A Broadband Wrapped Bowtie Antenna for UWB Pulsed Radar Applications

Lee, Doojin; Shaker, George; Melek, William

doi:10.1109/tap.2020.3000556

Cited by 11 publications

(4 citation statements)

References 27 publications

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“…The substrate (Rogers RT / duroid 5870) with 0.79 mm thickness is used with the dielectric constant of 2.33 and the loss tangent of 0.0005. The printed planar dipole antenna in this study is fed by the microstrip-to-balanced transmission-line transition, which not only transforms the impedance from 50 Ω to 188 Ω but also makes the end of the line balanced [44], [45], [46]. The balanced transmission line consists of the microstrip and parallel lines.…”

Section: Single Printed Planar Dipole Antennamentioning

confidence: 99%

“…The width of each transmission line can be easily determined by using a microstrip line equation, which can be found in [47]. The parallel strip-lines, which have the same widths with respect to the signal and ground lines, can be designed by implementing an image theory to the original equation of the microstrip line [44], [45], [46]. The antenna parameters, as shown in Fig.…”

Section: Single Printed Planar Dipole Antennamentioning

confidence: 99%

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Metasurface Cloaks to Decouple Closely Spaced Printed Dipole Antenna Arrays Fed by a Microstrip-to-Balanced Transmission-Line Transition

Lee

Yakovlev

2021

IEEE Access

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In this work, we present a numerical study of 1D and 2D closely spaced antenna arrays of microstrip dipole antennas covered by a metasurface in order to properly cloak and decouple the antenna arrays operating at neighboring frequencies. We show that the two strongly coupled arrays fed by a microstrip-to-balanced transmission-line transition are effectively decoupled in 1D and 2D array scenarios by covering the dipole antenna elements with an elliptically shaped metasurface, which comprises subwavelength periodic metallic strips printed on an elliptically shaped dielectric cover around the dipole antennas and integrated with the substrate. We present a practical design of cloaked printed dipole arrays placed in close proximity of each other and demonstrate that the arrays are decoupled in the near field and operate independently in the far field with their original radiation characteristics as if they were isolated.INDEX TERMS Antenna arrays, beam steering, elliptical metasurface, mantle cloaks, microstrip-tobalanced transmission-line transition, mutual coupling, phased arrays.

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Section: Single Printed Planar Dipole Antennamentioning

confidence: 99%

Section: Single Printed Planar Dipole Antennamentioning

confidence: 99%

Metasurface Cloaks to Decouple Closely Spaced Printed Dipole Antenna Arrays Fed by a Microstrip-to-Balanced Transmission-Line Transition

Lee

Yakovlev

2021

IEEE Access

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“…Pentagon-shaped planar monopole antenna with a pyramid-shaped reflector [6]. The circular monopole antenna, which adds a split ring resonator (SRR) [7], [8] and a biconical antenna [9] Wrapped bowtie [10], array structure [11], adding frequency selective surface [12], metamaterial loaded [13], and Magneto Electric Monopole (MEM) [14]. Previous studies produce antennas with UWB characteristics, but the antenna becomes thicker due to dielectrics, pyramid reflectors, SRR, Array Structure, FSS, metamaterial loaded MEM, and biconical forms.…”

Section: Introductionmentioning

confidence: 99%

The Small UWB Monopole Antenna with Stable Omnidirectional Radiation Pattern

Firdaus

Yuhanef²,

Yulindon³

et al. 2022

JOIV : Int. J. Inform. Visualization

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Ultra Wideband (UWB) technology is an unmodulated wireless digital communication system that uses an extremely short duration pulse to transmit information bit. Because of this pulse, the UWB system needs a very wide bandwidth. Federal Communication Commission (FCC) has regulated the 3.1 – 10.6 GHz frequency spectrum for UWB. Since FCC released this frequency, many research in telecommunication have been done on UWB systems. One of them is a development of an Antenna that is suitable for UWB devices. UWB antenna characteristics require FCC band, omnidirectional radiation pattern, and compact size. In order to meet these needs, an antenna with a simple structure in the form of a monopole patch antenna with a similar patch size and ground width has been designed. The antenna is built on an FR4 – epoxy substrate material, with 4.4 dielectric constant and 1.6 mm thickness. The antenna feeding structure consists of two 100 Ω and 50 Ω lines with a wideband impedance matching scheme using tapered side and tapered transformers. The antenna design and optimization processes are conducted using electromagnetic simulation software, and measurements are carried out in an anechoic chamber. Simulation and measurement results show good agreement, and the antenna can work at frequencies 3.5 - 11.3 GHz with a gain of 1.5 – 3.25 dBi and stable omnidirectional radiation patterns. The antenna has dimensions of 27 × 8 × 1.6 mm, which are smaller than the antenna reported in the last research and suitable to be applied on various UWB devices.

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“…In addition to the telecommunications, UWB antennas are widely used for a variety of civil, space, biomedical, and military applications [ 3 , 4 , 5 , 6 , 7 ]. They can include UWB pulse radars to detect buried mines or to rescue buried people, as well as the generation of electromagnetic pulse for electromagnetic compatibility and vulnerability tests on electronic and IT equipment [ 8 ].…”

Section: Introductionmentioning

confidence: 99%

Sinuous Antenna for UWB Radar Applications

Mescia

Mevoli

Lamacchia³

et al. 2021

Sensors

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In this paper, the recent progress on sinuous antennas is detailed, focusing the attention on the antenna geometry, dielectric structure, and miniaturization techniques. In the first part, we introduce the basic principles of the frequency-independent antenna, in particular the self-complementary and log-periodic geometries, as well as the antenna geometries, all characterized in terms of angles. The operating principles, main advantages, system design considerations, limits, and challenges of conventional sinuous antennas are illustrated. Second, we describe some technical solutions aimed to ensure the optimal trade-off between antenna size and radiation behavior. To this aim, some special modification of the antenna geometry based on the meandering as well as on the loading with dielectric structures are presented. Moreover, the cavity backing technique is explained in detail as a method to achieve unidirectional radiation. Third, we present a new class of supershaped sinuous antenna based on a suitable merge of the 2D superformula and the sinuous curve. The effect of the free parameters change on the antenna arm geometry as well as the performance improvement in terms of directivity, beam stability, beam angle, gain, and radiating efficiency are highlighted.

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A Broadband Wrapped Bowtie Antenna for UWB Pulsed Radar Applications

Cited by 11 publications

References 27 publications

Metasurface Cloaks to Decouple Closely Spaced Printed Dipole Antenna Arrays Fed by a Microstrip-to-Balanced Transmission-Line Transition

Metasurface Cloaks to Decouple Closely Spaced Printed Dipole Antenna Arrays Fed by a Microstrip-to-Balanced Transmission-Line Transition

The Small UWB Monopole Antenna with Stable Omnidirectional Radiation Pattern

Sinuous Antenna for UWB Radar Applications

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