Pub Date : 2021-10-06DOI: 10.1109/RFID-TA53372.2021.9617303
Víctor Toral, J. F. Salmerón, D. Morales, N. Rodríguez, Encarnación Castillo, A. Rivadeneyra
This paper presents a RFID based device for biosensing. Using flexible tags based in LC tank whose resonant frequency is in the RFID band is possible to measure different biosensing parameters. The tags change its capacitance depending on different substances. With this change, the resonant frequency varies which is measured with the RFID reader presented in this paper. The device is based in a Colpitts oscillator and the measure is done through the power consumption of it.
{"title":"Readout Portable System For Wireless Chipless Biosensing","authors":"Víctor Toral, J. F. Salmerón, D. Morales, N. Rodríguez, Encarnación Castillo, A. Rivadeneyra","doi":"10.1109/RFID-TA53372.2021.9617303","DOIUrl":"https://doi.org/10.1109/RFID-TA53372.2021.9617303","url":null,"abstract":"This paper presents a RFID based device for biosensing. Using flexible tags based in LC tank whose resonant frequency is in the RFID band is possible to measure different biosensing parameters. The tags change its capacitance depending on different substances. With this change, the resonant frequency varies which is measured with the RFID reader presented in this paper. The device is based in a Colpitts oscillator and the measure is done through the power consumption of it.","PeriodicalId":212607,"journal":{"name":"2021 IEEE International Conference on RFID Technology and Applications (RFID-TA)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133795249","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 : 2021-10-06DOI: 10.1109/RFID-TA53372.2021.9617385
G. M. Bianco, N. Panunzio, Antonio Pintaudi, Salvatore Santamaria, Francesco Faustino, C. Occhiuzzi, G. Marrocco
The equipment management of police departments is usually carried out manually, causing delays and issues as missing items or wrong assignments. Improvements can come from radiofrequency identification (RFID), successfully employed worldwide for inventory management. The use of IoT (internet of things) systems to make police forces equipment management more efficient is currently under research. This contribution summarizes a feasibility study on the employment of COTS RFID systems on several kinds of equipment comprising both laboratory and in-situ tests. Effective tag types and integration positions are experimentally selected. Overall, the use of RFID for police equipment management is promising, and the measured reading distances span from 0.6 m to 16.1 m.
{"title":"RFID Labeling of Police Equipment","authors":"G. M. Bianco, N. Panunzio, Antonio Pintaudi, Salvatore Santamaria, Francesco Faustino, C. Occhiuzzi, G. Marrocco","doi":"10.1109/RFID-TA53372.2021.9617385","DOIUrl":"https://doi.org/10.1109/RFID-TA53372.2021.9617385","url":null,"abstract":"The equipment management of police departments is usually carried out manually, causing delays and issues as missing items or wrong assignments. Improvements can come from radiofrequency identification (RFID), successfully employed worldwide for inventory management. The use of IoT (internet of things) systems to make police forces equipment management more efficient is currently under research. This contribution summarizes a feasibility study on the employment of COTS RFID systems on several kinds of equipment comprising both laboratory and in-situ tests. Effective tag types and integration positions are experimentally selected. Overall, the use of RFID for police equipment management is promising, and the measured reading distances span from 0.6 m to 16.1 m.","PeriodicalId":212607,"journal":{"name":"2021 IEEE International Conference on RFID Technology and Applications (RFID-TA)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114863212","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 : 2021-10-06DOI: 10.1109/RFID-TA53372.2021.9617421
M. Schütz
This work studies RF (radio frequency) harvesting of electromagnetic energy from intentionally generated wireless RF signals in the 2.4 GHz ISM band as power supply for a battery-less back-scattering transponder. According to our implementation, a first mobile telephone transmits a quasi-continuous Bluetooth advertizing signal and the transponder scatters and modulates this signal such that it is receivable by a Bluetooth receiver of a further mobile telephone. The scattering process includes 4 MHz frequency translation and frequency shift keying for information transmission. The modulation process is controlled by a low energy micro-controller, which obtains its operational energy from a RF harvesting circuit that accumulates energy from the incident RF signals. The low energy transfer of Bluetooth signals motivates the present feasibility study, which proposes a supplement of WLAN signals as additional source of energy for the battery-less transponder. The present study includes examining alternative WLAN modes: ”tethering”, ”WiFi direct” and ”ad hoc” and concludes that an Android specific form of WLAN tethering shows the most promising potential for our scattering application, which is based on regular, unmodified mobile telephones. Thus, by additionally using WLAN signals, we achieved a significant range improvement of the wireless energy transfer from the transmitting mobile telephone to the battery-less transponder, which encourages further endeavors in this direction.
