Investigation of Frequency Scanning Printed Bruce Array Antenna

Ahmed, Zeeshan; John, Matthias; McEvoy, Patrick; Ammann, Max J.

doi:10.1109/access.2020.3031247

Cited by 7 publications

(10 citation statements)

References 30 publications

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“…The proposed antenna had wider bandwidth and scanning range along with the peak realized gain than [34][35][36][37] and in [35], only the SLL at the broadside is mentioned. There is no mention of SLL threshold for efficient scanning in any articles except [6,27,38,39]. The presented antenna had better scanning range than the first continuous scanning range of [6].…”

Section: Resultsmentioning

confidence: 87%

“…There is no mention of SLL threshold for efficient scanning in any articles except [6,27,38,39]. The presented antenna had better scanning range than the first continuous scanning range of [6]. In [39], although the realized gain and bandwidth are better, it has overall dimensions of 133 × 93 × 21 mm 3 , with a narrower scanning range; it is also difficult to fabricate geometry compared to the presented structure.…”

Section: Resultsmentioning

confidence: 93%

“…The BAA has been around for over a century, but, in spite of its simplicity, modern researchers have overlooked its development and utilization in modern day antenna applications. There are only a handful of ideas proposed to make use of the structure, some of which include Nakano et al's concatenation of the Bruce and Franklin antennas' performance at 12.50 GHz [3], Chen's twin-line fed slot-type BAA planar equivalent [4], a tri-band mm-wave printed counterpart of BAA [5], and an edge-fed printed BAA [6].…”

Section: Introductionmentioning

confidence: 99%

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A Wide Frequency Scanning Printed Bruce Array Antenna with Bowtie and Semi-Circular Elements

Ahmed

McEvoy

Ammann

2020

Sensors

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A printed edge-fed counterpart of the wire Bruce array antenna, for frequency scanning applications, is presented in this paper. The unit-cell of the proposed antenna consists of bowtie and semi-circular elements to achieve wide bandwidth from below 22 GHz to above 38 GHz with open-stopband suppression. The open-stopband suppression enables a wide seamless scanning range from backward, through broadside, to forward endfire. A sidelobe threshold level of −10 dB is maintained to evaluate efficient scanning performance of the antenna. The antenna peak realized gain is 15.30 dBi, and, due to its compact size, has the ability to scan from −64° to 76°.

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Section: Resultsmentioning

confidence: 87%

Section: Resultsmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%

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A Wide Frequency Scanning Printed Bruce Array Antenna with Bowtie and Semi-Circular Elements

Ahmed

McEvoy

Ammann

2020

Sensors

Self Cite

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“…This kind of antenna is known for the open stop band effect that is responsible for suppressing radiation at broadside. This phenomenon can be described from a LWA point of view through the use of the Bloch-Floquet theorem [26,28,29,43,44], but also from a PAA point of view. In the latter, small reflections from the radiating elements and the phase shifters will add in phase at the broadside frequency and create a backward wave, causing a high attenuation [21].…”

Section: Prototype Realization and Measurementsmentioning

confidence: 99%

“…This solution, even if accurate, is computationally expensive. In the cited references, rampart line antennas are designed using hardware or software experiments [20,22], applying phased array antenna (PAA) theory [18,19,21,22,25], or applying leaky-wave antenna (LWA) theory [26,28,29]. Both theoretical approaches are valid.…”

Section: Introductionmentioning

confidence: 99%

Analysis and modelling of rampart line antennas

Sacco

Caytan

Pisa

et al. 2021

IET Microwaves Antenna & Prop

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A new, efficient, and accurate analytical model is introduced for estimating the beam direction of rampart line antennas with microstrip radiators that can change beam direction with feeding frequency. The model takes its origins from 1-D array theory, in which the bends represent the radiating elements, and the interconnecting lines represent the phase shifters. A mathematical expression accounting for the equivalent length of the bends for the correct estimation of the distance between the radiators is introduced. The model was tested for various substrate relative permittivity values ranging from 2.9 to 6.45. This model can be used for arbitrary rampart line configurations by providing the equivalent dipole direction, depending on the orientation of the bends. An alternative geometry was proposed to reduce the coupling between the parallel line segments. A prototype operating in a bandwidth of 1 GHz around 7.8 GHz was realized on a Rogers RO4350B high-frequency laminate with a thickness of 1.524 mm. Both the radiation pattern and the reflection coefficient were measured and show a good agreement with the proposed analytical model and commercial full-wave simulation tool results.This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

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A periodic meandering microstrip line leaky‐wave antenna with consistent gain and wide‐angle beam scanning

Wang

Sun

Xue

2022

Int J RF Mic Comp-Aid Eng

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In this article, a periodic leaky‐wave antenna (LWA) with wide‐angle beam scanning and stable gain is proposed based on the meandering microstrip line. Due to the meandering property of the microstrip line, the longitudinal dimension of the antenna is reduced. Firstly, the radiation characteristic of the meandering microstrip line is analyzed in detail. Each corner of the meandering microstrip line is modeled by a shunt capacitance and shunt radiation conductance to acquire the equivalent circuit. Then, the frequency balanced condition is investigated based on the established equivalent circuit to realize continuous beam scanning through broadside. Subsequently, the method of open‐stop band (OSB) suppression is studied by introducing asymmetric perturbation on the LWA unit cell, which actually can be applied to eliminate the OSB effect in arbitrary symmetric LWAs. Finally, an antenna prototype is simulated and measured. The measured results agree well with the simulated results, validating the proposed method of OSB suppression. The measured results show that the designed antenna exhibits the beam scanning capacity of −47° to +76° with the frequency varying from 5.0 to 7.8 GHz and gain variation of 2.9 dB.

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Investigation of Frequency Scanning Printed Bruce Array Antenna

Cited by 7 publications

References 30 publications

A Wide Frequency Scanning Printed Bruce Array Antenna with Bowtie and Semi-Circular Elements

A Wide Frequency Scanning Printed Bruce Array Antenna with Bowtie and Semi-Circular Elements

Analysis and modelling of rampart line antennas

A periodic meandering microstrip line leaky‐wave antenna with consistent gain and wide‐angle beam scanning

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