Miniaturized designs of circularly polarized slot antenna

Row, Jeen‐Sheen; Lin, Yu-De

doi:10.1002/mop.28379

Cited by 12 publications

(10 citation statements)

References 9 publications

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“…Also, this antenna with various techniques has been considered such as the L‐shaped coupling feed line with the square‐ring slot for CP antenna, the technique of dual slot with the dual ring, and Navigation Satellite System with two parallel rings . CPW feed method has been investigated in slot antennas to gain CP features, such as C‐shaped unsymmetrical strips and triangular truncating procedure …”

Section: Metamaterials For Circular Polarizationmentioning

confidence: 99%

Metamaterial loads used in microstrip antenna for circular polarization: Review

Zarrabi

Pirooj

Pedram

2019

Int J RF Microw Comput Aided Eng

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The metamaterial elements and structures have been noticed for obtaining circular polarization (CP) while developing various procedures. In this paper, we have mentioned some of these cases and compared the metamaterial loads effect on antenna current distribution. We have classified them into four categories. The first case covers patch antenna based on composite right/left‐handed method, where the metamaterial has been used for changing the current distribution in the loop form. The second case has been achieved by radome and metasurface. In the third model, the interaction between feed and metamaterial load has been considered and the last case has been made by the metamaterial load with truncated structure. The metamaterial loading has been modeled based on Nicolson‐Ross or transmission/reflection techniques for extracting the permittivity and permeability. While the microstrip slot antennas are attractive for wider bandwidth, the truncated structure can change the current for achieving CP. Here, we have studied the antenna for wireless and WiMAX applications.

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Section: Metamaterials For Circular Polarizationmentioning

confidence: 99%

Metamaterial loads used in microstrip antenna for circular polarization: Review

Zarrabi

Pirooj

Pedram

2019

Int J RF Microw Comput Aided Eng

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“…On the other hand, it is feasible to generate a single-layer CP slot antenna by adjusting the geometrical topology of the slot configuration or the feeding line. Some of the prevalent reported methods use the following: an embedded inverted-L ground strips with an annular patch (Shirzad et al, 2014), an asymmetric T-shaped strip (Pan et al, 2012), a trapezoidal patch (Kalhor et al, 2012), an L-shaped strip with a cross-shaped ring-slot (Kumar & Sinha, 2009), a C-strip metal within the circular slot (Chen et al, 2012), a square ring-slot with an L-shaped strip (Row & Lin, 2014), and an open slot (Jan et al, 2013). For having an utilizable CP antenna with wide bandwidth, a simple structure, and compact size, planar configurations are critical characteristics.…”

Section: Introductionmentioning

confidence: 98%

“…For having an utilizable CP antenna with wide bandwidth, a simple structure, and compact size, planar configurations are critical characteristics. Some of these methods can widen the bandwidth but are complicated in practical works (Kumar & Sinha, 2009) Shirzad et al (2014), and Row and Lin (2014) have achieved CP property but have narrow axial ratio (AR) bandwidth that range from 4 to 27%. In addition, the proposed CP antennas are specified by a large size (Kumar & Sinha, 2009;Kalhor et al, 2012;Chen et al, 2012;Pan et al, 2012), or non-planar configuration (Kumar & Sinha, 2009;Pan et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Broadband Circularly Polarized Stair-Shaped Slot Antenna

Shirazi

Honarvar

2015

Electromagnetics

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This article is introducing a novel broadband circularly polarized slot antenna fed by a coplanar waveguide, with simple layer geometry. A simple design procedure, made of seven stages, is extended to achieve the required performances. The antenna consists of two linked rectangular slots and two asymmetrical L-shaped slots embedded in opposite corners of stair-shaped ground plane with two conducting rectangles that are added to the ground plane in conjunction with a U-shaped strip. This strip is protruded into the slot from the signal line of the coplanar waveguide. By using the U-shaped patch and two conducting rectangles, two orthogonal electric fields with quadrature phase difference, it is possible to excite a circularly polarized wave. The proposed antenna, with a size of 45 × 45 × 0.8 mm 3 is enabled to operate across 1.9 to 4.5 GHz with a fractional impedance bandwidth of 81.25%; for S 11 less than -10 dB. The 3-dB axial ratio bandwidth is enclosed by the voltage standing wave ratio ≤ 2 impedance bandwidth, and can be up to 48.2% (2.33 to 3.81 GHz), which is appropriate for wireless local area network (2.4 to 2.484 GHz), digital multimedia broadcasting (2.605 to 2.655 GHz), and worldwide interoperability for microwave access (3.3 to 3.8 GHz) systems. The proposed design has been investigated by the simulated and measured results.

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“…In addition, truncation or corner stubs are the conventional methods for achieving UWB characteristics with circular polarization by coplanar waveguide feed (CPW) [23,24]. However, there exist various methods for generating circular polarization in slot antennas such as square-ring slot antenna fed with an L-shaped coupling strip for Wi-Fi application at 2.5 GHz [25], dual-square-ring-shaped slot for WiMAX applications at 3 GHz [26], and two-slot rings for 1.6 and 2.5 GHz [27]. CPW feed slot antennas are noticed for their facility of achieving circular polarization by means of two asymmetrical C-shaped strips with dual-band characteristics at 2.5 and 5.2 GHz [28] and corner truncated ground [29].…”

Section: Introductionmentioning

confidence: 99%

A Dual Band Slot Antenna for Wireless Applications With Circular Polarization

Pirooj¹,

Naser‐Moghadasi²,

Zarrabi³

et al. 2017

PIER C

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Abstract-In recently developed wireless communication systems, circular polarization (CP) antennas are used for communication links to reduce the natural loss effect in receivers. Therefore, in this paper, a dual-band microstrip slot antenna based on a parallel split ring resonator with circular and linear polarization which can be used for wireless and WiMAX applications is presented. The final antenna to design is based on inspired split ring resonators (SRR) to achieve circular polarization and compact size and with special parallel form of the SRR and straight feed line. We have achieved higher bandwidth in the requested frequency range with dual-band characteristics. The final antenna has a bi-directional pattern with circular polarization at the range of 2.9-3.65 GHz and bandwidths of 2-3.6 and 3.8-4.8 GHz with VSWR < 2 for WLAN, Bluetooth and radar applications for IEEE WLAN protocol with gain of 5-6 dBi, respectively. The size of the prototype patch antenna is 40×40 mm 2 . It is designed and fabricated on an FR-4 low cost substrate with ε r = 4.4 and a thickness of 1.6 mm. It is simulated using HFSS full wave software. In addition, the experimental results are presented and compared with simulation for VSWR, radiation patterns and axial ratio. The periodic analysis has been used for extracting the metamaterial parameters.

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Miniaturized designs of circularly polarized slot antenna

Cited by 12 publications

References 9 publications

Metamaterial loads used in microstrip antenna for circular polarization: Review

Metamaterial loads used in microstrip antenna for circular polarization: Review

Broadband Circularly Polarized Stair-Shaped Slot Antenna

A Dual Band Slot Antenna for Wireless Applications With Circular Polarization

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