{"title":"RF Harvesting at 2.4 GHz for Scattering between Battery-less Transponder and Mobile Telephones","authors":"M. Schütz","doi":"10.1109/RFID-TA53372.2021.9617421","DOIUrl":"https://doi.org/10.1109/RFID-TA53372.2021.9617421","url":null,"abstract":"This work studies RF (radio frequency) harvesting of electromagnetic energy from intentionally generated wireless RF signals in the 2.4 GHz ISM band as power supply for a battery-less back-scattering transponder. According to our implementation, a first mobile telephone transmits a quasi-continuous Bluetooth advertizing signal and the transponder scatters and modulates this signal such that it is receivable by a Bluetooth receiver of a further mobile telephone. The scattering process includes 4 MHz frequency translation and frequency shift keying for information transmission. The modulation process is controlled by a low energy micro-controller, which obtains its operational energy from a RF harvesting circuit that accumulates energy from the incident RF signals. The low energy transfer of Bluetooth signals motivates the present feasibility study, which proposes a supplement of WLAN signals as additional source of energy for the battery-less transponder. The present study includes examining alternative WLAN modes: ”tethering”, ”WiFi direct” and ”ad hoc” and concludes that an Android specific form of WLAN tethering shows the most promising potential for our scattering application, which is based on regular, unmodified mobile telephones. Thus, by additionally using WLAN signals, we achieved a significant range improvement of the wireless energy transfer from the transmitting mobile telephone to the battery-less transponder, which encourages further endeavors in this direction.","PeriodicalId":212607,"journal":{"name":"2021 IEEE International Conference on RFID Technology and Applications (RFID-TA)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120985708","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 : 2021-10-06DOI: 10.1109/RFID-TA53372.2021.9617405
U. Sharma, Garima Srivastava, M. K. Khandelwal
A small MIMO circularly polarized antenna with a 56 x 60 x 1.5748 mm3 is designed for UHF RFID, PCS and 5G applications. The C and E-shaped slots are created along with the meander line at both the sides of the antenna to bring resonance for frequency bands from 0.7–1GHz, 1.6–2.48 GHz and 3.5–4.2 GHz. DGS technique is also used to enhance the performance and lowers the mutual coupling between the radiating elements. A ‘T’ shape stub is placed above the antenna for better impedance matching. The antenna offers good isolation of 15 dB, 20 dB and 29 dB for the respective bands. The diversity parameters like ECC, DG, TARC, MEG and radiation pattern are simulated using Ansys HFSS software. The axial ratio is less than 3 dB for UHF RFID and 5G bands. This proposed antenna assures good MIMO antenna results for wireless applications.
