miun.sePublications
Change search
Link to record
Permanent link

Direct link
BETA
Olsson, Torbjörn
Publications (10 of 19) Show all publications
Olsson, T. (2007). Antenna robustness modelling. (Doctoral dissertation). Mid Sweden University
Open this publication in new window or tab >>Antenna robustness modelling
2007 (English)Doctoral thesis, comprehensive summary (Other academic)
Place, publisher, year, edition, pages
Mid Sweden University, 2007. p. 171
Series
Mid Sweden University doctoral thesis, ISSN 1652-893X ; 19
Keywords
antenna, robust, Monte Carlo, methodology, bootstrap
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:miun:diva-8886 (URN)978-91-85317-46-2 (ISBN)
Public defence
2007-05-29, Sundsvall, 13:15 (English)
Opponent
Supervisors
Available from: 2009-05-06 Created: 2009-05-06 Last updated: 2011-04-12Bibliographically approved
Olsson, T., Hjelm, M., Sidén, J. & Nilsson, H.-E. (2007). Comparative robustness study of planar antennas. IET Microwaves, Antennas & Propagation, 1(3), 674-680
Open this publication in new window or tab >>Comparative robustness study of planar antennas
2007 (English)In: IET Microwaves, Antennas & Propagation, ISSN 1751-8725, E-ISSN 1751-8733, Vol. 1, no 3, p. 674-680Article in journal (Refereed) Published
Abstract [en]

Is it possible to produce a planar dipole-like antenna with a reduced conductive area without any loss in either robustness or performance? The objective is to reduce the amount of expensive conductor to be used when applying a meshing technique to the printing of antennas. In this context, robustness means that the characteristics are maintained when the antenna is damaged, for example if it is scratched. This is particularly important for radio frequency identification tags in logistic systems. A general antenna robustness evaluation methodology, based on numerical simulations of a large number of randomly damaged antennas, is used for the antenna comparisons. The antenna performance degradation, based on the return loss (S11) at 868MHz, is monitored for some basic planar antennas. Finally, we show that it is possible to produce robust low-cost antennas using wire replacements for the solid planar antennas and thus, provided that the robustness requirement is moderate, replace the solid antenna with a thin conductor analogue.

Keywords
Antennas, robustness, RFID
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:miun:diva-3630 (URN)10.1049/iet-map:20060155 (DOI)000247853300021 ()2-s2.0-34249880500 (Scopus ID)4191 (Local ID)4191 (Archive number)4191 (OAI)
Projects
STC - Sensible Things that Communicate
Note

VR-

Available from: 2008-09-30 Created: 2008-09-30 Last updated: 2017-12-12Bibliographically approved
Nilsson, H.-E., Sidén, J., Olsson, T., Jonsson, P. & Koptoiug, A. (2007). Evaluation of a printed patch antenna for robust microwave RFID tags. IET Microwaves, Antennas & Propagation, 1(3), 776-781
Open this publication in new window or tab >>Evaluation of a printed patch antenna for robust microwave RFID tags
Show others...
2007 (English)In: IET Microwaves, Antennas & Propagation, ISSN 1751-8725, E-ISSN 1751-8733, Vol. 1, no 3, p. 776-781Article in journal (Refereed) Published
Abstract [en]

Antennas in RFID tags have often been designed in a single layer with copper as conductor and plastic foils as substrate. There is currently a large interest in roll to roll production of RFID tags and silver based inks have been developed for use in printed RFID antennas. Silver ink based single layer antennas works well and is providing 70% to 80% of the reading range compared to copper solutions. However, more advanced antennas are needed to provide less sensitivity to the environment of RFID tags .i.e. need for placing tags on metal or near water. In this work we present a study of multilayered antennas so called patch antennas, for 2.45 GHz RFID tags. The advantage of the patch antenna is that it can be applied to any kind of material, reflecting or lossy material, and still provide good antenna function. However, the patch antenna efficiency is strongly dependent on the material used. For low cost RFID tags in logistics there is a need to manufacture the antenna as a part of the packaging process. In the current work we have investigated the possibility to manufacture printed patch antennas of common packaging materials.

