Study and Design of a Differentially-Fed Tapered Slot Antenna Array

Acedo, Eloy de Lera; García, E.; González-Posadas, V.; Vazquez-Roy, Jose Luis; Maaskant, Rob; Segovia, D.

doi:10.1109/tap.2009.2036193

Cited by 53 publications

(35 citation statements)

References 21 publications

(32 reference statements)

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“…An analysis of the effects of these resonances on the efficiency of a connected array was presented in [13]. The same type of resonances were also observed and investigated for arrays of differentially-fed tapered slot antennas in [14]. When the array periodicity is in the order of half wavelength, standard baluns or common-mode rejection circuits are not effective as will be shown in the following.…”

Section: Introductionmentioning

confidence: 88%

PCB Slot Based Transformers to Avoid Common-Mode Resonances in Connected Arrays of Dipoles

Cavallo

Neto

Gerini

2010

IEEE Trans. Antennas Propagat.

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Section: Introductionmentioning

confidence: 88%

PCB Slot Based Transformers to Avoid Common-Mode Resonances in Connected Arrays of Dipoles

Cavallo

Neto

Gerini

2010

IEEE Trans. Antennas Propagat.

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“…current sheet) radiators placed above a ground plane, many of which are covered by superstrate dielectrics. Vertically-integrated arrays include but are not limited to the Bunny-ear [67,74], connected-dipole arrays [20], balanced antipodal Vivaldi antennas (BAVA) [75][76][77], and printed dipoles with integrated baluns [22,78,79].…”

Section: Vertically-integrated Uwb Arraysmentioning

confidence: 99%

“…1.16(a) is able to achieve bandwidths of 5:1 while requiring external baluns/hybrid feeding scehemes in addition to adjacent element electrical connection [67]. Alternatively, film resistors are connected between the Bunny ear elements and the ground plane to dissipate problematic resonances while being fed through external baluns/hybrids in [74], resulting in reduced efficiency and power handling; a dielectric-free aluminum-based implementation of this array in Fig. 1.16(b) was demonstrated recently with similar performance to meet demand needs for the Square Kilometre Array [80].…”

Section: Vertically-integrated Uwb Arraysmentioning

confidence: 99%

Low Cross-Polarization Vivaldi Arrays

Logan

Kindt

Vouvakis

2018

IEEE Trans. Antennas Propagat.

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ACKNOWLEDGMENTSI would like to begin by extending my gratitude for having the opportunity and privilege to study under the guidance of my advisor, Prof. Marinos Vouvakis, over the course of five years for my Master's and PhD research. His energy, drive, and motivation to not only teach but also to stimulate critical thinking, to invoke a practical mindset, and to create with meaning have left me with invaluable principles. I am indebted to him for challenging me and his endless patience and support throughout this research.I'd like to also thank Prof. Do-Hoon Kwon and Prof. Gopal Narayanan for serving on my dissertation committee and providing many insightful comments and support.I would like to additionally extend my gratitude to Prof. Robert Jackson, Prof.Paul Siqueira, and Prof. Joseph Bardin for serving on my research qualifying exam committee. Also, although I never had the pleasure of having him as a professor at UMass, I'd like to thank Prof. Dan Schaubert for taking the time to inadvertently introduce Vivaldi arrays to a curious kid at a phased array conference nearly six years ago; likewise thanks to Prof. Jorge Salazar for seeing some potential in that kid to encourage him to apply for graduate study at UMass. I appreciate it greatly. Ultra-wideband (UWB) electronically scanned arrays (ESA) with high efficiency, excellent polarization agility, and wide-scan matching remain essential for servicing multifunctional RF front-ends and other communications, sensing, and jamming or countermeasure systems. To this day, the most popular antenna array element in modern UWB-ESA systems is the Vivaldi, or flared notch, due to its superior widescan wide impedance bandwidth, well-known design guidelines, and practical embodiment versatility. Despite their popularity, these arrays tend to radiate unacceptably high cross-polarization levels, thus encouraging a great research opportunity.This dissertation presents the theory and design of a new class of UWB-ESAs, termed Sliced Notch Antenna (SNA) arrays, that remedy the high cross-polarization problems in Vivaldi arrays while maintaining their desirable impedance performance.The critical enabling insight of this work lays in revealing the nature of polarization viii purity or cross-polarization ratio (CPR) degradation in Vivaldi arrays to arise from a highly imbalanced ratio of longitudinal and transverse currents within the element.This work introduces a novel design strategy that intrinsically balances these currents over a UWB operating band, achieving decade-order (10:1) bandwidths and low cross-polarization. Moreover, the design approach is simple, intuitive, and can be implemented in a manner that does not inflate cost expenditures. In fact, the proposed topology can facilitate significantly reduced costs and manufacturing times

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“…Polarization diversity is typically used with dual polarized antenna elements with high isolation between the polarizations [7][8][9][10][11][12][13][14][15]. Complete antenna arrays can be found in [16][17][18][19]. State-ofthe-art comparison of currently studied antenna radiators is collected in Table 1, where the studied antenna structure can be found in column one.…”

Section: Introductionmentioning

confidence: 99%

Dual Polarized Dual Fed Vivaldi Antenna for Cellular Base Station Operating at 1.7–2.7 GHz

Sonkki

Myllymäki

Putaala

et al. 2017

International Journal of Antennas and Propagation

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The paper presents a novel dual polarized dual fed Vivaldi antenna structure for 1.7-2.7 GHz cellular bands. The radiating element is designed for a base station antenna array with high antenna performance criteria. One radiating element contains two parallel dual fed Vivaldi antennas for one polarization with 65 mm separation. Both Vivaldi antennas for one polarization are excited symmetrically. This means that the amplitudes for both antennas are equal, and the phase difference is zero. The orthogonal polarization is implemented in the same way. The dual polarized dual fed Vivaldi is positioned 15 mm ahead from the reflector to improve directivity. The antenna is designed for −14 dB impedance bandwidth (1.7-2.7 GHz) with better than 25 dB isolation between the antenna ports. The measured total efficiency is better than −0.625 dB (87%) and the antenna presents a flat, approximately 8.5 dB, gain in the direction of boresight over the operating bandwidth whose characteristics promote it among the best antennas in the field. Additionally, the measured cross polarization discrimination (XPD) is between 15 and 30 dB and the 3 dB beamwidth varies between 68 ∘ and 75 ∘ depending on the studied frequency.

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Study and Design of a Differentially-Fed Tapered Slot Antenna Array

Cited by 53 publications

References 21 publications

PCB Slot Based Transformers to Avoid Common-Mode Resonances in Connected Arrays of Dipoles

PCB Slot Based Transformers to Avoid Common-Mode Resonances in Connected Arrays of Dipoles

Low Cross-Polarization Vivaldi Arrays

Dual Polarized Dual Fed Vivaldi Antenna for Cellular Base Station Operating at 1.7–2.7 GHz

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