Theory of a Class of Planar Frequency-Independent Omnidirectional Traveling-Wave Antennas

Wang, J.J.H.

doi:10.1109/mape.2005.1617942

Cited by 5 publications

(6 citation statements)

References 4 publications

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“…22,23 Annular patches are considered as effective magnetic loops to calculate the total radiation field. 24 By adjusting the phase of each radiation field reasonably, total radiation and gain of the antenna can be enhanced, which is similar with the design principle of Yagi−Uda antennas. 25 Magnetic field of the single magnetic-loop in the far field can be expressed as 24…”

Section: Horizontal Gain Enhancement 41 | Gain Enhanced By Stack Of R...mentioning

confidence: 79%

“…Mushiake pointed out that magnetic loops or charge can effectively replace electric current or charge for calculation and research 22,23 . Annular patches are considered as effective magnetic loops to calculate the total radiation field 24 . By adjusting the phase of each radiation field reasonably, total radiation and gain of the antenna can be enhanced, which is similar with the design principle of Yagi−Uda antennas 25 .…”

Section: Horizontal Gain Enhancementmentioning

confidence: 95%

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Low‐profile omnidirectional antenna with broad bandwidth and high gain

Guo

Jing

Hui

et al. 2023

Micro & Optical Tech Letters

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In this study, a novel low profile wideband omnidirectional antenna is proposed. Horizontal dimension is utilized by introducing annular patches and near‐zero‐index metamaterials, instead of enhancing horizontal gain through increasing the profile of antenna. Measured results illustrate that horizontal gain of this antenna is enhanced to more than 2.5 dBi with 9.81% relative bandwidth (4.97−5.49 GHz) and low profile (0.034λ). Compared with other works, this novel antenna has obvious advantages in electromagnetic characteristics and physical structure, which has great potential in vehicular communications.

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Section: Horizontal Gain Enhancement 41 | Gain Enhanced By Stack Of R...mentioning

confidence: 79%

Section: Horizontal Gain Enhancementmentioning

confidence: 95%

Low‐profile omnidirectional antenna with broad bandwidth and high gain

Guo

Jing

Hui

et al. 2023

Micro & Optical Tech Letters

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“…Although the magnetic current does not exist in nature, it is usually used as the equivalence of a slot field in microstrip antennas. The magnetic filed in far-zone generated by a magnetic current loop can be described as [6]:…”

Section: Theory Of Antennamentioning

confidence: 99%

Effective Magnetic-Loop Array Antenna With Enhanced Gain in the Azimuth Plane

Hou

Zhao

2014

Antennas Wirel. Propag. Lett.

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Abstract-Based on a modified annular ring coupled circular patch antenna, a two-magnetic current-loop array antenna is designed, fabricated and characterized. The prototype antenna has omnidirectional radiation pattern in the azimuth plane, and the beam peak features an elevation angle of 18 degrees with a maximum gain of 4.2 dB. In the azimuth plane, a gain of 3.36 dB is achieved, which is about 1.6 dB higher than the value for a single loop antenna in the small radius extreme. The compact and low profile structure makes the antenna easy to be conformal to other surfaces.

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“…The equiangular planar spirals antennas adapt to the best means of transmission and reception at high frequencies, it is known for its characteristics of broadband . This proposed spiral antenna is included in the category ultrawideband (UWB), technology RF by presenting a wide range of frequency with values indicated above 2 GHz.…”

Section: Introductionmentioning

confidence: 99%

“…There is an increasing interest in UWB antennas due to expansion of applications in wireless communications, networking, detection, and sensing . The UWB is defined by IEEE organ and in accordance with their context; the proposed antenna becomes an exemplary model . The UWB system results in an attractive technology solution based on spectral overlap (overlay systems) as a great part of this spectrum band is occupied by services and communication technologies pre‐existing.…”

Section: Introductionmentioning

confidence: 99%

Spiral patch microstrip antenna frequency independent to applications in UWB

Morais

Silva

D’Assunção

2014

Microw. Opt. Technol. Lett.

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A new spiral patch microstrip antenna frequency independent, able to generate a range of frequencies for the transmission and reception of ultrawideband signals, is presented. This antenna operates perfectly with frequencies above 2 GHz without the need for adjustments in its parameters. Measured results have been compared with simulated results and found to be in a good agreement. The spiral antenna produces a remarkable bandwidth to VSWR 2:1. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:861–864, 2014

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Theory of a Class of Planar Frequency-Independent Omnidirectional Traveling-Wave Antennas

Cited by 5 publications

References 4 publications

Low‐profile omnidirectional antenna with broad bandwidth and high gain

Low‐profile omnidirectional antenna with broad bandwidth and high gain

Effective Magnetic-Loop Array Antenna With Enhanced Gain in the Azimuth Plane

Spiral patch microstrip antenna frequency independent to applications in UWB

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