The Experts below are selected from a list of 2220 Experts worldwide ranked by ideXlab platform

Hendrik Rogier - One of the best experts on this subject based on the ideXlab platform.

  • Fully Flexible Textile Antenna-Backed Sensor Node for Body-Worn UWB Localization.
    Sensors (Basel Switzerland), 2021
    Co-Authors: Dries Van Baelen, Sam Lemey, Nicola Macoir, Quinten Van Den Brande, Eli De Poorter, Jo Verhaevert, Hendrik Rogier
    Abstract:

    A mechanically flexible Textile Antenna-backed sensor node is designed and manufactured, providing accurate personal localization functionality by application of Decawave’s DW1000 Impulse Radio Ultra-Wideband (IR-UWB) Integrated Circuit (IC). All components are mounted on a flexible polyimide foil, which is integrated on the backplane of a wearable cavity-backed slot Antenna designed for IR-UWB localization in Channels 2 and 3 of the IEEE 802.15.4-2011 standard (3744 MHz–4742.4 MHz). The Textile Antenna’s radiation pattern is optimized to mitigate body effects and to minimize absorption by body tissues. Furthermore, its time-domain characteristics are measured to be adequate for localization. By combining the Antenna and the bendable Printed Circuit Board (PCB), a mechanically supple sensor system is realized, for which the performance is validated by examining it as a node used in a complete localization system. This shows that six nodes around the body must be deployed to provide system coverage in all directions around the wearer. Even without using sleep mode functionalities, the measurements indicate that the system’s autonomy is 13.3 h on a 5 V 200 mAh battery. Hence, this system acts as a proof of concept for the joining of localization electronics and other sensors with a full-Textile Antenna into a mechanically flexible sensor system.

  • Energy-efficient Textile Antenna systems for body-centric communication and sensing
    2015 1st URSI Atlantic Radio Science Conference (URSI AT-RASC), 2015
    Co-Authors: Hendrik Rogier
    Abstract:

    Within the context of smart Textiles interactive fabrics systems, the development of wearable Antennas based on Textile fabrics has been an exciting research area for more than a decade now. The specific Textile Antenna design challenges involve the characterization of the conductive and non-conductive Antenna fabrics; the selection of low-loss Textiles; the application of an Antenna topology that realizes high body-Antenna isolation, as such ensuring high radiation efficiency in proximity of the human body; and the implementation of an Antenna with stable radiation characteristics, coping with the adverse effects the Textile Antenna is subjected to when integrated into a garment, such as bending, crumpling, stretching and varying humidity conditions. By now, many excellent Textile Antennas have been proposed in literature. However, not many of them are found in commercial wearable systems. The three main impediments for market penetration are: reliability issues of the connections between the Textile and the electronic components; the lack of dedicated Textile Antenna mass production techniques; and the availability of compact rigid fully integrated wireless nodes, for which currently no Textile counterparts exist. In this presentation, we will present some novel design paradigms that may overcome these problems, thereby paving the way to commercial Textile Antenna systems.

  • Dual-band substrate integrated waveguide Textile Antenna with integrated solar harvester
    IEEE Antennas and Wireless Propagation Letters, 2014
    Co-Authors: Sam Lemey, Frederick Declercq, Hendrik Rogier
    Abstract:

    A dual-band wearable Textile Antenna based on substrate integrated waveguide technology is presented for operation in the [2.4-2.4835]-GHz Industrial, Scientific and Medical band and the [2.5-2.69]-GHz 4G LTE band 7. The Antenna features an integrated flexible solar harvesting system, consisting of a flexible solar cell, a power management system, and energy storage. All these components are judiciously positioned on the Antenna platform in order not to affect its radiation performance. The measured reflection coefficients and radiation characteristics after bending and deploying the Antenna on a human body prove that the Antenna is well suited for on-body use. A measured on-body Antenna gain and radiation efficiency of 5.0 dBi and 89% are realized. Measurements in a real-life situation have demonstrated the ability to scavenge a maximum of 53 mW by means of a single integrated flexible solar cell.

