12-01DOI: 10.1109/APMC.2016.7931492
Wg Cdr Sumit Sharma, H. Kumar, G. Kumar
A single feed dual band circularly polarized stub loaded tunable microstrip patch antenna operating at S-band has been designed and fabricated. The antenna is designed for center frequencies of 2.23 GHz and 3.85 GHz. Paper also present two more designs to make the antenna compact without much alteration in the results. The proposed antenna configuration is designed using IE3D simulation software. Antenna is designed on Arlon substrate having dielectric constant (εr) = 2.55, loss tangent (tan δ) = 0.001 and thickness = 1.6 mm. An Axial ratio of less than 2 dB is achieved at both the frequencies. Simulated and measured results are in good agreement.
{"title":"Single feed dual band circularly polarized stub loaded tunable microstrip patch antenna","authors":"Wg Cdr Sumit Sharma, H. Kumar, G. Kumar","doi":"10.1109/APMC.2016.7931492","DOIUrl":"https://doi.org/10.1109/APMC.2016.7931492","url":null,"abstract":"A single feed dual band circularly polarized stub loaded tunable microstrip patch antenna operating at S-band has been designed and fabricated. The antenna is designed for center frequencies of 2.23 GHz and 3.85 GHz. Paper also present two more designs to make the antenna compact without much alteration in the results. The proposed antenna configuration is designed using IE3D simulation software. Antenna is designed on Arlon substrate having dielectric constant (εr) = 2.55, loss tangent (tan δ) = 0.001 and thickness = 1.6 mm. An Axial ratio of less than 2 dB is achieved at both the frequencies. Simulated and measured results are in good agreement.","PeriodicalId":166478,"journal":{"name":"2016 Asia-Pacific Microwave Conference (APMC)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126050505","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 : 2016-12-01DOI: 10.1109/APMC.2016.7931400
J. Jadhav, P. Deore
A compact bandpass filter having an ultra wide pass band (UWB − 3.1 to 10.6 GHz) is proposed. It is based on hybrid microstrip coplanar waveguide (dual sided metal) structure. A Multiple Resonant Structure (MRS) is constructed using coplanar waveguide (CPW) planar transmission line. The MRS makes the resonance using quarter wavelength and half wavelength open ended CPW. The equispaced three resonances at lower edge (3.1 GHz), center (6.85 GHz) and higher edge (10.6 GHz) of the whole Ultra Wide Band are achieved using CPW MRS. To make the band as flat as possible, two more resonances are introduced using quarter wavelength microstrip patches on top of commonly shared substrate, so the proposed filter becomes a five pole bandpass filter. A dumb-bell shaped defected ground structure on either side of CPW MRS improves the return loss almost less than −20 dB over the whole UWB passband. The simulated results of proposed filter shows good transmission response within passband and good rejection in out of band. The measured results agree well with the simulated ones.
{"title":"A compact planar ultra-wideband bandpass filter based on Multiple Resonant and defected ground Structure","authors":"J. Jadhav, P. Deore","doi":"10.1109/APMC.2016.7931400","DOIUrl":"https://doi.org/10.1109/APMC.2016.7931400","url":null,"abstract":"A compact bandpass filter having an ultra wide pass band (UWB − 3.1 to 10.6 GHz) is proposed. It is based on hybrid microstrip coplanar waveguide (dual sided metal) structure. A Multiple Resonant Structure (MRS) is constructed using coplanar waveguide (CPW) planar transmission line. The MRS makes the resonance using quarter wavelength and half wavelength open ended CPW. The equispaced three resonances at lower edge (3.1 GHz), center (6.85 GHz) and higher edge (10.6 GHz) of the whole Ultra Wide Band are achieved using CPW MRS. To make the band as flat as possible, two more resonances are introduced using quarter wavelength microstrip patches on top of commonly shared substrate, so the proposed filter becomes a five pole bandpass filter. A dumb-bell shaped defected ground structure on either side of CPW MRS improves the return loss almost less than −20 dB over the whole UWB passband. The simulated results of proposed filter shows good transmission response within passband and good rejection in out of band. The measured results agree well with the simulated ones.","PeriodicalId":166478,"journal":{"name":"2016 Asia-Pacific Microwave Conference (APMC)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116578028","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 : 2016-12-01DOI: 10.1109/APMC.2016.7931491
S. Bhattacharjee, M. Midya, M. Mitra, S. R. Bhadra Chaudhuri
In this paper meander line antenna integrated with AMC based ground plane is investigated. The designed antenna has a wide bandwidth (5.16–5.92) GHZ covering the upper ISM band (5.725–5.875) GHz along with the Wi-Fi and Wi-Max bands. Inclusion of the designed AMC unit cell is capable of enhancing the bandwidth to a good extent and reducing the Specific Absorption Rate (SAR) to 66.8% over the PEC backed MLA antenna. The proposed antenna is expected to be a good candidate for wearable applications.