Keywords
RFID, Antenna, Conductive ink
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:miun:diva-4096 (URN)10.1049/iet-map:20060148 (DOI)000247853300038 ()2-s2.0-34249898053 (Scopus ID)4670 (Local ID)4670 (Archive number)4670 (OAI)
Projects
STC - Sensible Things that Communicate
Note

VR-

Available from: 2008-09-30 Created: 2009-01-07 Last updated: 2017-12-12Bibliographically approved
Olsson, T., Sidén, J., Hjelm, M. & Nilsson, H.-E. (2007). Robustness of printed patch antenna. IEEE Transactions on Antennas and Propagation, 55(10), 2709-2717
Open this publication in new window or tab >>Robustness of printed patch antenna
2007 (English)In: IEEE Transactions on Antennas and Propagation, ISSN 0018-926X, E-ISSN 1558-2221, Vol. 55, no 10, p. 2709-2717Article in journal (Refereed) Published
Abstract [en]

We address the question of robustness of damaged microstrip antennas, the damage being either penetrating, caused by fragment impact, or floating, caused by manufacturing imperfections. A simple analytic expression is derived to facilitate the prediction of robustness. To verify this expression a Monte Carlo method, based on a general 3D electromagnetic solver, is used to evaluate the robustness of the antennas. The simulations are verified by measurements and supplementary simulations in an alternative electromagnetic solver, using the finite difference time domain method (FDTD). The agreement between the simulated results and the analytic expression is found to be good in a qualitative comparison.

Keywords
Antennas
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:miun:diva-3631 (URN)10.1109/TAP.2007.905950 (DOI)000250178500009 ()2-s2.0-35348842141 (Scopus ID)4192 (Local ID)4192 (Archive number)4192 (OAI)
Projects
STC - Sensible Things that Communicate
Note

VR-Materials Science

Available from: 2008-09-30 Created: 2008-09-30 Last updated: 2017-12-12Bibliographically approved
Sidén, J., Nilsson, H.-E., Koptyug [Koptioug], A. & Olsson, T. (2006). A Distanced RFID Dipole for a Metallic Supply Chain Label. In: 2006 IEEE Antennas and Propagation Society International Symposium, 9-14 July 2006 , Albuquerque, NM, USA (pp. 3229-3232).
Open this publication in new window or tab >>A Distanced RFID Dipole for a Metallic Supply Chain Label
2006 (English)In: 2006 IEEE Antennas and Propagation Society International Symposium, 9-14 July 2006 , Albuquerque, NM, USA, 2006, p. 3229-3232Conference paper, Published paper (Refereed)
Keywords
Antennas, RFID
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:miun:diva-3742 (URN)4015 (Local ID)1 4244 0123 2 (ISBN)4015 (Archive number)4015 (OAI)
Available from: 2008-11-30 Created: 2008-11-30 Last updated: 2016-10-05Bibliographically approved
Olsson, T. & Nilsson, H.-E. (2006). Bow-tie and dipole antenna feed robustness mechanisms. IEEE Antennas and Wireless Propagation Letters, 5(1), 163-167, Article ID 872410.
Open this publication in new window or tab >>Bow-tie and dipole antenna feed robustness mechanisms
2006 (English)In: IEEE Antennas and Wireless Propagation Letters, ISSN 1536-1225, E-ISSN 1548-5757, Vol. 5, no 1, p. 163-167, article id 872410Article in journal (Refereed) Published
Abstract [en]

In a previous paper, (Olsson, Sidén, and Koptioug, "Robustness comparison of bow-tie and dipole antennas," IEE Proceedings Microwaves, Antennas and Propagation, vol. 151, no 6, Dec. 2004, pp. 525-529), it was shown that the dipóle antenna is more robust than the bow-tie antenna, with same radiator aperture area, to numbers of small randomly positioned holes penetrating the structures. In present paper it is shown that for a small number of holes the bow-tie antenna is more robust due to lower hit probability in high current density areas. The results show that the bow-tie feed is more robust for a small amount of damage, whereas the strip dipole feed (of width w and thickness t, with w ≫ t) is more robust in general terms, and particularly for larger number of damages.

