Pub Date : 2016-11-01DOI: 10.1109/LAPC.2016.7807590
J. Heirons, S. Jun, A. Shastri, B. Sanz-Izquierdo, D. Bird, L. Winchester, L. Evans, A. McClelland
A circularly polarized patch antenna fabricated using commercially available, low-cost, printers is described. Two additive processes are combined for the fabrication: stereolithography (SLA) and inkjet printing of silver inks. A widely available SLA 3D printer is employed to fabricate the substrate of the antenna. Inkjet printing is used to deposit the metallic layers of the radiating element on the substrate. The two machines employed are very low-cost in comparison to those used in previously reported work. Good adhesion of the metallic patterns to the substrates is observed. Furthermore, the resistance of the added metallic patch is relatively low. The aim is to demonstrate the use of alternative, inexpensive machines, for the prototyping and manufacturing of antennas on 3D printed substrates. In this work, the antenna operates at the 1.575GHz GPS frequency band. Finite-difference-time-domain simulations compare well with the practical experiments.
{"title":"Inkjet printed GPS antenna on a 3D printed substrate using low-cost machines","authors":"J. Heirons, S. Jun, A. Shastri, B. Sanz-Izquierdo, D. Bird, L. Winchester, L. Evans, A. McClelland","doi":"10.1109/LAPC.2016.7807590","DOIUrl":"https://doi.org/10.1109/LAPC.2016.7807590","url":null,"abstract":"A circularly polarized patch antenna fabricated using commercially available, low-cost, printers is described. Two additive processes are combined for the fabrication: stereolithography (SLA) and inkjet printing of silver inks. A widely available SLA 3D printer is employed to fabricate the substrate of the antenna. Inkjet printing is used to deposit the metallic layers of the radiating element on the substrate. The two machines employed are very low-cost in comparison to those used in previously reported work. Good adhesion of the metallic patterns to the substrates is observed. Furthermore, the resistance of the added metallic patch is relatively low. The aim is to demonstrate the use of alternative, inexpensive machines, for the prototyping and manufacturing of antennas on 3D printed substrates. In this work, the antenna operates at the 1.575GHz GPS frequency band. Finite-difference-time-domain simulations compare well with the practical experiments.","PeriodicalId":253379,"journal":{"name":"2016 Loughborough Antennas & Propagation Conference (LAPC)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130061351","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 : 2016-11-01DOI: 10.1109/LAPC.2016.7807555
H. Visser, Thymen D. J. Rijpkema
A reconfigurable monopole array antenna consists of one or a few driven monopole elements, surrounded by passive monopole elements that can be switched to be connected to ground. Thus, the antenna radiation pattern can be discretely adjusted by choosing different subsets of parasitic monopole elements connected to ground. This switching can be performed by PIN diodes. Here we will look at the alternative of using commercially available fluorescent light tubes. These fluorescent light tubes will become active, that is form plasma monopole antennas, when switched on. For a practical application we need to investigate the RF excitation of such plasma antennas and we need to find a way to tune the resonance frequency for a fixed length fluorescent tube. It is found that creating a magnetic frill excitation in a ground plane works well and that we can tune the resonance frequency by lowering or extending the tube in or from the ground plane while shielding the lowered part of the fluorescent tube.
{"title":"Practical fluorescent light tube antenna design: A feasibility study","authors":"H. Visser, Thymen D. J. Rijpkema","doi":"10.1109/LAPC.2016.7807555","DOIUrl":"https://doi.org/10.1109/LAPC.2016.7807555","url":null,"abstract":"A reconfigurable monopole array antenna consists of one or a few driven monopole elements, surrounded by passive monopole elements that can be switched to be connected to ground. Thus, the antenna radiation pattern can be discretely adjusted by choosing different subsets of parasitic monopole elements connected to ground. This switching can be performed by PIN diodes. Here we will look at the alternative of using commercially available fluorescent light tubes. These fluorescent light tubes will become active, that is form plasma monopole antennas, when switched on. For a practical application we need to investigate the RF excitation of such plasma antennas and we need to find a way to tune the resonance frequency for a fixed length fluorescent tube. It is found that creating a magnetic frill excitation in a ground plane works well and that we can tune the resonance frequency by lowering or extending the tube in or from the ground plane while shielding the lowered part of the fluorescent tube.","PeriodicalId":253379,"journal":{"name":"2016 Loughborough Antennas & Propagation Conference (LAPC)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120893229","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 : 2016-11-01DOI: 10.1109/LAPC.2016.7807505
Pratigya Mathur, G. Kumar
A comparison between corporate fed microstrip antenna array (MSAA) and an electromagnetically coupled microstrip antenna array (EMCP-MSAA) at Ka-band is presented. A low loss feed network is proposed based on the analysis of different line widths used in the feed network. Gain improvement of 25% (1.5 dB) is achieved using the proposed feed network in 2×2 EMCP-MSAA. A 8×8 MSAA has been designed and fabricated at Ka-band. The measured bandwidth is 4.3% with gain of 24dB. Bandwidth enhancement is done by designing and fabricating EMCP-MSAA to give bandwidth of 17% for 8×8 array.