小型MIMO圆极化天线尺寸为56 x 60 x 1.5748 mm3，专为UHF RFID, pc和5G应用而设计。C型和e型槽沿着天线两侧的弯曲线形成，为0.7-1GHz、1.6-2.48 GHz和3.5-4.2 GHz频段带来共振。DGS技术也被用于提高性能和降低辐射元件之间的相互耦合。为了更好地匹配阻抗，在天线上方放置一个“T”形短段。该天线为各自的频段提供了15 dB、20 dB和29 dB的良好隔离。利用Ansys HFSS软件对分集参数ECC、DG、TARC、MEG和辐射方向图进行仿真。UHF RFID和5G频段的轴比小于3db。该天线保证了无线应用中良好的MIMO天线效果。
{"title":"Small MIMO Antenna with Circular Polarization for UHF RFID, PCS and 5G Applications","authors":"U. Sharma, Garima Srivastava, M. K. Khandelwal","doi":"10.1109/RFID-TA53372.2021.9617405","DOIUrl":"https://doi.org/10.1109/RFID-TA53372.2021.9617405","url":null,"abstract":"A small MIMO circularly polarized antenna with a 56 x 60 x 1.5748 mm3 is designed for UHF RFID, PCS and 5G applications. The C and E-shaped slots are created along with the meander line at both the sides of the antenna to bring resonance for frequency bands from 0.7–1GHz, 1.6–2.48 GHz and 3.5–4.2 GHz. DGS technique is also used to enhance the performance and lowers the mutual coupling between the radiating elements. A ‘T’ shape stub is placed above the antenna for better impedance matching. The antenna offers good isolation of 15 dB, 20 dB and 29 dB for the respective bands. The diversity parameters like ECC, DG, TARC, MEG and radiation pattern are simulated using Ansys HFSS software. The axial ratio is less than 3 dB for UHF RFID and 5G bands. This proposed antenna assures good MIMO antenna results for wireless applications.","PeriodicalId":212607,"journal":{"name":"2021 IEEE International Conference on RFID Technology and Applications (RFID-TA)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115862013","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 : 2021-10-06DOI: 10.1109/RFID-TA53372.2021.9617243
Tarik Lassouaoui, F. Hutu, G. Villemaud, Y. Duroc
In this paper, the performance evaluation of the tag to tag (T2T) communications using UHF (Ultra High Frequency) passive RFID (Radio Frequency Identification) tags is tackled. The T2T communication system is performed directly between a reader tag (RT) and a listener tag (LT) in the presence of an external electromagnetic (EM) field. Consequently, this kind of communication system implies the use of low RF signal levels, which makes it very sensitive to the noise, to the arrangement between the tags (i.e. spacing, tilt and shift) but also to the position of the source. The performance evaluation of this communication system is based on the study of the modulation depth, an indicator of the separation between the two modulation states and, indirectly, of the T2T communication quality. Considering scenarios in which the two tags are in the same plane but with the RT tilted and staggered with respect to the LT, our study demonstrates that the modulation depth can be kept higher for different separations between the tags by choosing the proper angle of incidence of the RF source with respect to the tag’s plane. The proposed approach is studied through electromagnetic simulations and the obtained results are confronted with measurements.
{"title":"Modulation Depth Enhancement for Randomly Arranged Tags in Passive RFID Tag to Tag Communications","authors":"Tarik Lassouaoui, F. Hutu, G. Villemaud, Y. Duroc","doi":"10.1109/RFID-TA53372.2021.9617243","DOIUrl":"https://doi.org/10.1109/RFID-TA53372.2021.9617243","url":null,"abstract":"In this paper, the performance evaluation of the tag to tag (T2T) communications using UHF (Ultra High Frequency) passive RFID (Radio Frequency Identification) tags is tackled. The T2T communication system is performed directly between a reader tag (RT) and a listener tag (LT) in the presence of an external electromagnetic (EM) field. Consequently, this kind of communication system implies the use of low RF signal levels, which makes it very sensitive to the noise, to the arrangement between the tags (i.e. spacing, tilt and shift) but also to the position of the source. The performance evaluation of this communication system is based on the study of the modulation depth, an indicator of the separation between the two modulation states and, indirectly, of the T2T communication quality. Considering scenarios in which the two tags are in the same plane but with the RT tilted and staggered with respect to the LT, our study demonstrates that the modulation depth can be kept higher for different separations between the tags by choosing the proper angle of incidence of the RF source with respect to the tag’s plane. The proposed approach is studied through electromagnetic simulations and the obtained results are confronted with measurements.","PeriodicalId":212607,"journal":{"name":"2021 IEEE International Conference on RFID Technology and Applications (RFID-TA)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127554176","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 : 2021-10-06DOI: 10.1109/RFID-TA53372.2021.9617262
Ishita Aggarwal, M. Tripathy, S. Pandey, A. Mittal
In this article, we present implementation of a flower shaped microstrip antenna for the radio frequency identification (RFID). The compact antenna has a flower shaped radiator which is fed by microstrip feedline and is placed on FR4 substrate. The fractal slots are introduced in the radiator to get better impedance matching, and more impedance bandwidth. The impedance bandwidth of the antenna ranges from 1.88 GHz to 7 GHz (S11 <=-10dB). The proposed antenna provides good impedance matching with omnidirectional radiation patterns. The simulation analysis is performed by HFSS’13.
