Pub Date : 2009-03-02DOI: 10.1109/IWAT.2009.4906963
C. Furse
Biomedical telemetry is used today to communication with cardiac devices, insulin pumps, and a few other implantable devices that are on the order of 1–2″ in diameter. Future systems promise advanced communication with cardiac, optical, neurological and auditory devices that are on the order of a centimeter in dimension. Miniaturized antennas and inductive coupling systems provide the radio interface between air and the implantable device. New materials and methods allow miniaturized communication systems to be seamlessly integrated within the medical device itself. This paper describes recent advances in biotelemetry, the challenges faced today, and opportunities for the future.
{"title":"Biomedical telemetry: Today's opportunities and challenges","authors":"C. Furse","doi":"10.1109/IWAT.2009.4906963","DOIUrl":"https://doi.org/10.1109/IWAT.2009.4906963","url":null,"abstract":"Biomedical telemetry is used today to communication with cardiac devices, insulin pumps, and a few other implantable devices that are on the order of 1–2″ in diameter. Future systems promise advanced communication with cardiac, optical, neurological and auditory devices that are on the order of a centimeter in dimension. Miniaturized antennas and inductive coupling systems provide the radio interface between air and the implantable device. New materials and methods allow miniaturized communication systems to be seamlessly integrated within the medical device itself. This paper describes recent advances in biotelemetry, the challenges faced today, and opportunities for the future.","PeriodicalId":166472,"journal":{"name":"2009 IEEE International Workshop on Antenna Technology","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122779361","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 : 2009-03-02DOI: 10.1109/IWAT.2009.4906919
K. Q. da Costa, V. Dmitriev, M. Kawakatsu
We present in this work some theoretical and experimental results of utilization of loop parasitic elements in wire (dipole) and planar (patch and monopole) antennas for increasing the impedance matching bandwidth. The antennas were analyzed using our programs, based on the numerical resolution of the electric field integral equation (EFIE) by the method of moments (MoM), and using the commercial softwares IE3D and HFSS. In one of the case studied we compared numerical calculations with experimental data. The obtained results shown that the impedance matching bandwidth can be considerably enlarged with this method.
{"title":"Enlarging the impedance matching bandwidth of wire and planar antennas using loop parasitic elements","authors":"K. Q. da Costa, V. Dmitriev, M. Kawakatsu","doi":"10.1109/IWAT.2009.4906919","DOIUrl":"https://doi.org/10.1109/IWAT.2009.4906919","url":null,"abstract":"We present in this work some theoretical and experimental results of utilization of loop parasitic elements in wire (dipole) and planar (patch and monopole) antennas for increasing the impedance matching bandwidth. The antennas were analyzed using our programs, based on the numerical resolution of the electric field integral equation (EFIE) by the method of moments (MoM), and using the commercial softwares IE3D and HFSS. In one of the case studied we compared numerical calculations with experimental data. The obtained results shown that the impedance matching bandwidth can be considerably enlarged with this method.","PeriodicalId":166472,"journal":{"name":"2009 IEEE International Workshop on Antenna Technology","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131295105","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 : 2009-03-02DOI: 10.1109/IWAT.2009.4906944
A. Sen, J. S. Roy, S. R. Bhadra Chaudhuri
In this paper, the design of a micro strip patch antenna is reported which can be operated at GPS (Global Positioning System) and Bluetooth frequencies. Very small thin micro strip antenna is excited by a co-axial SMA connector to produce centre frequency of a Bluetooth system and the correct feed position is determined for impedance matching. Then a thin parasitic micro strip patch is coupled with this patch to excite the centre frequency of GPS system. The simulated results using IE3D software are supported by measurement.