Keywords
Antenna, Antenna feeds, Antenna tolerance analysis, Dipole antennas, Robustness
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:miun:diva-3629 (URN)10.1109/LAWP.2006.872410 (DOI)000243815900044 ()2-s2.0-34249903693 (Scopus ID)4190 (Local ID)4190 (Archive number)4190 (OAI)
Note

VR-Materials Science

Available from: 2008-09-30 Created: 2008-09-30 Last updated: 2017-12-12Bibliographically approved
Olsson, T., Christenssen, H., Olsson, F. & Filipsson, G. (2006). Simulations and experiments of compactable antennas for an UWB single pulse system. In: Proceedings of the Nordic Antenna Symposium (Antenn 06).
Open this publication in new window or tab >>Simulations and experiments of compactable antennas for an UWB single pulse system
2006 (English)In: Proceedings of the Nordic Antenna Symposium (Antenn 06), 2006Conference paper, Published paper (Other academic)
Keywords
antennas
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:miun:diva-3632 (URN)4193 (Local ID)4193 (Archive number)4193 (OAI)
Available from: 2008-09-30 Created: 2008-09-30 Last updated: 2011-04-12Bibliographically approved
Nilsson, H.-E., Sidén, J., Unander, T., Olsson, T., Jonsson, P., Koptioug, A. & Gulliksson, M. (2005). Characterization of moisture sensor based on printed Carbon-Zinc energy cell. In: Polytronic 2005: 5th International Conference on Polymers and Adhesives in Microelectronics and Photonics - Proceedings: . Paper presented at Polytronic 2005: 5th International Conference on Polymers and Adhesives in Microelectronics and Photonics; Warsaw; Poland; 23 October 2005 through 26 October 2005 (pp. 82-85). Piscataway, NJ: IEEE conference proceedings, Article ID 1596492.
Open this publication in new window or tab >>Characterization of moisture sensor based on printed Carbon-Zinc energy cell
Show others...
2005 (English)In: Polytronic 2005: 5th International Conference on Polymers and Adhesives in Microelectronics and Photonics - Proceedings, Piscataway, NJ: IEEE conference proceedings, 2005, p. 82-85, article id 1596492Conference paper, Published paper (Refereed)
Abstract [en]

In this work we present a simple printed moisture sensor fabricated using electronic inks on a multilayer paper structure. The sensor is based on a Carbon-Zinc type energy cell and provides power to a readout electronic circuit when activated by moisture. The sensors are based on a number of our filed patents according to which the sensor is used for both event detection and as a power source for the processing electronics. Typical applications are moisture and leakage detection in buildings, water pipe lines, smart packages and health care systems such as smart incontinence sensors. As the detector is triggered, it powers up an electronic circuit (polymer based or silicon based) that starts communication with the alarm server. In the simplest systems a sound or a light alarm is started to alert the user. In this work we present a characterization of some critical parameters of the sensor such as power driving capability, linearity, internal memory effects and saturation. In addition, we examine a specific application, when sensor is used as defrosting alarm for surveillance of frozen articles during transport.