{"title":"Performance enhancement of meander line antenna with AMC ground for wearable applications","authors":"S. Bhattacharjee, M. Midya, M. Mitra, S. R. Bhadra Chaudhuri","doi":"10.1109/APMC.2016.7931491","DOIUrl":"https://doi.org/10.1109/APMC.2016.7931491","url":null,"abstract":"In this paper meander line antenna integrated with AMC based ground plane is investigated. The designed antenna has a wide bandwidth (5.16–5.92) GHZ covering the upper ISM band (5.725–5.875) GHz along with the Wi-Fi and Wi-Max bands. Inclusion of the designed AMC unit cell is capable of enhancing the bandwidth to a good extent and reducing the Specific Absorption Rate (SAR) to 66.8% over the PEC backed MLA antenna. The proposed antenna is expected to be a good candidate for wearable applications.","PeriodicalId":166478,"journal":{"name":"2016 Asia-Pacific Microwave Conference (APMC)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114463189","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 : 2016-12-01DOI: 10.1109/APMC.2016.7931360
S. Vishwakarma, S. S. Ram
Micro-Doppler signatures of dynamic indoor targets (such as humans and fans) serve as a useful tool for classification. However, all the current classification methods are limited by the assumption that only a single target is present in the channel. In this work, we propose a method to classify multiple targets that are simultaneously present in the channel on the basis of a single channel source separation technique. We apply sparse coding based dictionary learning (DL) algorithms for disaggregating micro-Doppler returns from multiple targets into its constituent signals. The classification is subsequently carried out on the disaggregated signals. We have tested the performance of the proposed algorithm on simulated human and fan data.
{"title":"Classification of multiple targets based on disaggregation of Micro-Doppler signatures","authors":"S. Vishwakarma, S. S. Ram","doi":"10.1109/APMC.2016.7931360","DOIUrl":"https://doi.org/10.1109/APMC.2016.7931360","url":null,"abstract":"Micro-Doppler signatures of dynamic indoor targets (such as humans and fans) serve as a useful tool for classification. However, all the current classification methods are limited by the assumption that only a single target is present in the channel. In this work, we propose a method to classify multiple targets that are simultaneously present in the channel on the basis of a single channel source separation technique. We apply sparse coding based dictionary learning (DL) algorithms for disaggregating micro-Doppler returns from multiple targets into its constituent signals. The classification is subsequently carried out on the disaggregated signals. We have tested the performance of the proposed algorithm on simulated human and fan data.","PeriodicalId":166478,"journal":{"name":"2016 Asia-Pacific Microwave Conference (APMC)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129578183","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 : 2016-12-01DOI: 10.1109/APMC.2016.7931390
Laxman Prasad Goswami, Anirban Sarkar, A. Biswas
In this paper, 1 × 2 Y-type and 1 × 4 cascaded SIW power divider based phase shifters are presented at X-band. The proposed phase shifters consist of a SIW section with rows of metallic posts used for phase shifting are inserted at the output ports. The proper phase shifting in this configuration is achieved by changing the diameter and position of these metallic posts. There is a shift in the region of operation of the phase shifter as the diameter and the position of the via changes. The proposed geometry is designed and optimized by numerical simulations (HFSS) and fabricated prototype is validated through experiments. Simulated and measured results of proposed structures are in good agreement. For two output phase shifter consecutive ports have the phase shift of 152° and for four output of 40° are achieved. The S11 is below −15 dB over the frequency band of 9.5 to 11.4 GHz with the percentage bandwidth of 17% is obtained.
{"title":"Design and implementation of SIW based multiple output X-band phase shifters","authors":"Laxman Prasad Goswami, Anirban Sarkar, A. Biswas","doi":"10.1109/APMC.2016.7931390","DOIUrl":"https://doi.org/10.1109/APMC.2016.7931390","url":null,"abstract":"In this paper, 1 × 2 Y-type and 1 × 4 cascaded SIW power divider based phase shifters are presented at X-band. The proposed phase shifters consist of a SIW section with rows of metallic posts used for phase shifting are inserted at the output ports. The proper phase shifting in this configuration is achieved by changing the diameter and position of these metallic posts. There is a shift in the region of operation of the phase shifter as the diameter and the position of the via changes. The proposed geometry is designed and optimized by numerical simulations (HFSS) and fabricated prototype is validated through experiments. Simulated and measured results of proposed structures are in good agreement. For two output phase shifter consecutive ports have the phase shift of 152° and for four output of 40° are achieved. The S11 is below −15 dB over the frequency band of 9.5 to 11.4 GHz with the percentage bandwidth of 17% is obtained.","PeriodicalId":166478,"journal":{"name":"2016 Asia-Pacific Microwave Conference (APMC)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128528304","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 : 2016-12-01DOI: 10.1109/APMC.2016.7931322
M. Kido, S. Kawasaki, A. Shibuya, K. Yamada, T. Ogasawara, T. Suzuki, S. Tamura, K. Seino, A. Ichikawa, A. Tsuchiko
100W C-band gallium nitride solid state power amplifier (GaN SSPA) was developed for satellite use. GaN SSPA has already been applied to various fields such as ground stations and radar systems. Mitsubishi Electric TOKKI Systems (MELOS) had succeeded in developing 150W S-band GaN SSPA and 70W C-band GaN SSPA for satellite use in the past. Based on these development results of the GaN SSPA, MELOS further developed a 100W C-Band GaN SSPA with power added efficiency (PAE) of 50%. In order to achieve higher power and efficiency, MELOS selected a new GaN device and optimized the matching circuit and improved the efficiency of electrical power conditioner (EPC). Furthermore, MELOS adopted MMICs in the RF Low Power Section and optimized the chassis to reduce size. Development result showed that, together with EPC, the GaN SSPA achieved an output power of 119.3W max with PAE of 53.4% max. The mass was 1.45 kg and environment tests at QT level proved that the GaN SSPA is applicable to space use. To the best of our knowledge, the GaN SSPA in this study achieves the highest PAE of C-band GaN SSPA ever reported over 100 W output power. MELOS will continue to pursue further its potential capabilities.