  • high gain Textile Antenna array system for off body communication
    International Journal of Antennas and Propagation, 2012
    Co-Authors: Maria Lucia Scarpello, Hendrik Rogier, Luigi Vallozzi, Dries Vande Ginste
    Abstract:

    A novel high-gain Textile Antenna array system, fully integrated into a rescue-worker’s vest and operating in the Industrial, Scientific, and Medical wireless band (2.4–2.4835 GHz), is presented. The system comprises an array consisting of four tip-truncated equilateral triangular microstrip patch Antennas (ETMPAs), a power divider, line stretchers, and coaxial cables. The array is vertically positioned on the human torso to produce a narrow beam in elevation, as such reducing fading and allowing to steer the maximum gain in a small angular sector centered around the broadside direction. To allow simple low-cost beam steering, we specifically minimize mutual coupling by using a relative large distance between the patches and by selecting the ETMPA element as the most suited topology from three potential patch geometries. Moreover, we investigate the stability of return loss and mutual coupling characteristics under different relative humidity conditions, when bending the array, when placing the system on-body, and when covering it by different Textile layers. Reflection coefficient and gain patterns are simulated and measured for the Antenna system in free space and placed on the human body.

  • design of a low cost steerable Textile Antenna array operating in varying relative humidity conditions
    Microwave and Optical Technology Letters, 2012
    Co-Authors: Maria Lucia Scarpello, Dries Vande Ginste, Hendrik Rogier
    Abstract:

    A new wearable Textile Antenna array, operating in the 2.45 GHz industrial, scientific, and medical band, is described.Its purpose is to increase signal levels in off-body indoor communication links thanks to the array gain. In addition, multipath fading is reduced, thanks to its narrow beamwidth. As Antenna substrate, we compare two Textiles that have very different moisture regains, being cotton fabric and polyurethane foam and evaluate the array performance under varying relative humidity conditions in a controlled environment. Relative humidity has little influence on the mutual coupling, whereas for the reflection coefficients, the array constructed on foam material exhibits the most stable Antenna characteristics. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:40–44, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26510

Ping, Jack Soh - One of the best experts on this subject based on the ideXlab platform.

  • Textile Antenna with simultaneous frequency and polarization reconfiguration for wban
    IEEE Access, 2018
    Co-Authors: Shakhirul Mat Salleh, M I Jais, M Jusoh, Thennarasan Sabapathy, M R Kamarudin, A. H. Ismail, Mohamed Nasrun Osman, Mohamad Kamal A. Rahim, Philip Nobles, Ping, Jack Soh
    Abstract:

    This paper proposes the design of a reconfigurable circularly polarized Textile Antenna. The circular polarization feature in the proposed Antenna is generated by the edge truncation of a rectangular patch and the incorporation of a slotted ground plane, whilst the frequency reconfigurability feature is realized by slot size modification via the use of three embedded RF p-i-n diode switches. Consequently, the Antenna operation can be switched between six frequencies (1.57, 1.67, 1.68, 2.43, 2.50, and 2.55 GHz) depending on the seven switch configurations. The proposed Antenna is validated experimentally to be operable within the WBAN, WLAN, and GPS range in a compact and wearable format, with gains of up to 4.8 dBi.

  • Review of a dual band Textile Antenna
    2016 5th International Conference on Electronic Devices Systems and Applications (ICEDSA), 2016
    Co-Authors: H Rahman, Ping, Jack Soh, Nidhal Abdulaziz, Mohamed Fareq Abdulmalek, Hasliza, A. Rahim, Fatin Nabilah Giman, Badr M. Abdullah, Mohammad Tariqul Islam
    Abstract:

    This paper shows design and comparative performance analysis for a dual band Textile Antenna. The resonant frequencies used were 2.4 GHz and 5.6 GHz. The performance analysis for the Antennas was conducted using CST suite and HFSS simulation software. The Substrate used for the Antennas design was FELT (e r = 1.44). The parameters used for the comparison were the S-parameters and far-field gain in addition to the Voltage Standing Wave Ratio (VSWR) and radiation pattern. The results obtained for the two simulation software shows resemblance and agreement on the measured values and performance analysis.

  • low profile dual band Textile Antenna with artificial magnetic conductor plane
    IEEE Transactions on Antennas and Propagation, 2014
    Co-Authors: Sen Yan, Ping, Jack Soh, Guy A E Vandenbosch
    Abstract:

    A dual-band Textile Antenna loaded with an artificial magnetic conductor (AMC) plane is proposed for WLAN applications. Its dual-band operation is enabled by a rectangular patch in the 2.4 GHz band and a patch-etched slot dipole in the 5 GHz band. Since the AMC approaches a perfect magnetic conductor (PMC) in the 5 GHz band, the slot dipole can be located close to the ground. The proposed Antenna is fully fabricated using Textiles except for a feeding connector used for testing purposes and a via. Simulations and experiments agree well and validate that this low profile Antenna operates with a good reflection coefficient and a high front-to-back ratio (FBR) within the desired bands.

