A New Class of Planar Ultrawideband Modular Antenna Arrays With Improved Bandwidth

Logan, John T.; Kindt, Rick W.; Lee, Michael Y.; Vouvakis, Marinos N.

doi:10.1109/tap.2017.2780878

Cited by 172 publications

(53 citation statements)

References 34 publications

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“…This was implemented on capacitively coupled dipoles with dielectric layers above the ground plane for the first time in 2003 [5]. Many TCDA based phased arrays has been designed in recent years mainly for sub-6 GHz [6]- [8], X-band [9]- [11] and Ku-band [11]- [13]. However, very few millimeter wave bands designs are reported, for commercial applications.…”

Section: Introductionmentioning

confidence: 99%

Design and Fabrication of Wideband Dual-Polarized Dipole Array for 5G Wireless Systems

Hussain

Zhou

et al. 2020

IEEE Access

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This paper presents simulation and measurement results of a wideband planar phased array for 5G. The desired wideband operation is achieved using a tightly coupled dipole array (TCDA). The proposed array consists of tightly coupled dipole units in dual-polarized configuration, and two thin parasitic layers separated apart by air gap for wide-angle impedance matching (WAIM). The top matching layer is loaded with a metasurface composed of sub-wavelength split-ring resonators (SRRs) to improve the scanning performance of array. The infinite array achieved a bandwidth from 23.5 to 29.5 GHz, with voltage standing wave ratio (VSWR) < 3 for scan up to ±60 • in E, H and D-plane. The array has a height of only 0.144λ l , and it exhibits high gains, high efficiency > 71% (largest scan angle) and good cross-polarization. The simulations are validated by fabrication and measurement of an array prototype, which indicates agreement to simulated values. The proposed dual-polarized antenna array can be deployed in the future beam scanning applications for 5G.

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Section: Introductionmentioning

confidence: 99%

Design and Fabrication of Wideband Dual-Polarized Dipole Array for 5G Wireless Systems

Hussain

Zhou

et al. 2020

IEEE Access

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“…Among the conventional planar array antenna designs, the element spacing is usually about 0.8λ high [2, 4-8, 10, 12], for avoiding grating lobes, where λ high is the wavelength at the highest operation frequency. It is also well known that tightly coupled array antennas employ smaller element spacing for large beam angle scanning over a UWB, by utilising the mutual coupling between elements in an optimal way to extremely broadening the bandwidth [13][14][15][16][17][18][19]. Vertical dipoles, planar dipoles, and cavitybacked antennas are the most popular elements in the tightly coupled array antennas and exhibit excellent UWB impedance matching characteristics.…”

Section: Introductionmentioning

confidence: 99%

Ultra‐wideband linearly polarised planar bowtie array antenna with feeding network using dielectric‐based inverted microstrip gap waveguide

Zhang

Lei

Moghaddam

et al. 2020

IET Microwaves, Antennas & Propagation

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A tightly coupled bowtie array antenna at a millimetre‐wave band is presented in the study. The antenna has a simple structure and exhibits a high performance over an ultra‐wide bandwidth. The feeding network is designed by using the dielectric‐based inverted microstrip gap waveguide technology in order to have a compact layout. An 8 × 8 planar array is designed and prototyped. The measured results show that the proposed array has achieved an overall bandwidth of 55.7% from 18.7 to 33.15 GHz. The maximum measured gain is 21.8 dBi at 32.5 GHz, and the total antenna efficiency is above 40% through the whole bandwidth.

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“…Since the high impedance of the TCDA aperture (

377

), it is hard to match with the standard 50

coaxial interfaces directly. Researchers have proposed many practical feeding architectures, such as feed organizers [ 22 ], coaxial cable feeds [ 23 ], TCDA with integrated baluns (TCDA-IB) [ 24 , 25 , 26 , 27 , 28 ], Planar Ultrawideband Modular Array (PUMA) feeds [ 29 , 30 , 31 ]. Generally, aiming at the impedance matching, a dielectric superstrate is usually placed over the dipole elements to drop the aperture impedance from 377

down to 200

.…”

Section: Introductionmentioning

confidence: 99%

Ultrawideband, Wide Scanning Stripline-Fed Tightly Coupled Array Antenna Based on Parallel-Dipole Elements

Liang

Yin

Chen

et al. 2020

Sensors

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A stripline-fed tightly coupled array antenna with compact size, large scan volume and low cross-polarization characteristics is proposed for ultrawideband (UWB) applications. Simple impedance-matching process is realized by using parallel dual dipoles. Meanwhile, the parallel symmetrical radiating structures minimize the cross-polarization field components dramatically. The mitigation of various undesired resonances is studied in detail. An infinite array is designed to achieve 3:1 bandwidth (6−18 GHz) when scanning ±60∘ in the E-/D-planes (VSWR < 2.5) and H-plane (VSWR < 3.5). The cross-polarization levels remain below −29 dB at broadside. A 16 × 16 prototype is fabricated to demonstrate the design. The measured results are consistent well with the simulated ones. The overall size of the prototype at the lowest operating frequency is 3×3×0.4λ03 (15×15×2cm3). Due to its wide bandwidth, good electronic scan performance and compact size, the proposed antenna array is a good candidate for modern wireless platforms.

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A New Class of Planar Ultrawideband Modular Antenna Arrays With Improved Bandwidth

Cited by 172 publications

References 34 publications

Design and Fabrication of Wideband Dual-Polarized Dipole Array for 5G Wireless Systems

Design and Fabrication of Wideband Dual-Polarized Dipole Array for 5G Wireless Systems

Ultra‐wideband linearly polarised planar bowtie array antenna with feeding network using dielectric‐based inverted microstrip gap waveguide

Ultrawideband, Wide Scanning Stripline-Fed Tightly Coupled Array Antenna Based on Parallel-Dipole Elements

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