{"title":"Investigations on a dual-frequency micro strip antenna for wireless applications","authors":"A. Sen, J. S. Roy, S. R. Bhadra Chaudhuri","doi":"10.1109/IWAT.2009.4906944","DOIUrl":"https://doi.org/10.1109/IWAT.2009.4906944","url":null,"abstract":"In this paper, the design of a micro strip patch antenna is reported which can be operated at GPS (Global Positioning System) and Bluetooth frequencies. Very small thin micro strip antenna is excited by a co-axial SMA connector to produce centre frequency of a Bluetooth system and the correct feed position is determined for impedance matching. Then a thin parasitic micro strip patch is coupled with this patch to excite the centre frequency of GPS system. The simulated results using IE3D software are supported by measurement.","PeriodicalId":166472,"journal":{"name":"2009 IEEE International Workshop on Antenna Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131329691","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 : 2009-03-02DOI: 10.1109/IWAT.2009.4906948
Yong-xin Guo, S. Yeap, Zhi Ning Chen
In this paper, the wafer transfer technology (WTT) and the low-temperature co-fired ceramic (LTCC) technology are employed for 60 GHz antenna designs. A coplanar waveguide (CPW) fed coplanar strip (CPS) dipole antenna using the WTT technology is presented. Meanwhile, two antenna arrays using the LTCC technology are reported.
{"title":"Antenna technologies for 60 GHz applications","authors":"Yong-xin Guo, S. Yeap, Zhi Ning Chen","doi":"10.1109/IWAT.2009.4906948","DOIUrl":"https://doi.org/10.1109/IWAT.2009.4906948","url":null,"abstract":"In this paper, the wafer transfer technology (WTT) and the low-temperature co-fired ceramic (LTCC) technology are employed for 60 GHz antenna designs. A coplanar waveguide (CPW) fed coplanar strip (CPS) dipole antenna using the WTT technology is presented. Meanwhile, two antenna arrays using the LTCC technology are reported.","PeriodicalId":166472,"journal":{"name":"2009 IEEE International Workshop on Antenna Technology","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122257045","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 : 2009-03-02DOI: 10.1109/IWAT.2009.4906867
Jin-Wei Wu, C. Jou, Chien‐Jen Wang
This paper proposes a dual-band circular polarization (CP) monopole antenna. This antenna can generate a broadband impedance-bandwidth from 2.17 to 8.47 GHz, and excite a left-hand circular polarization (LHCP) at 2.48 GHz and right-hand circular polarization (RHCP) at 3.90 GHz. The measured 3-dB axial ratio (AR) bandwidths are about 140 MHz from 2.41 to 2.55 GHz approximately 5.6% with respect to the center frequency at 2.48 GHz and 900 MHz from 3.45 to 4.35 GHz approximately 23.1% with respect to the center frequency at 3.90 GHz.
{"title":"Dual-band circularly polarized monopole antenna","authors":"Jin-Wei Wu, C. Jou, Chien‐Jen Wang","doi":"10.1109/IWAT.2009.4906867","DOIUrl":"https://doi.org/10.1109/IWAT.2009.4906867","url":null,"abstract":"This paper proposes a dual-band circular polarization (CP) monopole antenna. This antenna can generate a broadband impedance-bandwidth from 2.17 to 8.47 GHz, and excite a left-hand circular polarization (LHCP) at 2.48 GHz and right-hand circular polarization (RHCP) at 3.90 GHz. The measured 3-dB axial ratio (AR) bandwidths are about 140 MHz from 2.41 to 2.55 GHz approximately 5.6% with respect to the center frequency at 2.48 GHz and 900 MHz from 3.45 to 4.35 GHz approximately 23.1% with respect to the center frequency at 3.90 GHz.","PeriodicalId":166472,"journal":{"name":"2009 IEEE International Workshop on Antenna Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123111815","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 : 2009-03-02DOI: 10.1109/IWAT.2009.4906913
J. Guterman, A. A. Moreira, C. Peixeiro, Y. Rahmat-Samii
This paper discusses the potential of E-shaped patches to be used in reconfigurable antennas. It is shown that the application of a PIFA configuration to dual-band E-shaped patches gives the freedom of independently tuning two resonances in a very wide frequency range, without affecting the antenna general structure and external dimensions. An application of these features to reconfigurable quasi-omnidirectional back-to-back E-shaped patch for laptops is demonstrated. To prove the concept a very simple model of RF MEMS switches is used in a dual-band laptop reconfigurable antenna prototype. In spite of frequency bands toggling (between IEEE 802.11b/g /2.44 GHz/ or WiMAX /3.45 GHz/ and IEEE 802.11a /5.25 GHz or 5.775 GHz/) the radiation pattern is always almost omnidirectional.