  • dual band suspended plate wearable Textile Antenna
    IEEE Antennas and Wireless Propagation Letters, 2013
    Co-Authors: Nurul Husna Mohd Rais, Ping, Jack Soh, Mohd Fareq Abdul Malek, Guy A E Vandenbosch
    Abstract:

    A novel, dual-band wearable Textile Antenna fabricated using conductive Textiles for operation in both ISM and HiperLAN applications is presented. Its concept is based on the suspended-plate Antenna. It features a 60 $\,\times\,$ 45 mm $^2$ rectangular radiating element suspended over a 80 $\,\times\,$ 60 mm $^{2}$ ground plane using a 5-mm foam substrate. The proposed rectangular radiator is modified using slots, slits, and shorting posts to enable dual-band resonance and broad bandwidths in both frequency bands: 277 MHz (2.22–2.48 GHz) in the ISM and 850 MHz (4.95–5.80 GHz) in the HiperLAN band. The Antenna radiates unidirectionally, and the ground plane avoids coupling to the users' body. The SP-WTA shows a total efficiency between 67% and 89% and a peak gain of 8.33 dB.

  • a novel 2 45 ghz switchable beam Textile Antenna sbta for outdoor wireless body area network wban applications
    Progress in Electromagnetics Research-pier, 2013
    Co-Authors: M I Jais, Ping, Jack Soh, M F Jamlos, M Jusoh, Thennarasan Sabapathy, M R Kamarudin, R B Ahmad, Azremi Abdullah Alhadi Azremi, Emi Izhanizam Bin Azmi, Guy A E Vandenbosch
    Abstract:

    A novel switchable beam Textile Antenna (SBTA) for wireless body area network (WBAN) applications is proposed. The SBTA is centrally-fed by a coaxial probe and the power distributed over four circular radiating elements. Four RF switches are integrated through which the SBTA is able to generate beam steering in four directions: 0 - , 90 - , 180 - , and 270 - , with a maximum directivity of 6.8dBi at 0 - . Its small size (88mm £ 88mm) and ∞exibility enables the structure to be easily integrated into safety jackets, rain coats, etc., for tracking, and search and rescue communication purposes. The structure successfully integrates reconflgurability into a wearable Textile Antenna.

Guy A E Vandenbosch - One of the best experts on this subject based on the ideXlab platform.

  • low profile dual band Textile Antenna with artificial magnetic conductor plane
    IEEE Transactions on Antennas and Propagation, 2014
    Co-Authors: Sen Yan, Ping, Jack Soh, Guy A E Vandenbosch
    Abstract:

    A dual-band Textile Antenna loaded with an artificial magnetic conductor (AMC) plane is proposed for WLAN applications. Its dual-band operation is enabled by a rectangular patch in the 2.4 GHz band and a patch-etched slot dipole in the 5 GHz band. Since the AMC approaches a perfect magnetic conductor (PMC) in the 5 GHz band, the slot dipole can be located close to the ground. The proposed Antenna is fully fabricated using Textiles except for a feeding connector used for testing purposes and a via. Simulations and experiments agree well and validate that this low profile Antenna operates with a good reflection coefficient and a high front-to-back ratio (FBR) within the desired bands.

  • dual band suspended plate wearable Textile Antenna
    IEEE Antennas and Wireless Propagation Letters, 2013
    Co-Authors: Nurul Husna Mohd Rais, Ping, Jack Soh, Mohd Fareq Abdul Malek, Guy A E Vandenbosch
    Abstract:

    A novel, dual-band wearable Textile Antenna fabricated using conductive Textiles for operation in both ISM and HiperLAN applications is presented. Its concept is based on the suspended-plate Antenna. It features a 60 $\,\times\,$ 45 mm $^2$ rectangular radiating element suspended over a 80 $\,\times\,$ 60 mm $^{2}$ ground plane using a 5-mm foam substrate. The proposed rectangular radiator is modified using slots, slits, and shorting posts to enable dual-band resonance and broad bandwidths in both frequency bands: 277 MHz (2.22–2.48 GHz) in the ISM and 850 MHz (4.95–5.80 GHz) in the HiperLAN band. The Antenna radiates unidirectionally, and the ground plane avoids coupling to the users' body. The SP-WTA shows a total efficiency between 67% and 89% and a peak gain of 8.33 dB.

