A coplanar vivaldi antenna with integrated filter for Ka-band

Kang, Yang; Loutridis, Abraham; Bao, Xiulong; McEvoy, Patrick; Ammann, Max J.

doi:10.1109/lapc.2016.7807545

Cited by 9 publications

(8 citation statements)

References 7 publications

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“…Cross-polarization in both the principal planes is less than −18 dB indicating strong linearly polarized antenna. Due to unbalanced ground in ACS-feeding, a small side-lobe of value less than The proposed antenna possesses end-fire gain of 6.5-7.5 dBi indicating high gain for the available aperture as compared to reported end-fire antennas [14], [15]. 3D-radiation plots of the proposed antenna are illustrated in Fig.7 at frequencies 28 and 30 GHz thus providing additional insight about the radiation characteristics of proposed ACS-fed mmWave 5G antenna.…”

Section: Compact Acs-fed Antennamentioning

confidence: 86%

Wideband Asymmetric Coplanar Strip Fed Antennas With Pattern Diversity for mmWave 5G Base Stations

et al. 2020

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A compact asymmetric coplanar strip (ACS)-fed mmWave 5G antenna with 6.5-7.5 dBi endfire gain is presented in this paper. The proposed antenna is wideband, operating from 26-32 GHz with fractional bandwidth of 20.7%. The proposed single element antenna has dimensions of 6 × 10 mm 2 demonstrating small physical and electrical footprint. The antenna achieves 1-dB gain bandwidth of 20.7% which demonstrates pattern integrity over whole operating band. The reported antenna also achieves reasonable gain for the available aperture. In order to achieve pattern diversity, a shared ground compact two-port antenna topology is next presented for beam switching at ±30 •. In addition to this, a quasi-stacked beam switching module integrated with low cost 3D-printed scaffolding with wide angular coverage is proposed with adequate technical justification. INDEX TERMS Compact, ACS-fed antenna, mmWave 5G, end-fire, base station, pattern diversity.

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Section: Compact Acs-fed Antennamentioning

confidence: 86%

Wideband Asymmetric Coplanar Strip Fed Antennas With Pattern Diversity for mmWave 5G Base Stations

et al. 2020

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“…However, in all the approaches described above, only the lower frequency of the antipodal Vivaldi antenna is controlled whereas the higher frequency in the operating band is uncontrolled. In the Reference 11, bandpass filter is integrated with a dual‐stub coplanar Vivaldi antenna having a parasitic element to obtain a controlled radiation performance at 28 GHz with a 10 dB impedance bandwidth of 262 MHz. A bandpass filter is employed in the Reference 12 for performance control of the dual‐stub coplanar Vivaldi antenna over 26.11–30.71 GHz.…”

Section: Introductionmentioning

confidence: 99%

“…A bandpass filter is employed in the Reference 12 for performance control of the dual‐stub coplanar Vivaldi antenna over 26.11–30.71 GHz. However, the approaches in the Reference 11,12 are narrowband and suffer from beam tilting in the E‐plane. The challenge lies in obtaining a wide controlled operating band with a constant gain and stable radiation pattern for the antipodal TSA (ATSA) while maintaining a compact size.…”

Section: Introductionmentioning

confidence: 99%

A novel bandpass filter fed antipodal tapered slot antenna for millimeter wave imaging

