Wideband planar array antenna based on SCRLH-TL for airborne synthetic aperture radar application

Alibakhshikenari, Mohammad; Virdee, Bal S.; Limiti, Ernesto

doi:10.1080/09205071.2018.1460280

Cited by 51 publications

(36 citation statements)

References 28 publications

(26 reference statements)

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“…In this respect, the emerging notion of metamaterial with different resonator unit shapes has played a great role in reducing the complexity incurred due to the addition of extra structures and improving performance of antennas . In this section, the bandwidth enhancement techniques will be presented by categorizing them based on the placement of metamaterial structure on/near the patch, loaded/etched in the ground plane, embedded in the substrate, and as superstrate …”

Section: Applications Of Metamaterials In Antenna Engineeringmentioning

confidence: 99%

“…Figure shows the fabricated antenna and the parametric studies made on the number of CRLH unit cells to widen the bandwidth from 3.25 to 7.05 GHz. In Reference, a 6 × 6 array of spiral slot right‐/left‐handed transmission line unit cell etched antenna for circularly polarized synthetic aperture radar system operated in UHF, L‐, S‐, and C‐bands has been presented. A bandwidth enhancement from 25% (single CRLH unit) to 173% (0.3‐4.15 GHz, array CRLH units) has been achieved by changing the single spiral slot to an array of 6 × 6 spirals.…”

Section: Applications Of Metamaterials In Antenna Engineeringmentioning

confidence: 99%

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Application of metamaterials for performance enhancement of planar antennas: A review

Tadesse

Acharya

Sahu

2020

Int J RF Microw Comput Aided Eng

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Metamaterials are assemblies of metallic and/or dielectric materials with properties that are not readily found in naturally existing materials. Hence, metamaterial structures are commonly loaded on/near the patch, embedded in the substrate, loaded/etched from the ground plane or placed as a superstrate layer for enhancing bandwidth and gain, and size miniaturization of conventional patch antennas. The demand for wide bandwidth, high gain, and compact antennas is highly contemplated in recent wireless communication research studies. Despite their lightweight, ease of fabrication, low profile, and simplicity for integration, patch antennas have performance limitations as result of their narrow bandwidth, lower gain, larger size, and lower power handling capacity. To address these problems, metamaterial‐based antennas have gained massive interest. There exist inadequate literatures about review of current state of extensive study reports on metamaterial application for patch antenna performance enhancement. Thus, this paper has reviewed and discussed latest research works on metamaterial applications for performance enhancement of planar patch antennas.

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Section: Applications Of Metamaterials In Antenna Engineeringmentioning

confidence: 99%

Section: Applications Of Metamaterials In Antenna Engineeringmentioning

confidence: 99%

Application of metamaterials for performance enhancement of planar antennas: A review

Tadesse

Acharya

Sahu

2020

Int J RF Microw Comput Aided Eng

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“…However, multiple fed antennas provide, in general, broader bandwidths than single fed antennas . Recently, there are some single fed CP antenna designs to achieve broadband CP operation, such as monopole antennas, coplanar‐waveguide (CPW) feed antennas, metamaterial antennas, wide slot antennas, and crossed dipole antennas …”

Section: Introductionmentioning

confidence: 99%

“…By utilizing the asymmetrical CPW feed, an inverted rectangular bracket‐shape parasitic strip, and a protruded stub from the ground plane, a broadband CP radiation with bandwidth of 49% is generated in Reference . Metamaterial is a new approach to design antennas with miniaturization and wide impedance bandwidth. In References 6 and 9, by using composite right‐/left‐handed(CRLH) metamaterial technique.…”

Section: Introductionmentioning

confidence: 99%

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A small single fed broadband circularly polarized slot antenna

Huang

Zhang

2020

Int J RF Microw Comput Aided Eng

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In this research, we present a simple single fed small broadband circularly polarized (CP) antenna. The proposed structure has the advantage of simultaneously obtaining broadband ARBW and IMBW in a small size (0.64λ × 0.62λ × 0.01λ), where λ is the free‐space wavelength at the center frequency. The measured S11 BW is 100% (2.15‐6.44 GHz), which is completely overlapped by the measured ARBW of 108.7% (2.09‐7.07 GHz), which are wider than most published papers. The antenna consists of an off‐center microstrip feed line, an inverted rectangular bracket‐shape (IRBS) parasitic strip, and a modified ground plane. The modified ground plane has three linked slots and a protruded L‐shaped stub (LSS). The IRBS parasitic strip and the feed line are on one side of the substrate, whereas the ground plane is on the other side. The IRBS and LSS are overlaid up and down. The novelties of the structure are that the design mechanics is simple and clear as follows: (a) The three linked slots make the ground asymmetrical, and the asymmetrical ground makes the broadband IMBW in a small size preliminarily formed. Though the AR is around 8 dB, the fluctuation of AR inside the operation frequency band is little. (b) The off‐center feeding line, IRBS parasitic strip, and the LSS chain together through capacitance coupling, and the current path is formed, then the AR below 3 dB in the whole frequency band is generated. The peak gain and radiation efficiency are of 5.5 dBi and 95%, respectively. The proposed antenna is a good candidate for the application of various wireless communication systems, such as WLAN, WiMAX, and RFID.

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A metasurface‐based wideband bidirectional same‐sense circularly polarized antenna

Hussain

Naqvi

Awan

et al. 2020

Int J RF Microw Comput Aided Eng

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Wideband planar array antenna based on SCRLH-TL for airborne synthetic aperture radar application

Cited by 51 publications

References 28 publications

Application of metamaterials for performance enhancement of planar antennas: A review

Application of metamaterials for performance enhancement of planar antennas: A review

A small single fed broadband circularly polarized slot antenna

A metasurface‐based wideband bidirectional same‐sense circularly polarized antenna

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