A Ferrite-Loaded Ultralow Profile Ultrawideband Tightly Coupled Dipole Array

Wang, Bingjun; Yang, Shiwen; Zhang, Zhechen; Chen, Yikai; Qu, Shi‐Wei; Hu, Jun

doi:10.1109/tap.2021.3118798

Cited by 39 publications

(10 citation statements)

References 34 publications

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“…The substrate and superstrate are perforated with air holes in four corners, so as to further reduce their effective permittivity and then to avoid the scan blindness caused by surface wave. 15 The dipole printed on the top of the substrate can provide an interdigital capacitance, which can improve the impedance matching at low frequency. To improve the coupling in H-plane during the scanning process, two parasitic strips are placed on two sides of the dipole.…”

Section: Antenna Design and Analysis 21 | Operating Principle Of The ...mentioning

confidence: 99%

“…For mitigating the surface wave, the low permittivity PTFE materials Rogers 5880 (

ε_{r} = 2.2

\tan δ = 0.0009

) are chosen as the substrate and superstrate. The substrate and superstrate are perforated with air holes in four corners, so as to further reduce their effective permittivity and then to avoid the scan blindness caused by surface wave 15 . The dipole printed on the top of the substrate can provide an interdigital capacitance, which can improve the impedance matching at low frequency.…”

Section: Antenna Design and Analysismentioning

confidence: 99%

“…By using the coupling capacitance between adjacent elements to counteract the inductance introduced by the ground plane, TCDAs can achieve ultra‐wideband, especially at low frequency 11 . Since then, a large number of TCDAs have been proposed, which can achieve a bandwidth of 3:1, 12 7.35:1, 13 6:1, 14 10:1 15 at a low profile of 0.14

λ_{italiclow}

, 0.1

λ_{italiclow}

, 0.08

λ_{italiclow}

and 0.042

λ_{italiclow}

(

λ_{italiclow}

is the free space wavelength at the lowest frequency), respectively. Moreover, the TCDAs can also realize wide‐angle scanning of ±45°, 16 ±60°, 17 ±70° 18 and ±75° 19 by using different types of wide angle impedance matching (WAIM) layer.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A linear tightly coupled dipole array with wide‐angle scanning

Jia

Liu

et al. 2022

Int J RF Mic Comp-Aid Eng

View full text Add to dashboard Cite

Section: Antenna Design and Analysis 21 | Operating Principle Of The ...mentioning

confidence: 99%

“…For mitigating the surface wave, the low permittivity PTFE materials Rogers 5880 (

ε_{r} = 2.2

\tan δ = 0.0009

Section: Antenna Design and Analysismentioning

confidence: 99%

λ_{italiclow}

, 0.1

λ_{italiclow}

, 0.08

λ_{italiclow}

and 0.042

λ_{italiclow}

(

λ_{italiclow}

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A linear tightly coupled dipole array with wide‐angle scanning

Jia

Liu

et al. 2022

Int J RF Mic Comp-Aid Eng

View full text Add to dashboard Cite

“…In ref. [6], the well‐designed ferrite loading was positioned above the ground plane to reduce the ground plane's effect. Consequently, the array's impedance bandwidth (0.2–2 GHz) and wide‐angle scanning capability (60° in the E− and H‐planes) obtained tremendous performance.…”

Section: Introductionmentioning

confidence: 99%

A low‐profile wide‐angle scanning ultrawideband tightly coupled dipole array without any wide‐angle impedance matching layer

Geng

Zhao

2023

IET Microwaves Antenna & Prop

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The present is a low-profile, wide-angle scanning, ultrawideband, tightly coupled dipole array that lacks a wide-angle impedance matching layer and lossy materials. Impedance matching will deteriorate at the lower end of the operating bandwidth due to the influence of the ground plane. A well-designed perforated balun is used to achieve better impedance matching. Moreover, parasitic metallic strips are attached to the dipole's side to add additional reactive components. According to the results of simulations, the impedance bandwidth of the array, which ranges from 0.67 to 2.83 GHz, and its wide-angle scanning capability, which scans 75°in the E-plane and 45°in the H-plane, both achieve good performance when the voltage standing wave ratio is less than 3. The profile of the array is only 0.0581λ low above the ground plane, where λ low is the wavelength at the lowest operating frequency. The proposed array's simulated results are validated by fabricating and measuring an 8 � 8 prototype array.

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“…In order to improve the scanning bandwidth of TCDA antennas, one important aspect is to suppress the in-band common mode resonance; for example, by using a TCDA antenna with integrated balun [12], or planar ultrawideband modular antennas based on shorted via [13] or capacitively loaded via [14]. However, most reported TCDA antennas worked with linear polarization or dual linear polarization (DP) [12][13][14][15][16][17], and few papers deal with CP-TCDA antenna. A 4 × 4 CP tightly coupled crossed dipole array antenna was designed in [18].…”

Section: Introductionmentioning

confidence: 99%

A Wideband Scanning Circularly Polarized Array Antenna Based on the Shorted Transmission Line Model

et al. 2022

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Due to the huge potential of application in the communications, electronic jamming, and radar fields, circularly polarized (CP) array antennas with wide axial ratio (AR) scanning performance at wide frequency bandwidth have received great attention. A wideband scanning CP planar array antenna built by new, tightly coupled dipole array (CP-TCDA) elements, which have achieved promising results in terms of both scanning AR bandwidth and angle range in all scanning planes, is presented in this paper. Based on the shorted transmission line model, a CP-TCDA element arranged along the ±45° direction is constructed, which can shift the middle-frequency scanning blind zone out of band and thus obtain a wideband scanning AR bandwidth. Furthermore, the proposed CP-TCDA element adopts four shorting pins and four square parasitic strips, which improve wide-angle CP performance for xz-plane and diagonal-plane scans, respectively. An 8×8 left-handed CP planar array antenna based on the proposed CP-TCDA elements is designed and prototyped. The results show that the array antenna is able to operate over a 3:1 (4-12 GHz) overlapping bandwidth, and it meets the requirements of AR < 3 dB and active VSWR < 2.9 within a ±45° scanning angle range.INDEX TERMS array antenna, circularly polarized, phased antenna, scanning antennas

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A Ferrite-Loaded Ultralow Profile Ultrawideband Tightly Coupled Dipole Array

Cited by 39 publications

References 34 publications

A linear tightly coupled dipole array with wide‐angle scanning

A linear tightly coupled dipole array with wide‐angle scanning

A low‐profile wide‐angle scanning ultrawideband tightly coupled dipole array without any wide‐angle impedance matching layer

A Wideband Scanning Circularly Polarized Array Antenna Based on the Shorted Transmission Line Model

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