  • a novel 2 45 ghz switchable beam Textile Antenna sbta for outdoor wireless body area network wban applications
    Progress in Electromagnetics Research-pier, 2013
    Co-Authors: M I Jais, Ping, Jack Soh, M F Jamlos, M Jusoh, Thennarasan Sabapathy, M R Kamarudin, R B Ahmad, Azremi Abdullah Alhadi Azremi, Emi Izhanizam Bin Azmi, Guy A E Vandenbosch
    Abstract:

    A novel switchable beam Textile Antenna (SBTA) for wireless body area network (WBAN) applications is proposed. The SBTA is centrally-fed by a coaxial probe and the power distributed over four circular radiating elements. Four RF switches are integrated through which the SBTA is able to generate beam steering in four directions: 0 - , 90 - , 180 - , and 270 - , with a maximum directivity of 6.8dBi at 0 - . Its small size (88mm £ 88mm) and ∞exibility enables the structure to be easily integrated into safety jackets, rain coats, etc., for tracking, and search and rescue communication purposes. The structure successfully integrates reconflgurability into a wearable Textile Antenna.

  • Measurement and performance of Textile Antenna efficiency on a human body in a reverberation chamber
    IEEE Transactions on Antennas and Propagation, 2013
    Co-Authors: Suzanne J. Boyes, Ping, Jack Soh, Guy A E Vandenbosch, Yi Huang, Neda Khiabani
    Abstract:

    With the advent of on-body communication research in recent years, there is a growing need for Antenna developments that satisfy a wide criteria (one being minimal efficiency degradation) in order to be integrated successfully onto human subjects; one promising development is the Textile Antenna. In this paper we investigate the efficiency performance of some newly designed small sized Textile Antennas on live human subjects using a reverberation chamber. First, we show that the material selection of these Textile Antennas can have a crucial effect on the on-body frequency detuning and efficiency levels, as via a comparison we determine that a lossier Textile Antenna in free space can actually outperform a higher free space efficient Textile Antenna when placed on-body. This has a profound impact on the material design choices for these small sized Antennas. Second, we investigate the performance effects under bent conditions and finally we show that the overall performance of the Textile Antenna can be mitigated somewhat by variations in on-body distances from the human subject. It is revealed that in some cases a small 20 mm distance from the body is sufficient for the radiation efficiency to approach the free space levels. Theoretical, simulated and experimental evidence is presented to verify the conclusions.

M I Jais - One of the best experts on this subject based on the ideXlab platform.

  • Textile Antenna with simultaneous frequency and polarization reconfiguration for wban
    IEEE Access, 2018
    Co-Authors: Shakhirul Mat Salleh, M I Jais, M Jusoh, Thennarasan Sabapathy, M R Kamarudin, A. H. Ismail, Mohamed Nasrun Osman, Mohamad Kamal A. Rahim, Philip Nobles, Ping, Jack Soh
    Abstract:

    This paper proposes the design of a reconfigurable circularly polarized Textile Antenna. The circular polarization feature in the proposed Antenna is generated by the edge truncation of a rectangular patch and the incorporation of a slotted ground plane, whilst the frequency reconfigurability feature is realized by slot size modification via the use of three embedded RF p-i-n diode switches. Consequently, the Antenna operation can be switched between six frequencies (1.57, 1.67, 1.68, 2.43, 2.50, and 2.55 GHz) depending on the seven switch configurations. The proposed Antenna is validated experimentally to be operable within the WBAN, WLAN, and GPS range in a compact and wearable format, with gains of up to 4.8 dBi.

  • Analysis of circular polarization Textile Antenna in bending condition
    2015 International Conference on Computer Communications and Control Technology (I4CT), 2015
    Co-Authors: M. S. Shakhirul, M I Jais, Muzammil Jusoh, A. H. Ismail, Muhammad Ramlee Kamarudin, Mohamed Nasrun Osman
    Abstract:

    A circular polarization (CP) Textile Antenna is designed for Global Positioning System (GPS) application. The truncated rectangular patch Antenna is has a full ground plane from Shieldit Super and felt fabric as a substrate. The proposed Antenna operates at 1.575 GHz with a good bandwidth from 1.540 to 1.625 GHz. The optimized chamfer has been made at two edges of a rectangular patch in order to produce a Left Hand Circular Polarization (LHCP) with a good axial ratio (AR) badwidth of 1.569 to 1.589 GHz. This manuscript also presents the analytical performances of CP Textile Antenna under bending condition that suitable for the on-body Antenna applications.

