Enhancing Bandwidth of CP Microstrip Antenna by Using Parasitic Patches in Annular Sector Shapes to Control Electric Field Components

Lin, Jiang-Feng; Chu, Qing‐Xin

doi:10.1109/lawp.2018.2825236

Cited by 65 publications

(36 citation statements)

References 12 publications

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“…The microstrip patch antenna has advantages such as low fabrication cost, light in weight, capable of supporting multiple frequency bands, easily etched on any PCB and integrated them with MICs or MMICs [1][2][3]. However, it has disadvantages such as low gain, large PCB structure, and narrow bandwidth due to conductor losses, surface wave losses, 1111 and dielectric losses [4,5]. Several studies investigating bandwidth enhancement of microstrip antenna have been carried out by [6,7].…”

Section: Introductionmentioning

confidence: 99%

Bandwidth enhancement and miniaturization of circular-shaped microstrip antenna based on beleved half-cut structure for MIMO 2x2 application

Praptodiyono¹,

Herudin²,

Aribowo³

et al. 2019

IJECE

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In this paper, circular-shaped microstrip antenna was simulated, fabricated, and measured accordingly. As the novelty, to enhance bandwidth and reduce antenna size, beleved half-cut microstrip structure is proposed. Further, this proposed antenna structure will be applied to multiple input multiple output (MIMO) antenna 2´2. Therefore, this research was investigated conventional circular shape antenna (CCSA), circular shaped beleved antenna (CSBA), and MIMO circular shaped beleved antenna (MIMO-CBSA) as Model 1, Model 2, and Model 3, respectively. An FR4 substrate with er= 4.4, thickness h=1.6 mm, and tan d=0.0265 was used. The simulation has been conducted using Advanced Design System (ADS). The antenna CCSA/CSBA/ MIMO-CBSA achieve 1.831GHz/2.265 GHz/2.256 GHz, -15.13dB/-17.37dB/-17.25 dB, 1.42/1.31/1.33, and 1.474/2.332/2.322 for center frequency, reflection coefficient, VSWR, and bandwidth, respectively. This antenna has a size 63x90 mm and 51.5x90 mm for CCSA (Model 1) and CSBA (Model 2), respectively. After the structure of MIMO 2´2 was applied, the size of antenna MIMO-CBSA (Model 3) became 180 mm x 180 mm with a mutual coupling (S21)=-26.18 dB and mutual coupling (S31)=-26.41 dB. The result showed that proposed antenna CSBA (Model 2) has wider-bandwidth of 58,2% and smaller-size of 18.2%. Furthermore, after CSBA (Model 2) structure was applied to MIMO 2´2 (Model 3) and the MIMO antenna obtain good mutual coupling (<-15dB). Moreover, the measured results are good agreement with the simulated results. In conclusion, all of these advantages make it particularly valuable in multistandard antenna applications design such as GSM950, WCDMA1800, LTE2300, and WLAN2400.

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Section: Introductionmentioning

confidence: 99%

Bandwidth enhancement and miniaturization of circular-shaped microstrip antenna based on beleved half-cut structure for MIMO 2x2 application

Praptodiyono¹,

Herudin²,

Aribowo³

et al. 2019

IJECE

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show abstract

“…Circularly polarized (CP) microstrip antennas are widely used in radar, navigation, and satellite communication realms owing to their small size, low profile, great flexibility, and many other advantages [1]. Circular polarization is produced by using the feeding structure to excite two orthogonal linearly polarized modes with a 90 • phase difference [2][3][4][5][6][7][8][9][10][11][12][13]. A single-fed circularly polarized patch antenna can be designed by slotting or chamfering on a square patch [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

“…The IBW is 16.7%, and the ARBW is 3.2%. Some structures, which enhance the bandwidth of single-fed circularly polarized patch microstrip antennas, are studied [9][10][11]. Reference [9] designs a circularly polarized antenna composed of a U-slot square patch with truncated corners supported by a substrate with dielectric constant of 10.02.…”

Section: Introductionmentioning

confidence: 99%

“…The measured impedance bandwidth (S 11 < 10 dB) and 3-dB axial ratio bandwidth of the antenna are about 9.0% and 4.0%, respectively. Reference [11] finds that the bandwidth of a circularly polarized microstrip antenna can be enhanced by using two annular-sector-shaped parasitic patches. Much wider impedance and AR bandwidth can be achieved for dual-feeds [12,13] and multiple linearly polarized radiating elements [14].…”

Section: Introductionmentioning

confidence: 99%

“…Compared with conventional microstrip antenna with a substrate, the advantage of the proposed structure as a circularly polarized antenna is the high gain which is due to less amount of stored energy under the metalized patch. Table 1 shows a comparison of the proposed antenna with other single-fed circularly polarized microstrip antennas [2,3,5,6,[8][9][10][11] presented in recent literature. The comparison shows that this antenna has a higher gain.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Single-Fed High-Gain Circularly Polarized Microstrip Antenna

Chen¹,

Li²,

Yang³

et al. 2019

PIER M

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In this paper, a single-fed high-gain circularly polarized microstrip antenna is proposed. The circular polarization is obtained by two unequal-length arc-shaped radiation patches, which excite two orthogonal linearly polarized modes with a 90 • phase difference. The antenna is excited by coaxial feed. The proposed circularly polarized antenna consists of two arc-shaped radiation patches and a ground plane, which has a simple structure and a higher gain than 10.0 dB. The antenna is fabricated and measured to verify the design. The measured results are in good agreements with the simulated ones. The measured results show that the impendence bandwidth (IBW) for S 11 < −10 dB is 16.7% (3.78-4.47 GHz), and the axial-ratio bandwidth (ARBW) for AR < 3 dB is 3.6% (4.09-4.24 GHz). Further, the gain is higher than 10.0 dB from 4.09 to 4.24 GHz. The antenna radiation pattern performs well over the whole band, and the peak gain can reach 10.67 dB at 4.11 GHz. It is a good candidate for advanced wireless communication systems.

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A compact wideband circularly polarized antenna with two pairs of driven patch arrays

Liu

Cao²,

Wang

2020

Int J RF Microw Comput Aided Eng

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In this article, a new wideband circularly polarized (CP) antenna is presented. The antenna is composed of a circular-loop feeding structure which provides sequential phase (SP), four primary-parasitic crown patches and four secondaryparasitic crown patches. The circular-loop SP structure is used to feed the two pairs of crown patches by a capacitively coupled way. The presented antenna features a wide 10-dB impedance bandwidth (IBW) of 23% (6 GHz, 5.31-6.69 GHz), and a wide 3-dB axial ratio bandwidth (ARBW) of 11.1% (5.875 GHz, 5.55-6.2 GHz). The proposed antenna features compact structure and broad 3 dB-ARBW, which could include the WLAN (5.725-5.85 GHz), ITS (5.8 GHz), and WIFI (5.85-5.925 GHz) band.

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Enhancing Bandwidth of CP Microstrip Antenna by Using Parasitic Patches in Annular Sector Shapes to Control Electric Field Components

Cited by 65 publications

References 12 publications

Bandwidth enhancement and miniaturization of circular-shaped microstrip antenna based on beleved half-cut structure for MIMO 2x2 application

Bandwidth enhancement and miniaturization of circular-shaped microstrip antenna based on beleved half-cut structure for MIMO 2x2 application

Single-Fed High-Gain Circularly Polarized Microstrip Antenna

A compact wideband circularly polarized antenna with two pairs of driven patch arrays

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