Design of circularly polarized Giuseppe Peano fractal patch antenna by the theory of Characteristic Mode

Oraizi, Homayoon; Poordaraee, Mohammad; Khajevandi, Seyfollah; Amini, Amrollah

doi:10.1109/iraniancee.2017.7985387

Cited by 11 publications

(8 citation statements)

References 6 publications

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“…In the proposed design, highlight of the antenna achieving, a modified monopole CPW fractal structure is incorporated to provide higher bandwidth at 900 MHz. e bandwidth is increased by 4-5% compared with the normal patch antenna employed, due to the usage of the FR 4 substrate and 20% improvement with the CPW monopole structure [32][33][34].…”

Section: Introductionmentioning

confidence: 99%

[Retracted] Effects of the FR 4 Substrate Realized in a Circularly Polarized UHF‐RFID Reader Antenna with Fractal Geometry for Enhancing Parameters

Varadhan

Subramanian

Chamatu

2021

Advances in Materials Science and Engineering

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The proposed RFID reader antenna progressed with perfect electric conductor (PEC) as the radiating element and FR 4 as the substrate to achieve circular polarization, enhancement in bandwidth, and read range. The design presents a CPW feed RFID antenna for near-field reading applications, between the range of 903 MHz to 929 MHz. The operating frequency of the proposed design is 900 MHz, axial ratio of the model is less than 3 dB, impedance bandwidth is 256 MHz, and axial bandwidth is 36 MHz, proving to be adequate for near-field RFID reader applications such as item-level tagging and smart shelf. The proposed antenna model is realized with fractal structure to achieve miniaturization. The developed antenna is optimized using EM software for numerical analysis. The designed antenna is fabricated, and the prototype is characterized in terms of dielectric constant and loss tangent. The obtained results indicate high correlation with simulation results.

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Section: Introductionmentioning

confidence: 99%

[Retracted] Effects of the FR 4 Substrate Realized in a Circularly Polarized UHF‐RFID Reader Antenna with Fractal Geometry for Enhancing Parameters

Varadhan

Subramanian

Chamatu

2021

Advances in Materials Science and Engineering

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“…Since the theory of characteristic mode (TCM) was proposed, 10 it has become a powerful tool to sort out the modal resonant behavior of antennas in various types 11–13 . Especially when analyzing microstrip antennas, the TCM is a more general theory than the cavity modal, which can be used to analyze arbitrarily shaped patches 14,15 . Furthermore, it also provides an easy way to understand the physics behind the key performances such as the bandwidth, polarization, and main beam directions, 16–18 which has been universally employed to guide patch antenna design 19,20 .…”

Section: Introductionmentioning

confidence: 99%

Novel method for reshaping TM ₀₀ mode radiation patterns of rectangular patch antenna by using characteristic mode analysis

Huang

Guo

et al. 2022

Int J RF Mic Comp-Aid Eng

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Based on characteristic mode analysis (CMA), a novel method for reshaping the TM 00 mode of the rectangular patch antenna (RPA) is presented. Initially, the RPA loaded by periodic shorting vias, as the basic structure for generating the TM 00 mode, is investigated by CMA. The nonbroadside pattern of TM 00 mode is revealed to be caused by the vertical currents on the shorting vias. And it can be transformed into a broadside direction by replacing the vertical vias with a new shorting structure possessing strong horizontal currents. Moreover, to further verify the feasibility of the proposed method, a compact CPW-fed aperture-coupled RPA for the WLAN application is designed. By simultaneously exciting a reshaped TM 00 mode, a fundamental TM 10 mode, and a slot mode, the proposed RPA can achieve dual-band performance with broadside radiation features. Finally, the proposed antenna is fabricated and tested. The results illustrate that the fabricated antenna can achieve good impedance matching and broadside radiation characteristics in 2.4-2.46 GHz and 5.1-5.6 GHz bands. K E Y W O R D Scharacteristic mode analysis, radiation pattern reshaping, rectangular patch antenna, TM 00 mode

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“…1 shows the Hilbert fractal and its iterations. The applications of fractal geometries are for the miniaturisation, multi-banding and increase of bandwidth of antennas [13][14][15][16] and used in microwave filters too [17,18]. The physical mechanism of miniaturisation by the application of fractals is the effective increase of current lengths.…”

Section: Introductionmentioning

confidence: 99%

Design of miniaturised‐element FSS based on 2.5‐dimensional closed‐loop Hilbert fractal

Khajevandi

Oraizi

Amini

et al. 2019

IET Microwaves, Antennas & Propagation

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A novel miniaturised frequency selective surface (FSS) unit cell is proposed based on the Hilbert fractal and 2.5‐dimensional (2.5‐D) metallic loop. For the increase of current path, both sides of substrate are used which are connected together by four vias. The dimension of FSS unit cell is obtained as 0.041λ0 × 0.041λ0 at the frequency of 2.47 GHz. The transmission coefficient is insensitive and independent of angle and polarisation of incident wave. A prototype model of the proposed FSS is fabricated and measured for the proof of concept. It is shown that it achieves better miniaturisation relative to the FSS reported in the literature.

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Design of circularly polarized Giuseppe Peano fractal patch antenna by the theory of Characteristic Mode

Cited by 11 publications

References 6 publications

[Retracted] Effects of the FR 4 Substrate Realized in a Circularly Polarized UHF‐RFID Reader Antenna with Fractal Geometry for Enhancing Parameters

[Retracted] Effects of the FR 4 Substrate Realized in a Circularly Polarized UHF‐RFID Reader Antenna with Fractal Geometry for Enhancing Parameters

Novel method for reshaping TM ₀₀ mode radiation patterns of rectangular patch antenna by using characteristic mode analysis

Design of miniaturised‐element FSS based on 2.5‐dimensional closed‐loop Hilbert fractal

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Design of circularly polarized Giuseppe Peano fractal patch antenna by the theory of Characteristic Mode

Cited by 11 publications

References 6 publications

[Retracted] Effects of the FR 4 Substrate Realized in a Circularly Polarized UHF‐RFID Reader Antenna with Fractal Geometry for Enhancing Parameters

[Retracted] Effects of the FR 4 Substrate Realized in a Circularly Polarized UHF‐RFID Reader Antenna with Fractal Geometry for Enhancing Parameters

Novel method for reshaping TM 00 mode radiation patterns of rectangular patch antenna by using characteristic mode analysis

Design of miniaturised‐element FSS based on 2.5‐dimensional closed‐loop Hilbert fractal

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Novel method for reshaping TM ₀₀ mode radiation patterns of rectangular patch antenna by using characteristic mode analysis