{"title":"Reconfigurable E-shaped patch antennas","authors":"J. Guterman, A. A. Moreira, C. Peixeiro, Y. Rahmat-Samii","doi":"10.1109/IWAT.2009.4906913","DOIUrl":"https://doi.org/10.1109/IWAT.2009.4906913","url":null,"abstract":"This paper discusses the potential of E-shaped patches to be used in reconfigurable antennas. It is shown that the application of a PIFA configuration to dual-band E-shaped patches gives the freedom of independently tuning two resonances in a very wide frequency range, without affecting the antenna general structure and external dimensions. An application of these features to reconfigurable quasi-omnidirectional back-to-back E-shaped patch for laptops is demonstrated. To prove the concept a very simple model of RF MEMS switches is used in a dual-band laptop reconfigurable antenna prototype. In spite of frequency bands toggling (between IEEE 802.11b/g /2.44 GHz/ or WiMAX /3.45 GHz/ and IEEE 802.11a /5.25 GHz or 5.775 GHz/) the radiation pattern is always almost omnidirectional.","PeriodicalId":166472,"journal":{"name":"2009 IEEE International Workshop on Antenna Technology","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133720826","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 : 2009-03-02DOI: 10.1109/IWAT.2009.4906926
C. Kakoyiannis, Penelope Gika, P. Constantinou
We present small sinusoidal printed monopoles as enhanced meander-line antennas shaped after smooth curves. The antennas were designed at 2–3 GHz according to the size and bandwidth constraints of multimedia sensor networks. Their performance was characterized in terms of electrical size, bandwidth, and broadband radiation efficiency. A suitable scalar quantity was used to capture the overall performance. Results show that the sinusoidal monopole achieves 68% more bandwidth compared to a meander-line antenna of similar size and efficiency. Antenna performance depends heavily on electrical size, which depends on the size of the ground plane; its effect on radiation was also studied.
{"title":"Small printed sinusoidal antennas: A simple design guide for smooth meander-line structures with augmented bandwidth","authors":"C. Kakoyiannis, Penelope Gika, P. Constantinou","doi":"10.1109/IWAT.2009.4906926","DOIUrl":"https://doi.org/10.1109/IWAT.2009.4906926","url":null,"abstract":"We present small sinusoidal printed monopoles as enhanced meander-line antennas shaped after smooth curves. The antennas were designed at 2–3 GHz according to the size and bandwidth constraints of multimedia sensor networks. Their performance was characterized in terms of electrical size, bandwidth, and broadband radiation efficiency. A suitable scalar quantity was used to capture the overall performance. Results show that the sinusoidal monopole achieves 68% more bandwidth compared to a meander-line antenna of similar size and efficiency. Antenna performance depends heavily on electrical size, which depends on the size of the ground plane; its effect on radiation was also studied.","PeriodicalId":166472,"journal":{"name":"2009 IEEE International Workshop on Antenna Technology","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114490511","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 : 2009-03-02DOI: 10.1109/IWAT.2009.4906973
R. Ziolkowski, Peng Jin, Chia-Ching Jin
Electrically small antennas are a critical enabling technology for a variety of wireless applications. The usually incompatible demands for electrically small, efficient, and broad bandwidth antenna systems often becomes further acerbated by practical demands of multi-functionality, low weight, low cost, and easy manufacturing. A variety of metamaterial-based and metamaterial-inspired antenna systems have been achieved recently that meet many of these demands. The essential features of these antennas and the experimental validation of their performance, especially their overall efficiencies, as well recent design extensions that have bandwidths near the Chu limit, will be reviewed.
