A Broadband Dual Circularly Polarized Square Slot Antenna

Saini, R. G.; Dwari, Santanu

doi:10.1109/tap.2015.2496118

Cited by 122 publications

(108 citation statements)

References 10 publications

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“…A dual-band, dual-sense CP antenna fed by microstrip line is designed in [10], and those fed by CPW are presented in [11][12][13]. Two-port antenna configurations for wideband dual-sense [14,15] and dual-band, dual-sense [16] for polarization diversity systems are presented.…”

Section: Introductionmentioning

confidence: 99%

Dual-Band Dual-Sense Circularly Polarized Asymmetric Slot Antenna With F-Shaped Feed Line and Parasitic Elements

Saini¹,

Bakariya²

2018

PIER M

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Abstract-A novel dual-band and dual-sense circularly polarized coplanar waveguide (CPW) fed planar antenna with an asymmetric rectangular slot is presented. An F-shaped feed line is protruded from the signal line into the slot. Circular polarization is obtained due to the F-shaped feed line and asymmetry in the slot. Axial ratio bandwidth is significantly enhanced by placing parasitic elements adjacent to the feedline. The antenna has a size of 63.5 × 55 mm 2 . The measured results agree well with simulation. The measured impedance bandwidths are 26.04% (1.57 GHz-2.04 GHz) for the lower band and 18.93% (2.87 GHz-3.47 GHz) for the upper band. The measured 3 dB axial ratio bandwidths of lower band and upper bands are 22.22% (1.6 GHz-2 GHz) and 10.53% (3.15 GHz-3.5 GHz), with respect to 1.8 GHz (RHCP) and 3.325 GHz (LHCP), respectively.

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Section: Introductionmentioning

confidence: 99%

Dual-Band Dual-Sense Circularly Polarized Asymmetric Slot Antenna With F-Shaped Feed Line and Parasitic Elements

Saini¹,

Bakariya²

2018

PIER M

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“…Although dual-feed technique can provide better stability of the CP wave than single-feed, the latter provides a simpler feeding and reduced fabrication costs in array configuration. IBW improvement by using a slot and perturbation techniques have also been reported [17][18][19][20]; however, the problem of low gain arises due to its bi-directional radiation pattern. Gain enhancement is compromised by limitation of mounting space available for the onboard CP-SAR sensor.…”

Section: Introductionmentioning

confidence: 99%

Development of a Low Profile Wide-Bandwidth Circularly Polarized Microstrip Antenna for C-Band Airborne Cp-Sar Sensor

Santosa¹,

Sumantyo²,

Urata³

et al. 2018

PIER C

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Abstract-In this paper, a low-profile wide bandwidth circularly polarized microstrip antenna is proposed as element for a C-band airborne circularly polarized synthetic aperture radar sensor. Several bandwidth improvement techniques were proposed and implemented. In order to increase impedance bandwidth, the antenna is constructed using double-stacked substrate with low dielectric constant, modified radiating shape for multi-resonant frequency, and a circle-slotted parasitic patch. Generation of the circularly polarized wave employs a simple square patch with curve corner-truncation as radiating element. The asymmetric position of the feeding is attempted to improve the axial-ratio bandwidth. To avoid a complicated feed network, the antenna is fed by single-feed proximity-coupled microstrip line. The effect of copper-covering on the upper layer for decrease undesired radiation wave emitted by the feeding is also studied and presented. Measurement results show that the impedance bandwidth and axial ratio bandwidth are 20.9% (1,100 MHz) and 4.7% (250 MHz), respectively. Meanwhile the measured gain is 7 dBic at the frequency of 5.3 GHz.

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“…A slot antenna has the advantages of simple structure, low profile, light weight, easy impedance matching, broad bandwidth, and good radiation efficiency. Broad CP bandwidth can be achieved by utilizing square slot antennas [3][4][5][6][7]. In [4], the corners of the slot antenna are connected to achieve 35.7% CP bandwidth with a compact size.…”

Section: Introductionmentioning

confidence: 99%

“…In [4], the corners of the slot antenna are connected to achieve 35.7% CP bandwidth with a compact size. In [7], two asymmetric T-shaped feedlines and an inverted-L grounded strip with three straight strips are introduced to a slot antenna to obtain 60% CP bandwidth. Owing to the performance and compactness, open-slot (or monopole slot) antennas attract much attention.…”

Section: Introductionmentioning

confidence: 99%

A Simple v-Shaped Slot Antenna With Broadband Circular Polarization

Huang¹,

Wang²

2017

PIER Letters

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Abstract-In this paper, a simple broadband circular polarization (CP) V-shaped slot antenna is developed. The CP antenna consists of Z-shaped feedline with a stub and a patch, and symmetrically etched two right-angled V-shaped slots (an open slot and a closed slot) along the center line. The stub is introduced for multi-resonances to obtain broadband. The broad CP and impedance bandwidths overlap by the symmetrically etched right-angled V-shaped closed slot along the center line and the Z-shaped feedline placed in a proper position. The measured results show that the proposed antenna has a broad overlapped 3-dB axial ratio (AR) bandwidth and −10 dB impedance bandwidth of 71% (2.19-4.6 GHz).

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A Broadband Dual Circularly Polarized Square Slot Antenna

Cited by 122 publications

References 10 publications

Dual-Band Dual-Sense Circularly Polarized Asymmetric Slot Antenna With F-Shaped Feed Line and Parasitic Elements

Dual-Band Dual-Sense Circularly Polarized Asymmetric Slot Antenna With F-Shaped Feed Line and Parasitic Elements

Development of a Low Profile Wide-Bandwidth Circularly Polarized Microstrip Antenna for C-Band Airborne Cp-Sar Sensor

A Simple v-Shaped Slot Antenna With Broadband Circular Polarization

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