{"title":"A Flower shaped Printed wideband monopole antenna for RFID applications","authors":"Ishita Aggarwal, M. Tripathy, S. Pandey, A. Mittal","doi":"10.1109/RFID-TA53372.2021.9617262","DOIUrl":"https://doi.org/10.1109/RFID-TA53372.2021.9617262","url":null,"abstract":"In this article, we present implementation of a flower shaped microstrip antenna for the radio frequency identification (RFID). The compact antenna has a flower shaped radiator which is fed by microstrip feedline and is placed on FR4 substrate. The fractal slots are introduced in the radiator to get better impedance matching, and more impedance bandwidth. The impedance bandwidth of the antenna ranges from 1.88 GHz to 7 GHz (S11 <=-10dB). The proposed antenna provides good impedance matching with omnidirectional radiation patterns. The simulation analysis is performed by HFSS’13.","PeriodicalId":212607,"journal":{"name":"2021 IEEE International Conference on RFID Technology and Applications (RFID-TA)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127120125","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 : 2021-10-06DOI: 10.1109/RFID-TA53372.2021.9617250
Shivani Sharma, M. Tripathy, A. Sharma
In the proposed work, a compact Circularly Polarized (C.P.) Radio Frequency Identification (RFID) antenna has been designed for global microwave bands, i.e., 2.4 GHz and 5.8 GHz for wearable wireless applications. To achieve circular polarization, traditional truncated opposite corners of the patch are introduced, resulting in an orthogonal electric field in the X and Y direction. Another truncated square slot patch miniaturizes the antenna, provides a dual band frequency response and the patch is finally placed on flexible wearable dielectric material. The Defective Ground Structure (DGS) is used to enhance the designed antenna's gain and bandwidth. The simulation result shows the radiated gain of 6.5 dBi at 2.4 GHz and 10dBi at 5.8 GHz. For better impedance matching, the return loss (S11) of −19.5 dB at 2.4 GHz and −45 dB at 5.8 GHz is achieved. The antenna is circularly polarized with an axial ratio bandwidth below 3dB for the wide range reading of RFID tags. The designed antenna provides better isolation to the Electromagnetic Interference (EMI) caused due to adjacent frequencies since it radiates at two frequencies only.