{"title":"Improved performance of microstrip antenna arrays through electromagnetic coupling at Ka-band","authors":"Pratigya Mathur, G. Kumar","doi":"10.1109/LAPC.2016.7807505","DOIUrl":"https://doi.org/10.1109/LAPC.2016.7807505","url":null,"abstract":"A comparison between corporate fed microstrip antenna array (MSAA) and an electromagnetically coupled microstrip antenna array (EMCP-MSAA) at Ka-band is presented. A low loss feed network is proposed based on the analysis of different line widths used in the feed network. Gain improvement of 25% (1.5 dB) is achieved using the proposed feed network in 2×2 EMCP-MSAA. A 8×8 MSAA has been designed and fabricated at Ka-band. The measured bandwidth is 4.3% with gain of 24dB. Bandwidth enhancement is done by designing and fabricating EMCP-MSAA to give bandwidth of 17% for 8×8 array.","PeriodicalId":253379,"journal":{"name":"2016 Loughborough Antennas & Propagation Conference (LAPC)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116004968","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 : 2016-11-01DOI: 10.1109/LAPC.2016.7807568
A. Z. Papafragkakis, C. Kourogiorgas, A. Panagopoulos, S. Ventouras, R. Reeves, E. Rumi
The ongoing migration of satellite communication services to higher bands, namely the Ka- and Q-bands offer numerous advantages; however, signal propagation at these bands can be severely impaired by the various atmospheric phenomena. To assist in the validation and development of new accurate propagation models in these bands, two propagation site diversity experimental campaign have been initiated between Greece and in the United Kingdom using ALPHASAT satellite beacons. In this paper, we present some technical details of the two site diversity experiments (receivers, ancillary equipment). Moreover, we discuss upcoming statistical results of the space-time correlation of the data and the employment of smart gateway diversity scheme for feeder links.
{"title":"Site diversity experimental campaigns in Greece and UK using ALPHASAT at Ka and Q band","authors":"A. Z. Papafragkakis, C. Kourogiorgas, A. Panagopoulos, S. Ventouras, R. Reeves, E. Rumi","doi":"10.1109/LAPC.2016.7807568","DOIUrl":"https://doi.org/10.1109/LAPC.2016.7807568","url":null,"abstract":"The ongoing migration of satellite communication services to higher bands, namely the Ka- and Q-bands offer numerous advantages; however, signal propagation at these bands can be severely impaired by the various atmospheric phenomena. To assist in the validation and development of new accurate propagation models in these bands, two propagation site diversity experimental campaign have been initiated between Greece and in the United Kingdom using ALPHASAT satellite beacons. In this paper, we present some technical details of the two site diversity experiments (receivers, ancillary equipment). Moreover, we discuss upcoming statistical results of the space-time correlation of the data and the employment of smart gateway diversity scheme for feeder links.","PeriodicalId":253379,"journal":{"name":"2016 Loughborough Antennas & Propagation Conference (LAPC)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124234240","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 : 2016-11-01DOI: 10.1109/LAPC.2016.7807489
N. A. Jan, M. Lashab, C. Zebiri, Djouablia Linda, R. Abd‐Alhameed, F. Benabdelaziz
In this paper a CPW-Fed antenna loaded with CRLH-TL resonator (composite right left hand) and EBG (electromagnetic band gap) for multi-band and gain enhancement application also for miniaturization effect, the antenna contains a monopole antenna with two grounds on the top side, the antenna is loaded with a set of TL (transmission line) as inductors and capacitors. The aim of this work is to exhibit the gain enhancement by the insertion of EBG squares and the multiband by the insertion of the CRLH, the miniaturization effect on the antenna giving dimension of 0.17λo × 0.23λo regarding the first resonant frequency. The obtained results by simulation from HFSS show that the antenna has tri-band in the range of 2.64 GHz to 2.74 GHz as LTE band, and 3.3 GHz to 3.5 GHz as WiMax and 4.25 GHz to 5.5 GHz as WLAN. A maximum gain of 4.42 dBi is achieved in the last band.