  • A Novel Beam Steering of Hybrid Switchable Beam Textile Antenna
    Microwave and Optical Technology Letters, 2013
    Co-Authors: M I Jais, M F Jamlos, Thennarasan Sabapathy, Muzammil Jusoh, Muhammad Ramlee Kamarudin
    Abstract:

    A novel hybrid switchable beam Textile Antenna (HSBTA) is proposed in this research. The HSBTA introduced by a coaxial probe technique to feed current flow to center of HSBTA and distribute the current to four circles of radiating elements. This research found that the integration of RF switches and electronic components is successfully embedded into wearable Textile Antenna using a silver-conductive epoxy adhesive. The four RF switches are then incorporated at four ideal locations of HSBTA's circle radiating elements to generate the beam steering ability with directivity as high as 6.8 dBi. With the help of particular RF switching scheme, the HSBTA has successfully tailored the beam to four different angles of 0°/360°, 90°, 180°, and 270° at single operating frequency of 2.45 GHz. Dimensionwise, 88 × 88 mm2 could lead the HSBTA to be deployed on smart garment for wireless body area network application. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1893–1897, 2013

  • a novel 2 45 ghz switchable beam Textile Antenna sbta for outdoor wireless body area network wban applications
    Progress in Electromagnetics Research-pier, 2013
    Co-Authors: M I Jais, Ping, Jack Soh, M F Jamlos, M Jusoh, Thennarasan Sabapathy, M R Kamarudin, R B Ahmad, Azremi Abdullah Alhadi Azremi, Emi Izhanizam Bin Azmi, Guy A E Vandenbosch
    Abstract:

    A novel switchable beam Textile Antenna (SBTA) for wireless body area network (WBAN) applications is proposed. The SBTA is centrally-fed by a coaxial probe and the power distributed over four circular radiating elements. Four RF switches are integrated through which the SBTA is able to generate beam steering in four directions: 0 - , 90 - , 180 - , and 270 - , with a maximum directivity of 6.8dBi at 0 - . Its small size (88mm £ 88mm) and ∞exibility enables the structure to be easily integrated into safety jackets, rain coats, etc., for tracking, and search and rescue communication purposes. The structure successfully integrates reconflgurability into a wearable Textile Antenna.

  • 2.45 GHz beam-steering Textile Antenna for WBAN application
    2013 IEEE Antennas and Propagation Society International Symposium (APSURSI), 2013
    Co-Authors: M I Jais, M F Jamlos, Thennarasan Sabapathy, Muzammil Jusoh, Muhammad Ramlee Kamarudin
    Abstract:

    A beam-streering Textile Antenna for wireless body area network (WBAN) applications is proposed and investigated in this work. This proposed Antenna is centrally-fed by a coaxial probe before currents are distributed to the four circular radiating elements. This novel structure successfully integrated the reconfigurable feature into a wearable Textile Antenna using electronic components. Four RF switches are integrated at an ideal location of each arm without any external circuit. With certain specific RF switch configurations, the proposed Antenna generated beam steering angles at 0°, 90°, 180° and 270° with a maximum directivity of 6.8 dBi at 0°/360°. It's small size of 88 mm2 square, flexible and wearable features enables this Antenna to be easily integrated onto safety jacket and rain coat for tracking, search and rescue based communication purposes.

Thennarasan Sabapathy - One of the best experts on this subject based on the ideXlab platform.

  • Textile Antenna with simultaneous frequency and polarization reconfiguration for wban
    IEEE Access, 2018
    Co-Authors: Shakhirul Mat Salleh, M I Jais, M Jusoh, Thennarasan Sabapathy, M R Kamarudin, A. H. Ismail, Mohamed Nasrun Osman, Mohamad Kamal A. Rahim, Philip Nobles, Ping, Jack Soh
    Abstract:

    This paper proposes the design of a reconfigurable circularly polarized Textile Antenna. The circular polarization feature in the proposed Antenna is generated by the edge truncation of a rectangular patch and the incorporation of a slotted ground plane, whilst the frequency reconfigurability feature is realized by slot size modification via the use of three embedded RF p-i-n diode switches. Consequently, the Antenna operation can be switched between six frequencies (1.57, 1.67, 1.68, 2.43, 2.50, and 2.55 GHz) depending on the seven switch configurations. The proposed Antenna is validated experimentally to be operable within the WBAN, WLAN, and GPS range in a compact and wearable format, with gains of up to 4.8 dBi.