{"title":"Dual-band circularly polarized wearable patch antenna for RFID Reader","authors":"Shivani Sharma, M. Tripathy, A. Sharma","doi":"10.1109/RFID-TA53372.2021.9617250","DOIUrl":"https://doi.org/10.1109/RFID-TA53372.2021.9617250","url":null,"abstract":"In the proposed work, a compact Circularly Polarized (C.P.) Radio Frequency Identification (RFID) antenna has been designed for global microwave bands, i.e., 2.4 GHz and 5.8 GHz for wearable wireless applications. To achieve circular polarization, traditional truncated opposite corners of the patch are introduced, resulting in an orthogonal electric field in the X and Y direction. Another truncated square slot patch miniaturizes the antenna, provides a dual band frequency response and the patch is finally placed on flexible wearable dielectric material. The Defective Ground Structure (DGS) is used to enhance the designed antenna's gain and bandwidth. The simulation result shows the radiated gain of 6.5 dBi at 2.4 GHz and 10dBi at 5.8 GHz. For better impedance matching, the return loss (S11) of −19.5 dB at 2.4 GHz and −45 dB at 5.8 GHz is achieved. The antenna is circularly polarized with an axial ratio bandwidth below 3dB for the wide range reading of RFID tags. The designed antenna provides better isolation to the Electromagnetic Interference (EMI) caused due to adjacent frequencies since it radiates at two frequencies only.","PeriodicalId":212607,"journal":{"name":"2021 IEEE International Conference on RFID Technology and Applications (RFID-TA)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121525298","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 : 2021-10-06DOI: 10.1109/RFID-TA53372.2021.9617351
F. Chietera, R. Colella, Akash Verma, E. Ferraris, C. E. Corcione, L. Catarinucci
In this work, two promising Additive Manufacturing (AM)/3D-printing technologies, enable to realize conductive elements, are analysed, and compared with respect to the realisation of RFID applications. The selected techniques are the Fused Filament Fabrication (FFF) and Aerosol Jet® Printing (AJ® P), which have been compared, for the first time, by measuring the performance of an UHF RFID tag, specifically designed and realized for the scope. Results have also been analysed against to data obtained by a reference sample realized using the well-known technique of shaping an aluminium adhesive foil with a cutting plotter. While the resulting FFF-made tag can be read up to maximum 3 meters, the AJ® P one can be read up to 7 meters. Despite having major differences in terms of performance, this work demonstrates that both the technologies are capable to realize functional RFID prototypes.
{"title":"Fully 3D-printed UHF RFID Antennas: Technological Comparison to Realize Conductive Elements","authors":"F. Chietera, R. Colella, Akash Verma, E. Ferraris, C. E. Corcione, L. Catarinucci","doi":"10.1109/RFID-TA53372.2021.9617351","DOIUrl":"https://doi.org/10.1109/RFID-TA53372.2021.9617351","url":null,"abstract":"In this work, two promising Additive Manufacturing (AM)/3D-printing technologies, enable to realize conductive elements, are analysed, and compared with respect to the realisation of RFID applications. The selected techniques are the Fused Filament Fabrication (FFF) and Aerosol Jet® Printing (AJ® P), which have been compared, for the first time, by measuring the performance of an UHF RFID tag, specifically designed and realized for the scope. Results have also been analysed against to data obtained by a reference sample realized using the well-known technique of shaping an aluminium adhesive foil with a cutting plotter. While the resulting FFF-made tag can be read up to maximum 3 meters, the AJ® P one can be read up to 7 meters. Despite having major differences in terms of performance, this work demonstrates that both the technologies are capable to realize functional RFID prototypes.","PeriodicalId":212607,"journal":{"name":"2021 IEEE International Conference on RFID Technology and Applications (RFID-TA)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124770466","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 : 2021-10-06DOI: 10.1109/RFID-TA53372.2021.9617417
Shivani Sharma, M. Tripathy, A. Sharma
In the proposed work, a passive Radio Frequency {Identification (RFID) reader antenna operating for Ultra High Frequency (UHF) have been designed for wireless applications in Wireless Body Area Networks (WBAN). The proposed antenna is simulated on wearable material with low dielectric and low power dissipation for better bending strength. The radiating gain and directivity of the proposed RFID antenna are improved using a thin sheet of Frequency Selective Surface (FSS) above the radiating patch. The designed UHF RFID antenna radiates a high gain of 10 dB at 880 MHz with a bandwidth of 200 MHz. The measured return loss (S11) is -27 dB with the VSWR of 1.08. The antenna radiates for a long reading range of approximately 10m and provides better isolation to the Electromagnetic Interference (EMI) caused due to neighboring frequencies for passive UHF RFID applications in WBAN.