{"title":"Compact CPW antenna loaded with CRLH-TL and EBG for multi-band and gain enhancement","authors":"N. A. Jan, M. Lashab, C. Zebiri, Djouablia Linda, R. Abd‐Alhameed, F. Benabdelaziz","doi":"10.1109/LAPC.2016.7807489","DOIUrl":"https://doi.org/10.1109/LAPC.2016.7807489","url":null,"abstract":"In this paper a CPW-Fed antenna loaded with CRLH-TL resonator (composite right left hand) and EBG (electromagnetic band gap) for multi-band and gain enhancement application also for miniaturization effect, the antenna contains a monopole antenna with two grounds on the top side, the antenna is loaded with a set of TL (transmission line) as inductors and capacitors. The aim of this work is to exhibit the gain enhancement by the insertion of EBG squares and the multiband by the insertion of the CRLH, the miniaturization effect on the antenna giving dimension of 0.17λo × 0.23λo regarding the first resonant frequency. The obtained results by simulation from HFSS show that the antenna has tri-band in the range of 2.64 GHz to 2.74 GHz as LTE band, and 3.3 GHz to 3.5 GHz as WiMax and 4.25 GHz to 5.5 GHz as WLAN. A maximum gain of 4.42 dBi is achieved in the last band.","PeriodicalId":253379,"journal":{"name":"2016 Loughborough Antennas & Propagation Conference (LAPC)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125741911","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 : 2016-11-01DOI: 10.1109/LAPC.2016.7807540
Simon Muller, Rene Thull, M. Huber, A. Diewald
The authors investigate the 3D modeling of ENIG surfaces on PCBs for microstrip patch antennas at 24 GHz. A CST Microwave Studio simulation of patches with various dimensions is performed. The results are compared to measurements of a total number of 26 patches processed at Euro circuits on Rogers RO4350B laminate. The accuracy of simulation and production tolerances are estimated by the deviations between simulation, measurement and regression of the measured frequency response of each antenna.
{"title":"Microstrip patch antennas on EUROCIRCUITS process","authors":"Simon Muller, Rene Thull, M. Huber, A. Diewald","doi":"10.1109/LAPC.2016.7807540","DOIUrl":"https://doi.org/10.1109/LAPC.2016.7807540","url":null,"abstract":"The authors investigate the 3D modeling of ENIG surfaces on PCBs for microstrip patch antennas at 24 GHz. A CST Microwave Studio simulation of patches with various dimensions is performed. The results are compared to measurements of a total number of 26 patches processed at Euro circuits on Rogers RO4350B laminate. The accuracy of simulation and production tolerances are estimated by the deviations between simulation, measurement and regression of the measured frequency response of each antenna.","PeriodicalId":253379,"journal":{"name":"2016 Loughborough Antennas & Propagation Conference (LAPC)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126851258","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 : 2016-11-01DOI: 10.1109/LAPC.2016.7807510
Senan Morris, A. R. Chandran, N. Timmons, J. Morrison
The design, fabrication, and performance analysis of a Polyimide Loop antenna is presented. This design is particularly intended for wearable wireless body area network applications where safe, conformal, and flexible antennas are desirable. The performance of the Polyimide Loop antenna was compared to that of a standard copper wire loop antenna. Both antennas demonstrated comparable free space performances. When the antennas were placed in close proximity to human tissue both experienced a shift in the resonance frequency due to on-body coupling. The Polyimide Loop antenna was also tested in flexed conditions and a minimal shift in resonance frequency was observed. The flexible polyimide loop antenna was shown to have a superior on body coupling compared to the equivalent rigid copper wire loop.