{"title":"Electrically small metamaterial-inspired antennas: Designs and measurements, efficiency and bandwidth performance","authors":"R. Ziolkowski, Peng Jin, Chia-Ching Jin","doi":"10.1109/IWAT.2009.4906973","DOIUrl":"https://doi.org/10.1109/IWAT.2009.4906973","url":null,"abstract":"Electrically small antennas are a critical enabling technology for a variety of wireless applications. The usually incompatible demands for electrically small, efficient, and broad bandwidth antenna systems often becomes further acerbated by practical demands of multi-functionality, low weight, low cost, and easy manufacturing. A variety of metamaterial-based and metamaterial-inspired antenna systems have been achieved recently that meet many of these demands. The essential features of these antennas and the experimental validation of their performance, especially their overall efficiencies, as well recent design extensions that have bandwidths near the Chu limit, will be reviewed.","PeriodicalId":166472,"journal":{"name":"2009 IEEE International Workshop on Antenna Technology","volume":"292 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132147383","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 : 2009-03-02DOI: 10.1109/IWAT.2009.4906914
J. Selga, F. Aznar, A. Vélez, M. Gil, J. Bonache, F. Martín
In this work, highly selective filters based on periodic arrays of electrically small resonators are pointed out. The high-pass filters are implemented in microstrip technology by etching complementary split ring resonators (CSRRs), or complementary spiral resonators (CSRs), in the ground plane, and series capacitive gaps, or interdigital capacitors, in the signal strip. The structure exhibits a composite right/left handed (CRLH) behavior and, by properly tuning the geometry of the elements, a high pass response with a sharp transition band is obtained. The low-pass filters, also implemented in microstrip technology, are designed by cascading open complementary split ring resonators (OCSRRs) in the signal strip. These low pass filters do also exhibit a narrow transition band. The high selectivity of these microwave filters is due to the presence of a transmission zero. Since the resonant elements are small, filter dimensions are compact. Several prototype device examples are reported in this paper.
{"title":"Low-pass and high-pass microwave filters with transmission zero based on metamaterial concepts","authors":"J. Selga, F. Aznar, A. Vélez, M. Gil, J. Bonache, F. Martín","doi":"10.1109/IWAT.2009.4906914","DOIUrl":"https://doi.org/10.1109/IWAT.2009.4906914","url":null,"abstract":"In this work, highly selective filters based on periodic arrays of electrically small resonators are pointed out. The high-pass filters are implemented in microstrip technology by etching complementary split ring resonators (CSRRs), or complementary spiral resonators (CSRs), in the ground plane, and series capacitive gaps, or interdigital capacitors, in the signal strip. The structure exhibits a composite right/left handed (CRLH) behavior and, by properly tuning the geometry of the elements, a high pass response with a sharp transition band is obtained. The low-pass filters, also implemented in microstrip technology, are designed by cascading open complementary split ring resonators (OCSRRs) in the signal strip. These low pass filters do also exhibit a narrow transition band. The high selectivity of these microwave filters is due to the presence of a transmission zero. Since the resonant elements are small, filter dimensions are compact. Several prototype device examples are reported in this paper.","PeriodicalId":166472,"journal":{"name":"2009 IEEE International Workshop on Antenna Technology","volume":"99 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125109109","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 : 2009-03-02DOI: 10.1109/IWAT.2009.4906974
H. Arai, S. Nagatsuka
This paper presents an electrically small and low profile plate loop antenna with dual inverted-F resonant modes for mobile satellite communication systems in the VHF band. The proposed antenna consists of a feed element and a parasitic element for dual mode operation. A square patch element attached to an inner loop provides the function to adjust the frequency of higher resonant mode. Its dominant mode is explained by loop-element inverted-F shaped antenna, and the second mode is given by a parasitic loop-element. A prototype plate loop antenna is demonstrated to have dual mode resonances in the VHF band, and measured antenna characteristics are also presented.
{"title":"Low-profile dual-mode plate-loop antenna","authors":"H. Arai, S. Nagatsuka","doi":"10.1109/IWAT.2009.4906974","DOIUrl":"https://doi.org/10.1109/IWAT.2009.4906974","url":null,"abstract":"This paper presents an electrically small and low profile plate loop antenna with dual inverted-F resonant modes for mobile satellite communication systems in the VHF band. The proposed antenna consists of a feed element and a parasitic element for dual mode operation. A square patch element attached to an inner loop provides the function to adjust the frequency of higher resonant mode. Its dominant mode is explained by loop-element inverted-F shaped antenna, and the second mode is given by a parasitic loop-element. A prototype plate loop antenna is demonstrated to have dual mode resonances in the VHF band, and measured antenna characteristics are also presented.","PeriodicalId":166472,"journal":{"name":"2009 IEEE International Workshop on Antenna Technology","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127095137","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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