Performance enhancement of cross dipole circularly polarized antenna using parasitic elements

Wang, Lei; Zhu, Zhangming

doi:10.1002/mop.33018

Cited by 5 publications

(3 citation statements)

References 25 publications

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“…These performance parameters and radiation characteristics could reach any required bandwidth by controlling the size and shape, the proper selection of the type of excitation feed, their placements, etc. Various techniques have been used to broaden the microstrip antenna's bandwidth and permit it to function as a multiband antenna [4][5][6][7][8][9]. In modern planar (microstrip lines) and non-planar (rectangular waveguide/coaxial cable) interconnects and transitions, high-gain directional microstrip antennas play a vital role in launching energy as a launcher unit instead of multi-stepped microstrip probes [10][11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Gain and Bandwidth Enhancement of Superstrate Loaded 2×2 Circular- Array Antenna for X-Band and RADAR Applications

Varshney

2024

Preprint

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This article demonstrates the fabrication and measurements of a corporate offset-fed 2×2 array electromagnetically coupled patch (EMCP) circular antenna based on the Fabry-Perot cavity principle. A single-element antenna has a low gain of 6.28 dBi; it is enhanced to 13.45 dBi by loading the array with a superstrate. The antenna parameters—10 dB fractional bandwidth (FBW) and gain—are improved by an air gap with four stacked circular patches and four stubs in the proposed design. The peak gain of a 2×2 array without a superstrate was 8.88 dBi at 8.19 GHz, which was enhanced to 13.82 dBi at 9.55 GHz by parasitic loading and a superstrate. The FBW of the proposed array antenna was enhanced by arranging four stubs between the four circles in the superstrate structure. The − 10dB FBW without stubs was 24.82% (7.62–9.73 GHz), and with stubs it became 38.47% (7.73–11.0 GHz). Adjustment of the height of the substrate at 2.0 mm not only improves the gain and bandwidth but also supports enhancing the unidirectional radiation patterns. The array was prototyped and measured to validate the simulated reflection coefficients and radiation characteristics, which found excellent agreement with each other. Therefore, the designed array is most suitable for launchers in transitions, radio wave detection and ranging (RADAR), military, satellite, X-band communications, and microwave laboratory applications.

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Section: Introductionmentioning

confidence: 99%

Gain and Bandwidth Enhancement of Superstrate Loaded 2×2 Circular- Array Antenna for X-Band and RADAR Applications

Varshney

2024

Preprint

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“…There are several methods for enhancing antenna performance and increasing bandwidth, including implementing aperture coupled feeding or other feeding techniques to improve impedance matching and increase bandwidth [35], incorporating frequencyselective surfaces (FSS) or electromagnetic-bandgap (EBG) structures can suppress surface waves and increase antenna bandwidth [36], employing multiple-input multiple-output (MIMO) technology, which uses multiple antennas to increase the system's capacity and enhance performance [37], and adding parasitic elements, such as directors or reflectors, to the antenna structure to increase gain and bandwidth [38]. These methods can be used alone or in combination to achieve the desired performance and bandwidth characteristics for a given application.…”

Section: Introductionmentioning

confidence: 99%

Ultra-Wideband Compact Fractal Antenna for WiMAX, WLAN, C and X Band Applications

Marzouk

Rhazi

Nejdi³

et al. 2023

Sensors

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In this paper, a compact dual-wideband fractal antenna is created for Bluetooth, WiMAX, WLAN, C, and X band applications. The proposed antenna consists of a circularly shaped resonator that contains square slots and a ground plane where a gap line is incorporated to increase the gain and bandwidth with a small volume of 40 × 34 × 1.6 mm3. The patch was supported by the FR4 dielectric, which had a permittivity of 4.4 and tan δ = 0.02. A 50 Ω microstrip line fed this antenna. The antenna was designed by the HFSS program, and after that, the simulated results were validated using the measured results. The measurement results confirm that the suggested antenna achieves dual-band frequencies ranging from 2.30 to 4.10 GHz, and from 6.10 GHz to 10.0 GHz, resonating at 2.8, 3.51, 6.53, and 9.37 GHz, respectively, for various applications including commercial, scholarly, and medical applications. Moreover, the antenna’s ability to operate within the frequency range of 3.1–10.6 GHz is in accordance with the FCC guidelines for the use of UWB antennas in breast cancer detection. Over the operational bands, the gain varied between 2 and 9 dB, and an efficiency of 92% was attained. A good agreement between the simulation and the measured results was found.

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“…In contrast, a conventional microstrip antenna Volume 13, Number 7, 2022 has a single resonance frequency and a limited band width [3]. Several ways have been utilized to extend the microstrip antenna's bandwidth [4][5][6] and enable it to function as a multiband antenna [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Tripleband Single Layer Proximity Fed 2x2 Microstrip Patch Array Antenna

Abraham¹,

Kannadhasan²

2022

Int. j. electr. comput. eng. syst. (Online)

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Microstrip patch antennas that are multiband and downsized are required to suit the high demand of modern wireless applications. To meet this need, a one-of-a-kind triple band array antenna has been proposed. The proposed 2x2 microstrip patch array, which comprises of four hexagon-shaped radiating patches are electromagnetically excited by a centrally positioned microstrip feed line in the same plane along with a slotted ground plane, is investigated. CST Microwave Studio, a powerful 3D electromagnetic analysis programme, was used to design and optimize the array antennas. The 2x2 array antenna was constructed on a FR-4 substrate with a dielectric constant of 4.3, a loss tangent of 0.001, and a height of 1.6mm. To optimize energy coupling from the feed line to the radiating patches, the ground plane has an H-shaped groove cut into it. The suggested 2x2 array antenna's multi- frequency behaviour is shown. Three resonant peaks were detected at 1.891GHz, 2.755GHz, and 3.052GHz. The observed bandwidths for these resonances are 234MHz, 69MHz, and 75MHz, respectively, with measured gains of 7.57dBi, 6.73dBi, and 5.76dBi. The goal of this work is to design, build, and test a single layer proximity fed array antenna. Standard proximity fed array antennas contain two substrate layers; however this array antenna has only one. As a consequence, the impedance matching and alignment are better. Simulated and experimental results showed that the this 2x2 array antenna operates in various important commercial bands, such as L and S bands and the array antenna might be beneficial for a wide range of wireless applications. The proposed antenna has good Impedance, S11, and radiation qualities at resonant frequencies. In this work, the 2x2 array antenna with hexagon-shaped radiating patches was successfully created utilizing the single layer proximity fed antenna concept and gap coupled parasitic patches.

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Performance enhancement of cross dipole circularly polarized antenna using parasitic elements

Cited by 5 publications

References 25 publications

Gain and Bandwidth Enhancement of Superstrate Loaded 2×2 Circular- Array Antenna for X-Band and RADAR Applications

Gain and Bandwidth Enhancement of Superstrate Loaded 2×2 Circular- Array Antenna for X-Band and RADAR Applications

Ultra-Wideband Compact Fractal Antenna for WiMAX, WLAN, C and X Band Applications

Analysis of Tripleband Single Layer Proximity Fed 2x2 Microstrip Patch Array Antenna

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