{"title":"FSS supported longer read range passive UHF RFID reader antenna","authors":"Shivani Sharma, M. Tripathy, A. Sharma","doi":"10.1109/RFID-TA53372.2021.9617417","DOIUrl":"https://doi.org/10.1109/RFID-TA53372.2021.9617417","url":null,"abstract":"In the proposed work, a passive Radio Frequency {Identification (RFID) reader antenna operating for Ultra High Frequency (UHF) have been designed for wireless applications in Wireless Body Area Networks (WBAN). The proposed antenna is simulated on wearable material with low dielectric and low power dissipation for better bending strength. The radiating gain and directivity of the proposed RFID antenna are improved using a thin sheet of Frequency Selective Surface (FSS) above the radiating patch. The designed UHF RFID antenna radiates a high gain of 10 dB at 880 MHz with a bandwidth of 200 MHz. The measured return loss (S11) is -27 dB with the VSWR of 1.08. The antenna radiates for a long reading range of approximately 10m and provides better isolation to the Electromagnetic Interference (EMI) caused due to neighboring frequencies for passive UHF RFID applications in WBAN.","PeriodicalId":212607,"journal":{"name":"2021 IEEE International Conference on RFID Technology and Applications (RFID-TA)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133885485","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 : 2021-10-06DOI: 10.1109/RFID-TA53372.2021.9617261
Wen-Hai Zhang, Q. Xue, Wen‐Jun Lu, K. Tam, W. Che, S. Liao
A novel design approach for gain and beamwidth enhancement of planar endfire circularly polarized antenna (PECPA) is proposed. For the proof-of-concept, a rhombic electric dipole structure and a basic planar microstrip magnetic dipole antenna are utilized and implemented on a single layer substrate. In order to enhance the gain, both of these two complementary dipoles work at their high odd-order modes. Meanwhile, a directive E-field component is produced by the rhombic electric dipole structure for a large axial ratio (AR) beamwidth. It is numerically verified that an endfire gain about 5.86 dBi and AR beamwidth up to} $mathbf{1}mathbf{1}mathbf{0}^{circ}$ are realized without introducing extra elements. In addition, the main beam radiates parallelly with the substrate plane. Due to its advantages, the proposed PECPA exhibits a great potential for RFID handheld devices application.
{"title":"Planar Endfire CP Antenna with Enhanced Gain and Beamwidth for RFID Applications","authors":"Wen-Hai Zhang, Q. Xue, Wen‐Jun Lu, K. Tam, W. Che, S. Liao","doi":"10.1109/RFID-TA53372.2021.9617261","DOIUrl":"https://doi.org/10.1109/RFID-TA53372.2021.9617261","url":null,"abstract":"A novel design approach for gain and beamwidth enhancement of planar endfire circularly polarized antenna (PECPA) is proposed. For the proof-of-concept, a rhombic electric dipole structure and a basic planar microstrip magnetic dipole antenna are utilized and implemented on a single layer substrate. In order to enhance the gain, both of these two complementary dipoles work at their high odd-order modes. Meanwhile, a directive E-field component is produced by the rhombic electric dipole structure for a large axial ratio (AR) beamwidth. It is numerically verified that an endfire gain about 5.86 dBi and AR beamwidth up to} $mathbf{1}mathbf{1}mathbf{0}^{circ}$ are realized without introducing extra elements. In addition, the main beam radiates parallelly with the substrate plane. Due to its advantages, the proposed PECPA exhibits a great potential for RFID handheld devices application.","PeriodicalId":212607,"journal":{"name":"2021 IEEE International Conference on RFID Technology and Applications (RFID-TA)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114833947","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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