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Modelling of antenna robustness
Mittuniversitetet, Fakulteten för naturvetenskap, teknik och medier, Institutionen för informationsteknologi och medier. (FSCN - Fibre Science and Communication Network)
2004 (engelsk)Licentiatavhandling, med artikler (Annet vitenskapelig)
sted, utgiver, år, opplag, sider
Sundsvall: Mittuniversitetet , 2004. , s. 30
Serie
Mid Sweden University licentiate thesis, ISSN 1652-8948 ; 5
Emneord [en]
Antenna, robust, Monte Carlo, methodology, bootstrap
HSV kategori
Identifikatorer
URN: urn:nbn:se:miun:diva-9341ISBN: 91-87908-85-9 (tryckt)OAI: oai:DiVA.org:miun-9341DiVA, id: diva2:227277
Presentation
(engelsk)
Veileder
Tilgjengelig fra: 2009-07-10 Laget: 2009-07-10 Sist oppdatert: 2017-11-29bibliografisk kontrollert
Delarbeid
1. Performance Degradation of RFID System due to the Distortion in RFID Tag Antenna
Åpne denne publikasjonen i ny fane eller vindu >>Performance Degradation of RFID System due to the Distortion in RFID Tag Antenna
2001 (engelsk)Inngår i: CriMiCo 2001 - 11th International Conference, Institute of Electrical and Electronics Engineers (IEEE), 2001, s. 371-373, artikkel-id 1173865Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

In some of the radio-frequency identification (RFID) applications, RFID tag antennas will be printed onto flexible substrates. Sticked onto different surfaces, geometric distortion of the tag antenna, such as bending of the tag, could occur due to antenna substrate flexibility. In the present paper performance degradation due to such distortion of an RFID system, using the common half-wave dipole antennas usually used in tags, is simulated. It is shown that degradation of RFID system performance in terms of operating range due to such distortion is significant and that antenna structures less sensitive for this deformation should be considered for RFID systems where this kind of effect may occur.

sted, utgiver, år, opplag, sider
Institute of Electrical and Electronics Engineers (IEEE), 2001
Emneord
Antenna, dipole
HSV kategori
Identifikatorer
urn:nbn:se:miun:diva-1798 (URN)2-s2.0-34547312886 (Scopus ID)506 (Lokal ID)966-7968-00-6 (ISBN)506 (Arkivnummer)506 (OAI)
Konferanse
11th International Conference "Microwave and Telecommunication Technology", CriMiCo 2001; Sevastopol, Crimea; Ukraine; 10 September 2001 through 14 September 2001
Tilgjengelig fra: 2008-09-30 Laget: 2009-01-07 Sist oppdatert: 2016-10-05bibliografisk kontrollert
2. Deformed Bow-tie antenna
Åpne denne publikasjonen i ny fane eller vindu >>Deformed Bow-tie antenna
Vise andre…
2003 (engelsk)Inngår i: Antenn 03. Nordic Antenna Symposium, 13-15 May 2003 , Kalmar, Sweden, 2003, s. 183-188Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

Antennas in some military applications can be expected to suffer from physical damage of the antenna structure itself. Examples are intelligent munitions when rammed into the gun barrel and vehicle mounted conformal antennas harmed by various types of mechanical impact. Another example is extremely low cost antenna applications. A Radio Frequency IDentification (RFID) system consists of a more or less advanced reader and a very simple tag that can be fastened onto a variety of surfaces. The tag incorporates a transceiver and can carry one or more sensing devices and report findings back to the reader. To keep costs down, low-cost standardized antennas will be used even when the tag is deployed in harsh environments. For the kind of antennas described above, a predictable graceful degradation of performance is appealing. A partial damage of the antenna must not lead to a system breakdown. An essential part of the antenna design must be to ensure robust communication even when the antenna is partially damaged. What performance can be expected from an antenna when part of its structure has been removed? In this paper this issue is examined for a bow-tie antenna when part of its structure has been removed. The structural deformation has been inflicted by removing stripes of the outer part of one of the antenna arms. The investigation was undertaken by simulations in a commercial Finite Integration (FI) program and by verifying measurements.

Emneord
Antenna, Bow-tie
HSV kategori
Identifikatorer
urn:nbn:se:miun:diva-1797 (URN)503 (Lokal ID)503 (Arkivnummer)503 (OAI)
Tilgjengelig fra: 2008-09-30 Laget: 2008-09-30 Sist oppdatert: 2017-08-30bibliografisk kontrollert
3. Statistical analysis of antenna robustness
Åpne denne publikasjonen i ny fane eller vindu >>Statistical analysis of antenna robustness
2005 (engelsk)Inngår i: IEEE Transactions on Antennas and Propagation, ISSN 0018-926X, E-ISSN 1558-2221, Vol. 53, nr 1, s. 566-568Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

This paper presents a methodology for the evaluation of antenna susceptibility to various types of random physical damage. A Monte Carlo statistical method is proposed to estimate antenna parameters for different damage levels. A virtual experiment is used in order to avoid lengthy experimental trials. Antenna parameters are modeled for each randomly generated damage pattern. Statistical post processing with the Bootstrap method evaluates the parameters acquired from the antenna modeling software. To illustrate the methodology a comparative study of the Input Return Loss for the damage inflicted upon a planar dipole and a bow-tie antenna is made. The median value is estimated to describe the "typical" behavior of the antenna. With taken assumptions, Input Return Loss for the Bow-tie antenna is found more sensitive to partial damage

Emneord
Antennas, Monte Carlo Methods, Robustness, Statistics
HSV kategori
Identifikatorer
urn:nbn:se:miun:diva-2870 (URN)10.1109/TAP.2004.838779 (DOI)000226261600040 ()2478 (Lokal ID)2478 (Arkivnummer)2478 (OAI)
Merknad
VR-Materials ScienceTilgjengelig fra: 2008-09-30 Laget: 2008-09-30 Sist oppdatert: 2017-12-12bibliografisk kontrollert

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