Wideband High-Gain Circularly Polarized Planar Antenna Array for L Band Radar

Sekhar, M.; Kumari, E. Kusuma; Kumar, Alok

doi:10.1109/iccic.2017.8524447

Cited by 5 publications

(4 citation statements)

References 6 publications

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“…The board has layers that are each 4 mm thick, and its relative dielectric constant is 4.4. The dual band antenna in Figure 1 times the open space wavelength [5][6][7][8][9][10][11][12][13]. Both of the antenna structures were subjected to the simulation using the thinning effect at various levels, and the antennas have been evaluated at different frequencies in terms of gain.…”

Section: Introductionmentioning

confidence: 99%

Performance Evaluation of Thinning on Multifunctional Array Antennas

SaiVinay

2024

PIER C

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The array covers the L-band and S-band range frequencies used for multifunctional applications and operate between 1.61 GHz and 2.492 GHz. The quad frequency antenna resonates at four frequencies 1.176 GHz, 1.575 GHz, 1.6 GHz, and 2.492 GHz, which cover the L-band and S-band frequencies. The configurations of both antennas are layered patches. Performance measurements of the two antenna arrays have been compared, including side lobe level, return loss, and gain. Both the antennas are fabricated using affordable, easily accessible FR4 Epoxy. By implementing thinning for both array antennas, gain values are observed, and good performances are obtained.

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Section: Introductionmentioning

confidence: 99%

Performance Evaluation of Thinning on Multifunctional Array Antennas

SaiVinay

2024

PIER C

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“…In Govindarajan et al (2020), a dual-circular polarized antenna based on crossed-dipole for L-band satellite applications (1.1–1.6 GHz) has been proposed. In Sekhar et al (2017), a CP patch antenna array is introduced, which operates at 1.21–1.40 GHz for the L-band radar applications. In this design, the array comprises 16 rectangular patch antenna elements, which create a 4 × 4 array.…”

Section: Introductionmentioning

confidence: 99%

“…Nowadays, circularly polarized (CP) antennas have a wide range of satellite applications at L-band frequency (Xu et al , 2018; Siahcheshm et al , 2020; Fu et al , 2009). In recent years, various designs of CP L-band antennas are introduced and investigated, which used different techniques and have several applications (Govindarajan et al , 2020; Sekhar et al , 2017; Ameen and Chaudhary, 2019; Hong et al , 2012; Sun et al , 2019). In Govindarajan et al (2020), a dual-circular polarized antenna based on crossed-dipole for L-band satellite applications (1.1–1.6 GHz) has been proposed.…”

Section: Introductionmentioning

confidence: 99%

Wideband circularly polarized antenna with metallic walls for L-band applications

Pourbagher

Ghobadi

Nourinia

et al. 2021

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Purpose To achieve right-hand circular polarization (RHCP), a 3-dB Wilkinson power divider with a λ/4 phase shifter is used. The crossed-dipoles are placed at almost λ/4 elevation on the ground plane and connected to two coaxial cables. Experiments show that the impedance bandwidth of 49.40% (913.7–1,513.1 MHz) and axial ratio bandwidth (ARBW) of 22.88% (1,145.8–1,441.8 MHz) are achieved. Design/methodology/approach In this study, a wideband crossed-dipole antenna with circularly polarized (CP) radiation for L-band satellite and radar applications is presented. The proposed CP antenna comprises two orthogonally placed printed dipoles, a quadrature coupler and a box-shaped ground plane. Findings Furthermore, by fixing the box-shaped ground plane under the radiators, 5.13 dBic RHCP peak gain at 1,300 MHz and maximum half-power beamwidth (HPBW) of 84.5° at 1,170 MHz are realized for the antenna. Originality/value Eight metallic walls are connected to four corners of the substrate to stabilize the radiation properties in this study. Results show that the ARBW and front-to-back ratio are improved and the maximum HPBW around 127° across the operating frequency band is achieved. The proposed CP antenna is a good candidate for Global Positioning System (GPS) L2 (1.227 GHz), GPS L5 (1.176 GHz) and air route surveillance radar system at 1,215–1,390 MHz frequency band.

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“…However, this type of array antenna reqiures complex feed techniques with more number of the elements [3]. Couping between the elements degrade the performance of array like gain and axial ratio etc., [4][5]. To dimnish this inconvenience the spacing inbetween each antenna element is increased which leads to significant increase in antenna array size [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Design and Development of Miniaturized Planar Array Antenna for Multi Functional Radar

Kumar*,

Prasad

2019

IJITEE

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Miniaturized multi functional planner array antennas are presented for both L and S bands in this paper. A 3x8 array is proposed and the distance between antenna elements is only λ/2 so that size reduced significantly. The two dielectric substrates FR4 and RT duriod 6010 are used for different antennas. The antenna with FR4 substrate is fabricated and compared the results with simulated values. Coaxial feeding technique is adopted. Dual frequency multi functional array is simulated .Better gains, return losses and radiation patterns are obtained .The circular polarization is obtained by truncating the elements and it is useful for navigation. The results are compared with existing multi object tracking radar (MOTR).

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Wideband High-Gain Circularly Polarized Planar Antenna Array for L Band Radar

Cited by 5 publications

References 6 publications

Performance Evaluation of Thinning on Multifunctional Array Antennas

Performance Evaluation of Thinning on Multifunctional Array Antennas

Wideband circularly polarized antenna with metallic walls for L-band applications

Design and Development of Miniaturized Planar Array Antenna for Multi Functional Radar

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