Transmission Line Model For Lossy Inverted F Antenna Miniaturization

Berro, Rana; Bories, Serge; Delaveaud, Christophe

doi:10.1109/iceaa.2019.8879094

Cited by 2 publications

(4 citation statements)

References 7 publications

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“…Note that the conductor/radiator and the feeding system are photo-etched on the thin dielectric substrate. For this configuration, both transmission line and cavity models are most accurate and can be easily analysed [21], [22]. For an efficient conductor, (1) is used to calculate the resonating frequency for rectangular microstrip antennas as shown in Fig.…”

Section: A Microstrip Patch Antennamentioning

confidence: 99%

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Design and Manufacture of a Multiband Rectangular Spiral-Shaped Microstrip Antenna Using EM-Driven and Machine Learning

Aoad

2021

ELEKTRON ELEKTROTECH

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This paper presents a multiband rectangular microstrip antenna using spiral-shaped configurations. The antenna has been designed by combining two configurations of microstrip and spiral with consideration of careful selection of the substrate material, the dimension of the rectangular microstrip, the distance between the turned spiral, and the number of turns of the spiral. The efficiency and accuracy have been improved using machine learning algorithms as well. Machine learning has been studied to model the proposed antenna based on the performance requirements, which requires a sufficient training data to improve the accuracy. Three different machine learning models are applied to improve the accuracy and generalization performance and compared to simulation and measurement results. Simulation, measurement, and machine learning results confirm that the proposed antenna is a new electrically small and operating over a wide range of high-frequency bands between 1 GHz–4 GHz. Machine learning models have the best prediction ability with a mean square error (MSE) of 0.03, and 0.05. The antenna structure and size are compatible and suitable for several multi-band wireless mobile systems operating in L-band and S-band. The results, such as directivity, Half-Power Beamwidth, Voltage Standing Wave Ratio (VSWR), and S-parameter curves, are analysed and compared with the numerical formulation for both spiral and microstrip antennas.

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Section: A Microstrip Patch Antennamentioning

confidence: 99%

“…5. The spiral arm is reduplicated as a length of transmission lines of characteristic impedance [22]. Each step of the reduplication increases the spiral arm by 0.5 cm (0.00095 o  ).…”

Section: Fourth Configurationmentioning

confidence: 99%

Design and Manufacture of a Multiband Rectangular Spiral-Shaped Microstrip Antenna Using EM-Driven and Machine Learning

Aoad

2021

ELEKTRON ELEKTROTECH

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“…It is important to notice that the frequency agility of the antenna is different from the dynamic range of tunability expected from the MDM. The link between the two is not direct, and can be explained qualitatively, since it depends on antenna topology (see electrical antenna model from [19]), and on the material's location inside the antenna geometry, as shown in [10]. The MDM dynamic range ∆µ is driven by the static current intensity flowing on shorting wires and the induced magnetic field in the material.…”

Section: Antenna's Frequency Agility Measurementmentioning

confidence: 99%

“…The MDM dynamic range ∆µ is driven by the static current intensity flowing on shorting wires and the induced magnetic field in the material. The antenna's frequency response is governed by the resonance conditions of the transmission line [19]. The MDM is present on a small portion of the antenna, and mainly modifies the short-circuit conditions of the antenna (its inductance).…”

Section: Antenna's Frequency Agility Measurementmentioning

confidence: 99%

Tunable Magneto-Dielectric Material for Electrically Small and Reconfigurable Antenna Systems at Vhf Band

et al. 2020

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The main issue to tune controlled devices by the application of a DC magnetic field comes up against the high value of the field’s intensity required for their implementation. This work presents an implementation of magneto-dielectric materials (MDM) specifically manufactured for their integration in antenna devices operating in VHF band. The twofold objective is: (i) reduction in antenna size, (ii) frequency tuning of the antenna using a low intensity magnetic control. A notable permeability variation of MDM samples is observed when the symmetry of the lines of the control field, with an intensity less than 10 Oe, is consistent with the one of the structures in the magnetic domains. The MDM allows a miniaturization of 20% of an inverted-F antenna (IFA) antenna structure, and an agility of about 2.5% for a control field of 1.5 Oe.

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Transmission Line Model For Lossy Inverted F Antenna Miniaturization

Cited by 2 publications

References 7 publications

Design and Manufacture of a Multiband Rectangular Spiral-Shaped Microstrip Antenna Using EM-Driven and Machine Learning

Design and Manufacture of a Multiband Rectangular Spiral-Shaped Microstrip Antenna Using EM-Driven and Machine Learning

Tunable Magneto-Dielectric Material for Electrically Small and Reconfigurable Antenna Systems at Vhf Band

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