Textile linear polarization reconfigurable ring slot antenna for 5.8 GHz band

Vašina, Petr; Láčík, Jaroslav

doi:10.1109/comite.2017.7932311

Cited by 5 publications

(7 citation statements)

References 10 publications

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“…The performance of the antenna over a phantom is analyzed to verify its suitability for BAN applications. In another proposed textile-based substrate-integrated waveguide (SIW) circular ring-slot antenna [108], the inclination of the linear polarization is controlled in the range of angles 30 • by changing the position of the short strip to three places on the slot ring.…”

Section: Polarization-reconfigurable Antennasmentioning

confidence: 99%

Recent Developments and State of the Art in Flexible and Conformal Reconfigurable Antennas

et al. 2020

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Reconfigurable antennas have gained tremendous interest owing to their multifunctional capabilities while adhering to minimalistic space requirements in ever-shrinking electronics platforms and devices. A stark increase in demand for flexible and conformal antennas in modern and emerging unobtrusive and space-limited electronic systems has led to the development of the flexible and conformal reconfigurable antennas era. Flexible and conformal antennas rely on non-conventional materials and realization approaches, and thus, despite the mature knowledge available for rigid reconfigurable antennas, conventional reconfigurable techniques are not translated to a flexible domain in a straight forward manner. There are notable challenges associated with integration of reconfiguration elements such as switches, mechanical stability of the overall reconfigurable antenna, and the electronic robustness of the resulting devices when exposed to folding of sustained bending operations. This paper reviews various approaches demonstrated thus far, to realize flexible reconfigurable antennas, categorizing them on the basis of reconfiguration attributes, i.e., frequency, pattern, polarization, or a combination of these characteristics. The challenges associated with development and characterization of flexible and conformal reconfigurable antennas, the strengths and limitations of available methods are reviewed considering the progress in recent years, and open challenges for the future research are identified.

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Section: Polarization-reconfigurable Antennasmentioning

confidence: 99%

Recent Developments and State of the Art in Flexible and Conformal Reconfigurable Antennas

et al. 2020

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“…In the literature, there is a descent number of publications including smart and compact designs of reconfigurable textile wearable antennas that, for example, can switch between on/offbody modes, change the frequency of operation, vary their radiation patterns and/or polarisation, using flexible materials [11][12][13][14][15][16][17][18]. Most of the research publications deal with electrically reconfigurable antennas [19][20][21] in order to change the radiation pattern, polarisation, and resonant frequencies of the antenna between the on-body and off-body communication modes.…”

Section: Introductionmentioning

confidence: 99%

Use of conductive zip and Velcro as a polarisation reconfiguration means of a textile patch antenna

Tsolis

Michalopoulou

Alexandridis

2020

IET Microwaves, Antennas & Propagation

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Α feasibility study of using components such as conductive Velcro tape and zip fastener to change the polarisation of a textile patch antenna from linear (LP) to circular (CP) is presented. The antennas are designed to operate at 2.3–2.5 GHz frequency band, are made using felt substrate and conductive cloth and their size is 100.4 mm × 74.2 mm × 4.26 mm. It is proved, via simulations and measurements, that such components are strong candidates as means for polarisation reconfiguration of textile antennas. Both Velcro and zip textile patch antennas at the LP mode yield axial ratio (AR) larger than 10 dB at the operating frequency range. In the CP mode, the Velcro antenna gives AR equal to 3.1 dB at 2.35 GHz and the zip antenna 1 dB at 2.31 GHz. Repeatability measurements of interchanging polarisation modes (LP–CP) for both antennas have been conducted presenting acceptable repeatability. Great advantage of both antennas (Velcro and zip) is that the polarisation can be changed at will by a simple manipulation (detach the Velcro or unzip); thus, providing to the user the flexibility of adjusting the antenna characteristics depending on wearable application and environment of operation.

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“…Polarisation reconfigurability can be achieved by using a switchable radiator such as a microstrip patch [1], slot [2][3][4][5], or dielectric resonator [6]. The switching principles are generally based on controlling the on/off state of PIN diodes.…”

Section: Introductionmentioning

confidence: 99%

“…Other reconfigurability principles are based on a switchable feed network [7][8][9][10], a selection of a particular feeding port [11][12][13][14], a switchable proximity parasitic-element network [15,16], or mechanically rotating a metasurface relative to the radiating element [17]. These principles are used to control the inclination angle of the LP plane (called multi LP) [1,3,4,6,10,12,13,15] or switchability between LP and circular polarisation (CP) [2,5,7,11,16,17] or between two states of CP (left/right-handed CP) [8,9,14].…”

Section: Introductionmentioning

confidence: 99%

“…In this paper, we propose a beam-and polarisationreconfigurable 2 × 2 SIW ring-slot antenna array. Compared to [4], the single antenna element is studied using parametric simulations and its polarisation plane is electronically controlled utilising the PIN diode switching principle presented in [3]. The beam-forming network provides beam control in two orthogonal planes.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Beam‐ and polarisation‐reconfigurable SIW ring‐slot antenna array

Vašina¹,

Mikulasek²,

Láčík³

et al. 2018

IET Microwaves, Antennas & Propagation

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A beam‐ and polarisation‐reconfigurable substrate integrated waveguide (SIW) ring‐slot antenna array is proposed in this study. The 2×2 ring‐slot antenna array can generate beams in four different directions in two orthogonal linear polarisations (LPs). This is achieved by a feeding network consisting of four 90∘ SIW 3 dB couplers arranged in a multilayer structure for a compact antenna size of 131.6 mm × 65.8 mm × 4.9 mm. The antenna elements’ LP plane is controlled by PIN diodes, switched by a DC bias network integrated on the antenna substrate. The proposed antenna array is designed for the 5.8 GHz industrial, scientific and medical (ISM) frequency band and verified by measurements. Experimental results validate good impedance matching over the entire frequency band as well as the beam and polarisation reconfigurability.

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Textile linear polarization reconfigurable ring slot antenna for 5.8 GHz band

Cited by 5 publications

References 10 publications

Recent Developments and State of the Art in Flexible and Conformal Reconfigurable Antennas

Recent Developments and State of the Art in Flexible and Conformal Reconfigurable Antennas

Use of conductive zip and Velcro as a polarisation reconfiguration means of a textile patch antenna

Beam‐ and polarisation‐reconfigurable SIW ring‐slot antenna array

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