Connected-Slot Array With Artificial Dielectrics: A 6 to 15 GHz Dual-Pol Wide-Scan Prototype

Cavallo, Daniele; Syed, Waqas H.; Neto, A.

doi:10.1109/tap.2018.2811841

Cited by 88 publications

(43 citation statements)

References 25 publications

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“…1) and H-plane at broadside Note that the coaxial transition allows 2D scanning (refer to Section III) and does not require a corporate feed network or quasi-optical system, as in [5]. It is worth mentioning that connected arrays can provide a similar performance [11]- [13].…”

Section: Antenna Designmentioning

confidence: 99%

An $8\times 4$ Continuous Transverse Stub Array Fed by Coaxial Ports

Zhou

Ettorre

Grbic

2019

Antennas Wirel. Propag. Lett.

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Continuous transverse stub arrays are wide band, wide scanning antennas consisting of an arrangement of long slots or parallel plate waveguide apertures radiating in free space. A line source is generally required to feed these arrays. Here, we show that such a line source can be created over the radiating aperture using a 2D arrangement of coaxial probe transitions. The coaxial transitions are directly integrated into the parallel plate waveguides feeding the slots. Such a solution avoids using quasi-optical systems or bulky corporate networks to feed the array. The proposed 2D feeding scheme also allows steering the main beam of the array. This is an additional benefit with respect to previous designs for which scanning was limited to a single plane. An array of 8×4 elements validates the concept at 5.8 GHz. Measurements show that the array exhibits a field of view of ±30 • in elevation over the 5.4 − 6.2 GHz band, with an active reflection coefficient for the central elements better than −10 dB.

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Section: Antenna Designmentioning

confidence: 99%

An $8\times 4$ Continuous Transverse Stub Array Fed by Coaxial Ports

Zhou

Ettorre

Grbic

2019

Antennas Wirel. Propag. Lett.

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“…A planar wideband array concept with reduced cost and complexity was presented in [13], [14] and consists of connected slot arrays with artificial dielectric layers (ADLs). These are antenna arrays composed of slots that are electrically connected to each other, intentionally increasing mutual coupling to provide wideband operation.…”

Section: Introductionmentioning

confidence: 99%

Design of Wideband Wide-Scanning Dual-Polarized Phased Array Covering Simultaneously Both the Ku- and the Ka-Satcom Bands

Katwijk

Neto

Toso

et al. 2020

2020 14th European Conference on Antennas and Propagation (EuCAP)

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We present the unit cell design of a wideband widescanning phased array operating in both Ku-and Ka-bands, for satellite communication applications. The radiating elements are dual-polarized connected slots loaded with an artificial dielectric superstrate, acting as a wide angle impedance matching (WAIM) structure. The design of the multi-layer artificial dielectric is based on analytical formulas describing the equivalent reactance of each layer, valid for geometries that are not periodic in the vertical direction. This allows to minimize the total number of metal layers composing the artificial dielectric. The predicted matching performance is investigated by means of simulations based on infinite array approximation.

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“…In arrays, this connected element approach is considered as a suitable solution for wide-band, wide-scan applications [5]. This concept has been used for the dipole [5], Vivaldi [6] and slot [7] antenna elements. In this paper, the concept of connected array is implemented with a dual polarized bowtie element to achieve a relatively low profile (∼ 0.35 λ max ), wide scan (±75 • at E-plane and ±15 • at H-plane) antenna array.…”

Section: Introductionmentioning

confidence: 99%

A Wide Coverage S-Band Array with Dual Polarized Connected Bowtie Antenna Elements

Khanal

Yang

Ivashina

et al. 2019

2019 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting

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A low profile dual polarized bowtie antenna element is studied for an S-band (3 GHz) wide-scan application in a large-scale (nearly an infinitely large) uniformly excited phased array. The study shows that the array with such elements, when connected, is capable of scanning up to ±75 • at E-plane and ±15 • at H-plane for horizontal and vertical polarizations respectively. The bandwidth of the infinite array with such elements across these scan angles is 10% and 25% for the active reflection coefficient of −10 dB and −5 dB respectively.

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Connected-Slot Array With Artificial Dielectrics: A 6 to 15 GHz Dual-Pol Wide-Scan Prototype

Cited by 88 publications

References 25 publications

An $8\times 4$ Continuous Transverse Stub Array Fed by Coaxial Ports

An $8\times 4$ Continuous Transverse Stub Array Fed by Coaxial Ports

Design of Wideband Wide-Scanning Dual-Polarized Phased Array Covering Simultaneously Both the Ku- and the Ka-Satcom Bands

A Wide Coverage S-Band Array with Dual Polarized Connected Bowtie Antenna Elements

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