  • Analysis reconfigurable frequency Textile Antenna in bending condition
    Advanced Science Letters, 2017
    Co-Authors: M. S. Shakhirul, Thennarasan Sabapathy, Muzammil Jusoh, A. H. Ismail, Hasliza A. Rahim, Muhammad Ramlee Kamarudin, Herwansyah Lago
    Abstract:

    In this paper, the analysis of reconfigurable frequency Textile Antenna in bending conditions is presented. The Antenna consists of a truncated rectangular patch and slotted ground plane made by ShieldIt Super. Felt fabric is used as an Antenna substrate. The proposed Antenna is capable to reconfigure at seven different states frequencies by using three PIN diodes. The Circular Polarization (CP) is achieved at the GPS operating frequency. Meanwhile, the proposed Antenna operates as a Linear Polarization (LP) at high operating frequencies. The performances of Antenna in bending conditions is analyze since the Textile Antenna usually attached on the body will easily bend due to the human body structures. Details of the simulation results for Antenna in bending condition are discussed.

  • A Novel Beam Steering of Hybrid Switchable Beam Textile Antenna
    Microwave and Optical Technology Letters, 2013
    Co-Authors: M I Jais, M F Jamlos, Thennarasan Sabapathy, Muzammil Jusoh, Muhammad Ramlee Kamarudin
    Abstract:

    A novel hybrid switchable beam Textile Antenna (HSBTA) is proposed in this research. The HSBTA introduced by a coaxial probe technique to feed current flow to center of HSBTA and distribute the current to four circles of radiating elements. This research found that the integration of RF switches and electronic components is successfully embedded into wearable Textile Antenna using a silver-conductive epoxy adhesive. The four RF switches are then incorporated at four ideal locations of HSBTA's circle radiating elements to generate the beam steering ability with directivity as high as 6.8 dBi. With the help of particular RF switching scheme, the HSBTA has successfully tailored the beam to four different angles of 0°/360°, 90°, 180°, and 270° at single operating frequency of 2.45 GHz. Dimensionwise, 88 × 88 mm2 could lead the HSBTA to be deployed on smart garment for wireless body area network application. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1893–1897, 2013

  • a novel 2 45 ghz switchable beam Textile Antenna sbta for outdoor wireless body area network wban applications
    Progress in Electromagnetics Research-pier, 2013
    Co-Authors: M I Jais, Ping, Jack Soh, M F Jamlos, M Jusoh, Thennarasan Sabapathy, M R Kamarudin, R B Ahmad, Azremi Abdullah Alhadi Azremi, Emi Izhanizam Bin Azmi, Guy A E Vandenbosch
    Abstract:

    A novel switchable beam Textile Antenna (SBTA) for wireless body area network (WBAN) applications is proposed. The SBTA is centrally-fed by a coaxial probe and the power distributed over four circular radiating elements. Four RF switches are integrated through which the SBTA is able to generate beam steering in four directions: 0 - , 90 - , 180 - , and 270 - , with a maximum directivity of 6.8dBi at 0 - . Its small size (88mm £ 88mm) and ∞exibility enables the structure to be easily integrated into safety jackets, rain coats, etc., for tracking, and search and rescue communication purposes. The structure successfully integrates reconflgurability into a wearable Textile Antenna.

  • 2.45 GHz beam-steering Textile Antenna for WBAN application
    2013 IEEE Antennas and Propagation Society International Symposium (APSURSI), 2013
    Co-Authors: M I Jais, M F Jamlos, Thennarasan Sabapathy, Muzammil Jusoh, Muhammad Ramlee Kamarudin
    Abstract:

    A beam-streering Textile Antenna for wireless body area network (WBAN) applications is proposed and investigated in this work. This proposed Antenna is centrally-fed by a coaxial probe before currents are distributed to the four circular radiating elements. This novel structure successfully integrated the reconfigurable feature into a wearable Textile Antenna using electronic components. Four RF switches are integrated at an ideal location of each arm without any external circuit. With certain specific RF switch configurations, the proposed Antenna generated beam steering angles at 0°, 90°, 180° and 270° with a maximum directivity of 6.8 dBi at 0°/360°. It's small size of 88 mm2 square, flexible and wearable features enables this Antenna to be easily integrated onto safety jacket and rain coat for tracking, search and rescue based communication purposes.