Circular polarised printed antenna array with broadband axial ratio

Nešić, Dušan; Nešić, A.; Brankovic, V.

doi:10.1109/aps.2003.1219383

Cited by 5 publications

(6 citation statements)

References 2 publications

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“…However, linear polarized bandwidth is the main disadvantage of this antenna. Aimed to create circular polarization with broadband AR bandwidth of planar printed monopole antennas; many designs have been reported .…”

Section: Antenna Geometry and Simulationmentioning

confidence: 99%

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Ultrawideband circularly polarized monopole antenna for millimeter‐wave applications

Elsheakh

Abdallah

2016

Micro & Optical Tech Letters

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This letter describes the design, and measurement of an ultrawideband (UWB) circularly polarized monopole antenna for millimeter‐wave short range wireless communications applications. This antenna is comprised elliptical loop monopole antenna with modified ground plane and connected by via to another loop on the other substrate side and coupled with small loop to create UWB without discontinuity bands. The −10 dB impedance bandwidth of the antenna provides 85 GHz which extended from 15 to 100 GHz. Moreover, multiband circularly polarized antenna provides 3 dB axial ratio (AR) bandwidth extends from 20 to 30 GHz, from 35 to 45 GHz and from 55 to 75 GHz. The average gain is around 4.5 dBi while the average radiation efficiency is 80% with 15% reduction as compared to original antenna size. The compact size and simple feed structure of the designed antenna make it a low cost solution for the integrated millimeter‐wave applications for wireless communications. The antenna with and without via are fabricated and measured to show the effect of via. The HFSS, FEM‐based 3D full wave electromagnetic solver simulator from Ansys is used for the design of the proposed antennas. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 59:189–194, 2017

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Section: Antenna Geometry and Simulationmentioning

confidence: 99%

“…Using the CP antenna this problem can be mitigated while allowing for reduction in interference from multipath reflections. Some papers have introduced 60 GHz CP antennas using PCB fabrication process .…”

Section: Introductionmentioning

confidence: 99%

Ultrawideband circularly polarized monopole antenna for millimeter‐wave applications

Elsheakh

Abdallah

2016

Micro & Optical Tech Letters

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“…A good review of various mmWave integrated circuit antennas can be found in [22]. Fur-thermore, several topologies of circularly polarized antenna have been proposed for the 60 GHz wireless communications [23][24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

A Wideband Circularly Polarized Patch Antenna for 60 GHz Wireless Communications

Zhou¹,

Liu²,

Xin³

2012

WET

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This paper presents the design of a fully packaged 60 GHz wideband patch antenna incorporating an air cavity and a fused silica superstrate. Circular polarization (CP) is realized by introducing a diagonal slot at the center of the square patch. By optimizing the patch and the slot dimensions, a high efficiency (>90%) microstrip fed CP antenna with an impedance bandwidth of 24% and a 6 dB axial ratio bandwidth of 21.5% is designed. A coplanar waveguide (CPW) to microstrip transition with λ/4-open-ended stubs are then designed to match the antenna to the CPW packaging interface. The experimental results of the final packaged antenna agree reasonably with the simulation results, demonstrating an impedance bandwidth of more than 26% and a 6 dB axial ratio bandwidth of 22.7%.

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Section: Introductionmentioning

confidence: 99%

“…To achieve high performance for circularly polarized patch antennas, some new structures were reported in the literature, such as antennas array, stack layer antennas, using periodic structures [3][4][5][6][7], etc.In this paper, a high performance circularly polarized low frequency patch antenna based on the compact fractal high-impedance surface EBG structure has been fabricated and experimented. The measured results show that the proposed circularly polarized patch antenna has good performance in impedance bandwidth, axial ratio (AR) bandwidth, and gain.…”

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confidence: 99%

High Performance Circularly Polarized Antenna Based on the Fractal EBG structure

Bao¹,

Ammann²,

Ruvio³

et al.

IEEE International Workshop on Antenna Technology Small Antennas and Novel Metamaterials, 2006.

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INTRODUCTIONCircularly polarized patch antennas have been widely applied in wireless communication system, global positioning system, etc., because of their low-profile, lightweight, ease of fabrication and low lost [1,2]. To achieve high performance for circularly polarized patch antennas, some new structures were reported in the literature, such as antennas array, stack layer antennas, using periodic structures [3][4][5][6][7], etc.In this paper, a high performance circularly polarized low frequency patch antenna based on the compact fractal high-impedance surface EBG structure has been fabricated and experimented. The measured results show that the proposed circularly polarized patch antenna has good performance in impedance bandwidth, axial ratio (AR) bandwidth, and gain. THE NOVEL EBG CIRCULARLY POLARIZED ANTENNA DESIGNA fractal structure is applied on the hi-impedance surface structure in order to reduce the size of EBG cell. The fractal cell is provided using the Minkowski loop generator. The initial shape is the square patch of side A (0 th iteration). For the 1 st and 2 rd iteration, each side is replaced with new scaled generator (A1=A/3; B1=0.5*A1, A2=A1/3, B2=0.5*A2), where A1, A2 and B1, B2 are segment and indentation lengths, respectively ( Fig.1). The period of the proposed EBG structure is 32.5mm, and A=27mm. A fractal patch connected to the continuous ground plane through a shorting pin constitutes a unit of the lattice. The radius of the shorting pin is 0.5mm.The dispersion characteristics of the fractal Hi-Impedance Surface EBG structure is calculated using the Finite Element Method (FEM). The results illustrated in Fig.2 show a wide bandgap from 1.27GHz to 2.05GHz.A square patch antenna with truncated opposite corners is designed as Fig.3, which excites both the TM 01 and TM 10 orthogonal modes, can produce circularly polarized fields. The square patch antenna size is 56.0×56.0m 2 , which have two opposite truncated corners with a side length of 2.8mm. The feed point is offset from the centre point of the square patch by 9.35 mm. The substrate used is FR4, which has a dielectric constant r ε =4.4, the thickness h=3.04mm and the ground plane size is 130mm×130mm. In general, because of the surface wave, the gain of the conventional patch antenna on a high permittivity substrate is low and the bandwidth is very narrow. In this paper, a novel circularly polarized antenna with a fractal EBG structure is presented. This fractal high impedance surface EBG structure is proposed because of its compact size and wide bandwidth features. The performance of this patch antenna is thus improved with the help of EBG structures. which illustrates an impedance bandwidth from 1660 to1712MHz below 10 dB. The measured axial ratio in the broadside direction against frequency is shown in Fig.6, which axial ratio bandwidth is from 1.678 to 1.705MHz. The measurement results show the centre frequency 1.695GHz has a minimum axial ratio, about 0.80dB. The XoZ plane and YoZ plane's radiation patterns at 1.695GHz are show...

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Circular polarised printed antenna array with broadband axial ratio

Cited by 5 publications

References 2 publications

Ultrawideband circularly polarized monopole antenna for millimeter‐wave applications

Ultrawideband circularly polarized monopole antenna for millimeter‐wave applications

A Wideband Circularly Polarized Patch Antenna for 60 GHz Wireless Communications

High Performance Circularly Polarized Antenna Based on the Fractal EBG structure

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