{"title":"The fabrication and analysis of a polyimide based loop antenna for 2.45GHz WBAN applications","authors":"Senan Morris, A. R. Chandran, N. Timmons, J. Morrison","doi":"10.1109/LAPC.2016.7807510","DOIUrl":"https://doi.org/10.1109/LAPC.2016.7807510","url":null,"abstract":"The design, fabrication, and performance analysis of a Polyimide Loop antenna is presented. This design is particularly intended for wearable wireless body area network applications where safe, conformal, and flexible antennas are desirable. The performance of the Polyimide Loop antenna was compared to that of a standard copper wire loop antenna. Both antennas demonstrated comparable free space performances. When the antennas were placed in close proximity to human tissue both experienced a shift in the resonance frequency due to on-body coupling. The Polyimide Loop antenna was also tested in flexed conditions and a minimal shift in resonance frequency was observed. The flexible polyimide loop antenna was shown to have a superior on body coupling compared to the equivalent rigid copper wire loop.","PeriodicalId":253379,"journal":{"name":"2016 Loughborough Antennas & Propagation Conference (LAPC)","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127051362","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 : 2016-11-01DOI: 10.1109/LAPC.2016.7807499
Fengzhou Wang, T. Arslan
The paper describes a method of inkjet-printing a Co-Planar Waveguide (CPW)-fed flexible antenna for the development of a wearable microwave imaging (MWI) device for cancer detection and monitoring. The single side of a monopole antenna is represented as a fractal pattern with customized slots. The antenna is inkjet-printed using a low-cost additive fabrication method on a flexible substrate such as Kapton using Dimatix materials printer. Simulation using CST Microwave Studio and measurement carried out on an inkjet printed antenna with a VNA confirm that the designed antenna bandwidth ranges from 2.5GHz to 6.5GHz making it suitable for Microwave imaging applications.
{"title":"Inkjet-printed antenna on flexible substrate for wearable microwave imaging applications","authors":"Fengzhou Wang, T. Arslan","doi":"10.1109/LAPC.2016.7807499","DOIUrl":"https://doi.org/10.1109/LAPC.2016.7807499","url":null,"abstract":"The paper describes a method of inkjet-printing a Co-Planar Waveguide (CPW)-fed flexible antenna for the development of a wearable microwave imaging (MWI) device for cancer detection and monitoring. The single side of a monopole antenna is represented as a fractal pattern with customized slots. The antenna is inkjet-printed using a low-cost additive fabrication method on a flexible substrate such as Kapton using Dimatix materials printer. Simulation using CST Microwave Studio and measurement carried out on an inkjet printed antenna with a VNA confirm that the designed antenna bandwidth ranges from 2.5GHz to 6.5GHz making it suitable for Microwave imaging applications.","PeriodicalId":253379,"journal":{"name":"2016 Loughborough Antennas & Propagation Conference (LAPC)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131332144","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 : 2016-11-01DOI: 10.1109/LAPC.2016.7807545
Kansheng Yang, A. Loutridis, X. Bao, P. McEvoy, M. Ammann
A new design approach of a dual-stub coplanar Vivaldi antenna with integrated filter is presented. The dual-stub excites coupling between a parasitic elliptical element and tapered slots. The dimensions of the parasitic element are studied and optimized for wide beamwidth. The band pass filter is used for sub harmonic suppression and pattern shaping.
{"title":"A coplanar vivaldi antenna with integrated filter for Ka-band","authors":"Kansheng Yang, A. Loutridis, X. Bao, P. McEvoy, M. Ammann","doi":"10.1109/LAPC.2016.7807545","DOIUrl":"https://doi.org/10.1109/LAPC.2016.7807545","url":null,"abstract":"A new design approach of a dual-stub coplanar Vivaldi antenna with integrated filter is presented. The dual-stub excites coupling between a parasitic elliptical element and tapered slots. The dimensions of the parasitic element are studied and optimized for wide beamwidth. The band pass filter is used for sub harmonic suppression and pattern shaping.","PeriodicalId":253379,"journal":{"name":"2016 Loughborough Antennas & Propagation Conference (LAPC)","volume":"25 5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125616586","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 : 2016-11-01DOI: 10.1109/LAPC.2016.7807618
M. Pigeon, O. Sushko, R. Donnan, C. Parini, R. Dubrovka, T. Kreouzis
This paper describes how two radiating elements designed for two different resonating frequencies can be coupled to properly radiate a higher harmonic frequency. The placement of the higher frequency resonating element is chosen by considering the electric filed distribution in the lower frequency antenna. This combination establishes enhanced radiation efficiency at 300 GHz (i.e. the third harmonic of the fundamental).
{"title":"Higher harmonic generation: Coupling two radiating elements at two different frequencies","authors":"M. Pigeon, O. Sushko, R. Donnan, C. Parini, R. Dubrovka, T. Kreouzis","doi":"10.1109/LAPC.2016.7807618","DOIUrl":"https://doi.org/10.1109/LAPC.2016.7807618","url":null,"abstract":"This paper describes how two radiating elements designed for two different resonating frequencies can be coupled to properly radiate a higher harmonic frequency. The placement of the higher frequency resonating element is chosen by considering the electric filed distribution in the lower frequency antenna. This combination establishes enhanced radiation efficiency at 300 GHz (i.e. the third harmonic of the fundamental).","PeriodicalId":253379,"journal":{"name":"2016 Loughborough Antennas & Propagation Conference (LAPC)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115725529","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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