{"title":"100W C-band GaN solid state power amplifier with 50% PAE for satellite use","authors":"M. Kido, S. Kawasaki, A. Shibuya, K. Yamada, T. Ogasawara, T. Suzuki, S. Tamura, K. Seino, A. Ichikawa, A. Tsuchiko","doi":"10.1109/APMC.2016.7931322","DOIUrl":"https://doi.org/10.1109/APMC.2016.7931322","url":null,"abstract":"100W C-band gallium nitride solid state power amplifier (GaN SSPA) was developed for satellite use. GaN SSPA has already been applied to various fields such as ground stations and radar systems. Mitsubishi Electric TOKKI Systems (MELOS) had succeeded in developing 150W S-band GaN SSPA and 70W C-band GaN SSPA for satellite use in the past. Based on these development results of the GaN SSPA, MELOS further developed a 100W C-Band GaN SSPA with power added efficiency (PAE) of 50%. In order to achieve higher power and efficiency, MELOS selected a new GaN device and optimized the matching circuit and improved the efficiency of electrical power conditioner (EPC). Furthermore, MELOS adopted MMICs in the RF Low Power Section and optimized the chassis to reduce size. Development result showed that, together with EPC, the GaN SSPA achieved an output power of 119.3W max with PAE of 53.4% max. The mass was 1.45 kg and environment tests at QT level proved that the GaN SSPA is applicable to space use. To the best of our knowledge, the GaN SSPA in this study achieves the highest PAE of C-band GaN SSPA ever reported over 100 W output power. MELOS will continue to pursue further its potential capabilities.","PeriodicalId":166478,"journal":{"name":"2016 Asia-Pacific Microwave Conference (APMC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129006068","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 : 2016-12-01DOI: 10.1109/APMC.2016.7931279
P. Jha, A. Basu, S. Koul
This paper describes the design and fabrication of broadband frequency tripler in U-band (40–60 GHz) using anti-parallel beam lead Schottky barrier diodes MGS901 from Aeroflex Metelics. The whole circuit is constructed on suspended stripline technology and mounted in a waveguide block that includes matching elements in the input side. The circuit design, simulation and optimization of frequency tripler are carried out using HFSS (High Frequency Structure Simulator) and ADS (Advanced Design System) based on co-simulation technique. The measured conversion loss varies from 17–28 dB in 40–60 GHz band at an input power of 15 dBm. The lowest measured conversion loss is 17 dB at 40 GHz and the highest is 28 dB at 51 GHz, 54 GHz and 60 GHz. This circuit can be used in point-to-point mobile backhaul network, low power short range communication system, airborne communication, distribution of video streaming around home and telemedicine.
{"title":"Broadband frequency tripler design at 40–60 GHz","authors":"P. Jha, A. Basu, S. Koul","doi":"10.1109/APMC.2016.7931279","DOIUrl":"https://doi.org/10.1109/APMC.2016.7931279","url":null,"abstract":"This paper describes the design and fabrication of broadband frequency tripler in U-band (40–60 GHz) using anti-parallel beam lead Schottky barrier diodes MGS901 from Aeroflex Metelics. The whole circuit is constructed on suspended stripline technology and mounted in a waveguide block that includes matching elements in the input side. The circuit design, simulation and optimization of frequency tripler are carried out using HFSS (High Frequency Structure Simulator) and ADS (Advanced Design System) based on co-simulation technique. The measured conversion loss varies from 17–28 dB in 40–60 GHz band at an input power of 15 dBm. The lowest measured conversion loss is 17 dB at 40 GHz and the highest is 28 dB at 51 GHz, 54 GHz and 60 GHz. This circuit can be used in point-to-point mobile backhaul network, low power short range communication system, airborne communication, distribution of video streaming around home and telemedicine.","PeriodicalId":166478,"journal":{"name":"2016 Asia-Pacific Microwave Conference (APMC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129161846","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：