An Ultrawideband Printed Monopole Antenna Analyzed with the Theory of Characteristic Modes

Peñafiel-Ojeda, Carlos Ramiro; Andrade, Carlos Efraín; Baez-Egas, Ricardo; Santos, Vladimir Israel García

doi:10.1109/tla.2022.9757737

Cited by 8 publications

(3 citation statements)

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“…The starting point of the design was an antenna made by the authors using capacitively fed SIW cavity technology. [7]. A full-wave analysis was performed with CST studio software.…”

Section: Analysis and Results Of The Proposed Antennamentioning

confidence: 99%

Multiport broadband 5G MIMO antenna with very high isolation

Llanga-Vargas

Cabedo-Fabrés

Ferrando‐Bataller

et al. 2021

2021 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (APS/URSI)

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This paper presents a new unidirectional radiating structure with 4 independent radiation patterns, with an isolation of more than 24 dB, and with a bandwidth of 20 %, oriented for use in 5G indoor MIMO base stations. The element can be used as a building block for arrays with a number of antennas of 4x4 or more. The radiating elements are triangular cavities derived from a square cavity with the TMz 11 mode. The 4-port antenna has a very low profile, with a height of 5 mm and the dimensions of the ground plane are less than one wavelength.

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“…The starting point of the design was an antenna made by the authors using capacitively fed SIW cavity technology. [7]. A full-wave analysis was performed with CST studio software.…”

Section: Analysis and Results Of The Proposed Antennamentioning

confidence: 99%

Multiport broadband 5G MIMO antenna with very high isolation

Llanga-Vargas

Cabedo-Fabrés

Ferrando‐Bataller

et al. 2021

2021 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (APS/URSI)

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“…Te medium-wave radio signal system is a radio signal system that implements near-range signal transmission through the wave characteristics of the medium-wave band [19]. In the signal transmission process, the metal structure of the UHV transmission line tower will generate surface-induced currents due to the signal-transmitting antenna radiation feld [20][21][22]. Tese induced currents will form a new electric feld, namely, the secondary radiation feld [23,24].…”

Section: Simulation Modelingmentioning

confidence: 99%

Research on Electromagnetic Scattering Influence of Transmission Towers on Medium Wave Antenna Based on the Characteristic Mode Theory

Zong,

Jiao,

Zhang

et al. 2023

International Journal of Antennas and Propagation

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Electromagnetic scattering from UHV transmission towers is a major factor affecting the safety and stability of the surrounding antenna signal system. In this paper, the electromagnetic scattering effect of ±800 kV UHV DC transmission tower on the medium-wave antenna is investigated based on the characteristic mode theory (CMT). The simulation model of the tower and antenna is established, and the mode selection is carried out according to the percentage of the contribution of the characteristic mode to the total electromagnetic scattering. The effects of electromagnetic scattering under three conditions, namely, the number of towers, the distance between towers and antennas, and different frequencies, are investigated separately. The simulation results show that as the number of towers increases from 1 to 3, it leads to an increase in the electromagnetic scattering impact by about 49.5%. The shape distortion of the antenna’s directional map becomes more pronounced and is accompanied by the extension with the direction of the power line. The distance between the tower and the antenna is shortened from 500 m to 125 m, resulting in the growth of the influence of electromagnetic scattering by about 36.4%, and the directional gain of the antenna increases along the direction of the transmission line. As the frequency increases from 600 kHz to 1400 kHz, it leads to the rise of electromagnetic scattering effect of about 32.7% and the antenna directional map becomes more complicated. The research results will provide technical support for developing protective measures against electromagnetic scattering from UHV DC transmission towers to medium-wave antennas.

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“…Its characteristic is that the mode itself does not depend on the excitation, so the characteristics of the mode can be analyzed by studying the characteristics of the antenna itself in the absence of excitation, so as to determine the appropriate mode. Then, the required characteristic mode excitation of the antenna is carried out through the appropriate feeding mode to achieve the initial design objectives and performance indicators of the antenna [24][25][26][27][28][29][30][31][32][33][34]. Ref.…”

Section: Introductionmentioning

confidence: 99%

Design of a Monopole Antenna for WiFi-UWB Based on Characteristic Mode Theory

Wang,

You,

Yang

et al. 2024

PIER M

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In this paper, a WiFi-UWB multiband monopole antenna is designed, fabricated, and tested based on the characteristic mode theory, which mainly consists of an L-shaped metal, an "ok"-shaped metal radiator, and a T-shaped metal patch. The substrate dimensions are 40 × 43 × 1.6 mm 3 , featuring a rectangular ground plate at the substrate's bottom. The "ok"-shaped metal on the upper surface is composed of a metal ring and a curved finger-shaped metal. To improve impedance matching and broaden the bandwidth, strategic modifications are implemented. Specifically, a rectangular slot is introduced at the top of the L-shaped metal, and the T-shaped metal is rotated 90 • counterclockwise and positioned beneath the "ok"-shaped metal. The microstrip feed line, constructed from metal, incorporates a feed point. Simulation results indicate that the antenna effectively covers the frequency ranges of 2.30-2.50 GHz and 3.65-9.77 GHz. At the resonance point, the maximum return loss is below −40 dB, signifying superior directional radiation characteristics. The antenna design is characterized by a wide frequency band, simple structure, and holds significant practical value for multi-frequency communication.

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An Ultrawideband Printed Monopole Antenna Analyzed with the Theory of Characteristic Modes

Cited by 8 publications

References 0 publications

Multiport broadband 5G MIMO antenna with very high isolation

Multiport broadband 5G MIMO antenna with very high isolation

Research on Electromagnetic Scattering Influence of Transmission Towers on Medium Wave Antenna Based on the Characteristic Mode Theory

Design of a Monopole Antenna for WiFi-UWB Based on Characteristic Mode Theory

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