Saxena

2021

Int J RF Mic Comp-Aid Eng

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In this paper, we propose antipodal tapered slot antenna with integrated bandpass filter over 23.5-40 GHz for high resolution imaging applications. The novel antenna feed comprises of half mode substrate integrated waveguide and rectangular slots with isosceles trapezoidal variation. The feed section gives a passband over 23.5-40 GHz with S 11 j j< À10 dB and S 21 j j'0 dB. We present the design evolution procedure for the integrated filter antenna. The proposed antenna exhibits S 11 j j< À10 dB over the controlled bandwidth from 23.5 GHz to 40 GHz. We incorporate rectangular corrugations in the form of a staircase at the outer edges of the antenna and ground plane slots to achieve a stable gain and stable radiation pattern over the controlled bandwidth. The proposed antenna occupies a volume of 30.3 Â 16 Â 0.254 mm 3 , and is fabricated and tested. The measured results show good agreement with simulations. As compared to the state-of-the-art approaches, the proposed antenna is compact in size and exhibits a constant gain and stable radiation pattern over the operating bandwidth. We describe case studies to illustrate the application of the proposed antenna in a wideband imaging system for the detection of concealed objects and material defects. The reconstructed images obtained with the proposed antenna demonstrate its potential for use in high-resolution millimeter wave imaging systems.antipodal tapered slot antenna, half mode substrate integrated waveguide, integrated filter antenna, millimeter wave imaging | INTRODUCTIONIn recent years, noninvasive imaging has been deployed in various industrial, commercial, medical, and security applications. They include through-wall imaging, biomedical imaging, detection of concealed objects, security scanners, nondestructive testing of materials for fault detection, and detection of landmines and unexploded ordnance. Owing to their nonionizing nature and capability to detect nonmetallic objects, microwave and millimeter wave imaging systems have emerged as good alternatives to the conventional X-ray scanning technology. As less-crowded large bandwidth is available at higher frequencies, imaging systems at these frequencies benefit from their small size and a higher spatial resolution. The latter is crucial to capture the minutest details during imaging. While capturing a high-resolution image, the wide bandwidth signal is directed towards the target with the help of a high gain and wideband antenna. Given a target for imaging, the directivity, gain,

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“…Among various broadband radiating structures such as printed dipoles [2], monopoles [3], bow-ties [4][5][6], patch antennas [7,8], dielectric resonator, and lens antennas [9][10][11], tapered slot antennas (TSAs) exhibit the most favorable performance in terms of bandwidth and radiation pattern characteristics. For example, Vivaldi antennas, a special subclass of TSAs, offer large bandwidth and flat gain over the frequency range; in addition, they present compact and robust system integration properties in a wide range of fields, including wireless communication, microwave imaging, millimeter-wave applications, ground penetrating radar, remote sensing [12], and biomedical screening and diagnosis [13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

A Novel Class of Super-Elliptical Vivaldi Antennas for Ultra-Wideband Applications

Loutridis¹,

Kazici²,

Stukach

et al. 2020

Advanced Radio Frequency Antennas for Modern Communication and Medical Systems

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A novel class of complex-shaped antipodal Vivaldi antennas with enhanced impedance matching characteristics and an equivalent fractional bandwidth (FBW) of 166.8% is proposed. The reported antenna geometry is designed using the superellipse equation and implemented using an inexpensive FR4 laminate having a size of 170.7 mm Â 134 mm Â 0.2 mm. The presented low-cost, easy-to-fabricate radiating structure yields typical total efficiency, realized gain, and front-to-back ratio of 68%, 8.2 dBi, and 21.1 dB, respectively, across the operational frequency range. A parameter study of key geometrical features of the antenna is detailed in order to provide useful design guidelines while getting a better insight into the relevant physical behavior. Finally, a prototype is realized and characterized. The numerical results collected by full-wave simulation of the antenna structure are found to be in good agreement with the experimental measurements taken on the physical demonstrator.

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A coplanar vivaldi antenna with integrated filter for Ka-band

Cited by 9 publications

References 7 publications

Wideband Asymmetric Coplanar Strip Fed Antennas With Pattern Diversity for mmWave 5G Base Stations

Wideband Asymmetric Coplanar Strip Fed Antennas With Pattern Diversity for mmWave 5G Base Stations

A novel bandpass filter fed antipodal tapered slot antenna for millimeter wave imaging

A Novel Class of Super-Elliptical Vivaldi Antennas for Ultra-Wideband Applications

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