Dual‐band polarisation reconfigurable grounded fractal slot antenna

Saraswat, Kapil; Harish, A. R.

doi:10.1049/iet-map.2020.0542

Cited by 5 publications

(3 citation statements)

References 21 publications

(77 reference statements)

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“…It is not only possible to realize the FP antenna's reconfigurability by changing the feed antenna, but also to achieve reconfiguration by controlling the PRS [11,12]. Also, the direction of polarization of the antenna can be controlled by adding semiconductor devices, such as p-i-n diode and varactor diode [13,14]. Moreover, FP antennas have good applications in high-frequency bands, including the millimeter-wave band.…”

Section: Introductionmentioning

confidence: 99%

A High-Gain Wideband Fabry-Pérot Antenna Employing a Water-Based Frequency Selective Surface for Polarization- and RCS-Reconfigurability

Wang,

Liu,

Zhou

et al. 2024

International Journal of RF and Microwave Computer-Aided Engine

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A Fabry-Pérot (FP) antenna with wideband dual-polarization and radar cross section- (RCS-) reconfigurability adopting water-based frequency selective surface (FSS) is presented. The feed antenna is designed to switch between horizontal polarization (HP) and vertical polarization (VP) by controlling the on/off states of two PIN diodes. By optimizing the height of the FP resonant cavity, the proposed FP antenna achieves wideband and high-gain properties. In addition, the incident wave can be absorbed when the polymethyl methacrylate (PMMA) container is filled with water, which reduces the monostatic RCS. This design can be selected to be in stealth mode or radiation mode by injecting water into or extracting water from the water container. The measured results indicate that in stealth mode, the 10-dB RCS reduction band is from 4.5 GHz to 6.4 GHz, and the peak RCS reduction is 31.5 dB at 5.2 GHz. In the radiation mode, the realized gains of the FP antenna in both HP and VP at 5.2 GHz reach 16.6 dBi. Simulated and measured results verify the realizability and operational concept of the designed FP antenna.

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Section: Introductionmentioning

confidence: 99%

A High-Gain Wideband Fabry-Pérot Antenna Employing a Water-Based Frequency Selective Surface for Polarization- and RCS-Reconfigurability

Wang,

Liu,

Zhou

et al. 2024

International Journal of RF and Microwave Computer-Aided Engine

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show abstract

“…An example is using a fractal slot antenna with two protruding horizontal stubs, and four diodes are placed within the grounded fractal structure to realize the switching between RHCP and LHCP. 8 Another example is using a crossed dipole antenna which can easily generate a pair of orthogonal LPs, and the excitation magnitudes and phases of the dual polarizations can be properly controlled with six diodes. 9 In the design, five polarization operation modes can be achieved within an impedance bandwidth of 37%.…”

Section: Introductionmentioning

confidence: 99%

“…A few of past polarization reconfigurable designs are based on a single‐port antenna without feeding networks, and the polarization switching is realized by placing PIN diodes into proper positions of the antenna structure to control the excitations of different polarization modes. An example is using a fractal slot antenna with two protruding horizontal stubs, and four diodes are placed within the grounded fractal structure to realize the switching between RHCP and LHCP 8 . Another example is using a crossed dipole antenna which can easily generate a pair of orthogonal LPs, and the excitation magnitudes and phases of the dual polarizations can be properly controlled with six diodes 9 .…”

Section: Introductionmentioning

confidence: 99%

A scanning phased array based on a polarization reconfigurable antenna with compact aperture size

Liu

Row

2021

Int J RF Mic Comp-Aid Eng

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A compact antenna with tri-polarization switching is presented. The antenna is mainly composed of a monopole slot and a shorted loop, and the two radiating elements are connected in series and placed in a metallic box filled with dielectrics. To realize polarization switching, four PIN diodes are introduced into the antenna structure, and they cannot only suppress the excitation of the loop antenna but also vary the direction of the current flowing on the loop. Both simulated and measured results indicate that the proposed antenna can be operated in one linear polarization and dual circular polarization modes within an impedance bandwidth of around 15%; moreover, the aperture size of the antenna is about 0.09 λ 0 2 . Based on the polarization reconfigurable antenna, a 1 Â 8 phased array with an aperture size of 0.3 λ 0 Â 2.8 λ 0 is then developed. Simulated results show that the phased array operating in each polarization mode can give a gain fluctuation of smaller than 1.5 dB and a side lobe level of less than À10 dB when the beam is scanned from À60 to 60 .Experiments are also carried out, and their results have good agreements with the simulated data.

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Reconfigurable fractal antennas for future wireless applications: A comprehensive review

Patel,

Behera

2024

Int J Communication

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SummaryReconfigurable fractal antenna (RFA) design is always necessary for the continued development of wireless communication systems as the antenna is playing a vital part in device performance. The need for efficient radiators that are compact, low‐profile, inexpensive, and low weight has attracted scientists for their research works. As a result, numerous ideas were put forward by the researchers to attempt to resolve these problems by utilizing various kinds of fractal and reconfigurable antennas as well as their combinations. However, it is challenging to have a clear and transparent review of the various works with a large variety of solutions and their uniqueness. The advanced RFA design for wireless applications is reviewed in this study together with its most recent and pertinent counterparts. In Koch RFA, bandwidths enable selective bands spanning 1–6 GHz frequency range. Further, in band RFA design, the overall bandwidth ranges from 1.45 to 4.52 GHz (103%) with low gain; on the other hand, the crescent RFA achieves 5.67 dBi peak gain. Furthermore, in polarization RFA, the ARBWs are 17.61% (2.2–2.62 GHz) and 8.69% (2.91–3.18 GHz). The Hilbert RFA operates at 0.9 and 2.45 GHz with gains of 3.1 and 7 dBi, respectively. This article investigates a comprehensive review of the requirements for RFAs for wireless applications. Furthermore, a comparative study on different reconfigurability with switching techniques, fractal geometries, various RFA design approaches to enhance device performance, and their significance is discussed. Existing research challenges and future directions are also discussed as part of this article.

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Dual‐band polarisation reconfigurable grounded fractal slot antenna

Cited by 5 publications

References 21 publications

A High-Gain Wideband Fabry-Pérot Antenna Employing a Water-Based Frequency Selective Surface for Polarization- and RCS-Reconfigurability

A High-Gain Wideband Fabry-Pérot Antenna Employing a Water-Based Frequency Selective Surface for Polarization- and RCS-Reconfigurability

A scanning phased array based on a polarization reconfigurable antenna with compact aperture size

Reconfigurable fractal antennas for future wireless applications: A comprehensive review

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