Place, publisher, year, edition, pages
Piscataway, NJ: IEEE conference proceedings, 2005
Keywords
RFID, Printed sensors, Moisture detection
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:miun:diva-3324 (URN)10.1109/POLYTR.2005.1596492 (DOI)000240653100016 ()2-s2.0-33847182049 (Scopus ID)3268 (Local ID)0-7803-9553-0 (ISBN)3268 (Archive number)3268 (OAI)
Conference
Polytronic 2005: 5th International Conference on Polymers and Adhesives in Microelectronics and Photonics; Warsaw; Poland; 23 October 2005 through 26 October 2005
Available from: 2008-11-13 Created: 2008-11-03 Last updated: 2016-10-05Bibliographically approved
Sidén, J., Olsson, T., Koptioug, A. & Nilsson, H.-E. (2005). Reduced Amount of Conductive Ink with Gridded Printed Antennas. In: Polytronic 2005: 5th International Conference on Polymers and Adhesives in Microelectronics and Photonics - Proceedings: . Paper presented at Polytronic 2005: 5th International Conference on Polymers and Adhesives in Microelectronics and Photonics; Warsaw; Poland; 23 October 2005 through 26 October 2005 (pp. 86-89). Piscataway, NJ: IEEE conference proceedings, Article ID 1596493.
Open this publication in new window or tab >>Reduced Amount of Conductive Ink with Gridded Printed Antennas
2005 (English)In: Polytronic 2005: 5th International Conference on Polymers and Adhesives in Microelectronics and Photonics - Proceedings, Piscataway, NJ: IEEE conference proceedings, 2005, p. 86-89, article id 1596493Conference paper, Published paper (Refereed)
Abstract [en]

It becomes more and more common to print tag antennas using electrically conductive ink for mass-produced Radio Frequency IDentification (RFID) tags. Electrical properties of the ink are mostly determined by conductive (e.g. silver) particles mixed into the ink solution. Since silver is relatively expensive it is desirable to minimize the amount of ink used per antenna. This paper illustrates how the printed conductor area of the antenna can be reduced by applying a grid pattern to an existing antenna geometry and to what extent the gridding can be performed without significantly degrading of the antenna electrical properties. Two common antenna structures are used as an example. It is also shown that by slightly modifying the original antenna geometry it is possible to even further reduce the amount of used ink.

Place, publisher, year, edition, pages
Piscataway, NJ: IEEE conference proceedings, 2005
Keywords
RFID, Silver Ink, Printed Antennas
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:miun:diva-3323 (URN)10.1109/POLYTR.2005.1596493 (DOI)000240653100017 ()2-s2.0-33847188106 (Scopus ID)3267 (Local ID)0-7803-9553-0 (ISBN)3267 (Archive number)3267 (OAI)
Conference
Polytronic 2005: 5th International Conference on Polymers and Adhesives in Microelectronics and Photonics; Warsaw; Poland; 23 October 2005 through 26 October 2005
Available from: 2008-09-30 Created: 2008-09-30 Last updated: 2016-10-05Bibliographically approved
Olsson, T., Sidén, J. & Koptioug, A. (2005). Robustness comparison of bow-tie and dipole antennas. IEE Proceedings - Microwaves Antennas and Propagation, 151(6), 525-529
Open this publication in new window or tab >>Robustness comparison of bow-tie and dipole antennas
2005 (English)In: IEE Proceedings - Microwaves Antennas and Propagation, ISSN 1350-2417, E-ISSN 1359-706X, Vol. 151, no 6, p. 525-529Article in journal (Refereed) Published
Abstract [en]

The paper describes the application of a computer intensive methodology to evaluate antenna susceptibility to random physical damage for a dipole and a bow-tie antenna. For each randomly generated damage pattern antenna parameters are simulated and a statistical comparison is performed. Computer intensive statistical methods like the Bootstrap, used here for postprocessing, make fewer initial assumptions than classical statistical methods when modelling a problem, and are robust against small deflections from these assumptions. The bias-corrected and accelerated (BCa) Bootstrap method is used for confidence interval estimates. The dipole antenna is found to be more robust to numbers of small (similar to 100th of a wavelength) circular holes penetrating the structure than the bow-tie antenna.

Keywords
antennas, bootstrap, robustness
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:miun:diva-2672 (URN)10.1049/ip-map:20040914 (DOI)000225963600011 ()2076 (Local ID)2076 (Archive number)2076 (OAI)
Available from: 2008-09-30 Created: 2008-09-30 Last updated: 2017-12-12Bibliographically approved
Organisations

Search in DiVA

Show all publications