Broadband CPW-Fed Circularly-Polarized Slot Antenna With an Open Slot

Jan, Jen-Yea; Pan, Chih-Chuan; Chiu, Kuo-Yung; Chen, Hua‐Ming

doi:10.1109/tap.2012.2231926

Cited by 140 publications

(94 citation statements)

References 13 publications

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“…Circularly polarized mode can be realized by various antenna types, such as slot antenna [1][2][3][4][5][6][7][8], coplanar waveguide model [9], and dielectric resonator antenna [10]. Among these antennas, slot antenna has attracted much attention due to the advantagious features of simple structure, wide band, and easy integration.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Single-Layer and Compact Circularly Polarized Wideband Slot Antenna Based on ``Bent Feed''

Wu¹,

Wei²,

Li³

et al. 2018

PIER Letters

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Abstract-This communication presents a novel compact and wideband circularly polarized (CP) slot antenna fed by microstrip feedline. The proposed antenna consists of a corner-truncated square-ring slot patch and a novel bent strip. The CP radiation is formed by using the bent strip to excite CP resonance modes. By intruding several open stubs to the corners of the square-ring slot patch, the impedance matching and axial ratio (AR) bandwidth are improved. The measured results show that the proposed antenna has the advantage of wideband characteristics in terms of an impedance bandwidth of 90.59% (3.2-8.5 GHz) and 3-dB axial ratio bandwidth of 84.2% (3.3-8.1 GHz). The principle as well as simulated and measured results of the proposed antenna is revealed.

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Section: Introductionmentioning

confidence: 99%

“…Using an additional open-circuited stub near the feeding port can broaden the impedance bandwidth. Table 1 manifests the performances of the proposed antenna and the antennas in [1][2][3][4][5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

A Single-Layer and Compact Circularly Polarized Wideband Slot Antenna Based on ``Bent Feed''

Wu¹,

Wei²,

Li³

et al. 2018

PIER Letters

View full text Add to dashboard Cite

show abstract

“…The use of circularly polarized (CP) antennas [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21] has gained much momentum in the wireless engineering community due to their ability to suppress multipath fading and doing away with the need for arranging the orientation of transmit and receive antennas. Also, CP antennas provide better mobility and immunity to adverse weather conditions than linearly polarized antennas.…”

Section: Introductionmentioning

confidence: 99%

“…Such perturbations include introducing RF switch controlled rectangular discontinuities on patches [4]; using a feeding mechanism made up of a hook shaped feed line and Γ-shaped slots in a patch antenna [5]; employing cross shaped slots in patch antennas [6,7]; adding stubs and notches to square slots [8]; inserting grounded inverted L strips in the radiating slots of slot antennas [9,10]; using a lightening shaped feedline [11,12]; using an L-slot in place of the traditional rectangular, circular or square slot of a slot antenna [13,14]; improving the ground plane by adding stubs to it or creating slots in it [15][16][17][18][19] or by embedding a pair of hat shaped patches in an annular ring slot and employing a deformed feedline [20]. However, most of the existing antennas posses large sizes or narrow axial ratio bandwidths (ARBW) that do not cover enough wireless applications.…”

Section: Introductionmentioning

confidence: 99%

Broadband Circularly Polarized Cross Shaped Slot Antenna With an Improved Feedline

Kwame¹,

Ampoma²,

Hu³

2017

PIER C

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Abstract-A broadband circularly polarized cross-shaped slot antenna with a parasitic cross-shaped patch and an improved feedline is proposed for wireless applications between 3-6 GHz. In order to achieve a wide axial ratio bandwidth that is totally enclosed within a wide impedance bandwidth, a wide cross slot in the ground plane and an L-shaped strip attached to the lower section of the feedline are employed. This design presents a technique for achieving an axial ratio (AR) bandwidth for a single fed antenna that is wider than most of the single fed slot antennas that currently exist. The proposed antenna with a compact size of 30 mm × 30 mm × 1.6 mm is fabricated and measured. A measured broadside 3 dB axial ratio bandwidth of 68.7% (3.1-6.35 GHz) within a measured impedance bandwidth of 84.1% (2.61-6.4 GHz) for S 11 < −10 dB is obtained. A measured peak gain of 3.8 dBi is obtained within the axial ratio bandwidth. The obtained results show that the antenna can be used for wireless devices that operate in the 3.3-3.8 GHz and 5.15-5.35/5.725-5.825 GHz (specified by IEEE 802.11a) bands for wireless standard technologies.

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“…In order to achieve circularly polarized characteristic, two orthogonal modes with equal amplitude and a phase difference (PD) of 90 • must be excited. Several CP slot antennas have been introduced [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]. Open slot antenna have been presented and discussed in [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

A CPW-Fed Dual-Band Slot Antenna With Circular Polarization

Xin¹,

Feng²,

Tao³

2016

PIER Letters

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Abstract-In this paper, a coplanar waveguide (CPW)-fed dual-band slot antenna with circular polarization (CP) is presented. In order to achieve CP characteristic, an asymmetric slot and F-shaped end patch are introduced to a conventional rectangular slot antenna. Moreover, by cutting a T-shaped notch on the ground plane, the axial ratio (AR) bandwidth (ARBW) can be extended. The antenna shows left-hand CP (LHCP) radiation in the boresight direction (i.e., +Z direction) at both ARBWs. The proposed antenna is fabricated and measured. The measured results have a good agreement with the simulated ones. The measured impedance bandwidths (|S 11 | < −10 dB) are 1.08 GHz (2.02 to 3.10 GHz, 40% at 2.70 GHz) and 2.31 GHz (4.57 to 6.88 GHz, 39.8% at 5.8 GHz). The two measured ARBWs are 600 MHz (2.60 to 3.20 GHz, 22.2% at 2.70 GHz) and at least 1.15 GHz (4.85 to 6.0 GHz, 19.8% at 5.8 GHz) at the lower and upper bands, respectively.

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Broadband CPW-Fed Circularly-Polarized Slot Antenna With an Open Slot

Cited by 140 publications

References 13 publications

A Single-Layer and Compact Circularly Polarized Wideband Slot Antenna Based on ``Bent Feed''

A Single-Layer and Compact Circularly Polarized Wideband Slot Antenna Based on ``Bent Feed''

Broadband Circularly Polarized Cross Shaped Slot Antenna With an Improved Feedline

A CPW-Fed Dual-Band Slot Antenna With Circular Polarization

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