Modified Compact Antipodal Vivaldi Antenna for 4–50-GHz UWB Application

Bai, Jian; Shi, Shouyuan; Prather, Dennis W.

doi:10.1109/tmtt.2011.2113970

Cited by 209 publications

(104 citation statements)

References 20 publications

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“…To increase the bandwidth, in most antennas, it is necessary to modify its geometry, involving the modification of feeding structures and the use of coupling techniques [62]. An element that meets such requirements as a planar structure, low profile, light weight, and wide-band applications is the Vivaldi antenna [63]. In addition, it is a co-planar structure with moderate directivity, radiation endfire, and radiation patterns symmetrical in the E-H planes, easy to manufacture and economical as shown in Figure 22.…”

Section: Uwb Antennas In Microwave Imaging Systemsmentioning

confidence: 99%

An Overview of Uwb Antennas for Microwave Imaging Systems for Cancer Detection Purposes

Borja¹,

Tirado‐Méndez²,

Jardon-Aguilar³

2018

PIER B

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Abstract-In the last decades, microwave imaging has been a new area of research due to its many advantages over current imaging systems. Microwave imaging system is used for in-depth inspection of biological tissues. The test provides the identification of morphological changes in these biological tissues, as well as their locations. The emerging Ultra-Wideband (UWB) microwave imaging gives better result with the main advantage of using non-ionizing radiation. In these systems, antennas play a very important role, and as such, their optimization has become a very important topic because the device is placed close to the human body. Thus, many aspects are of great importance in the design of the antennas starting from the material with which it is constructed, its dimensions, operation bandwidth, human body influence on the antenna parameters, short-pulse propagation, etc. Recent research has shown several efforts in improving the electromagnetic sensors used in these systems, either as individual or array elements. In this paper, we provide an overview of the most relevant developments in the field of UWB high directivity sensors used in microwave imaging systems.

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Section: Uwb Antennas In Microwave Imaging Systemsmentioning

confidence: 99%

An Overview of Uwb Antennas for Microwave Imaging Systems for Cancer Detection Purposes

Borja¹,

Tirado‐Méndez²,

Jardon-Aguilar³

2018

PIER B

View full text Add to dashboard Cite

show abstract

“…In addition to UWB, MMW technology (30-300 GHz) allows the developing of miniaturized and compact antenna sensors to be used in the RF front end, thus reducing the overall size of the system [16][17][18][19]. Compared to lower frequency signals, MMW signals can propagate over shorter distances due to their larger attenuation.…”

Section: State-of-the-art Antennasmentioning

confidence: 99%

“…[17]. In order to reduce backward radiations, the linear corrugation is designed and optimized by executing several full-wave simulations using the CST Microwave Studio computer program.…”

Section: Broadband Mmw Atsa Designmentioning

confidence: 99%

State-of-the-Art Antenna Technology for Cloud Radio Access Networks (C-RANs)

Sethi¹,

Alfakhri²,

Ashraf³

et al. 2017

Cloud Computing - Architecture and Applications

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The cloud radio access network (C-RAN) is one of the most efficient, low-cost, and energy-efficient radio access techniques proposed as a potential candidate for the implementation of next-generation (NGN) mobile base stations (BSs). A high-performance C-RAN requires an exceptional broadband radio frequency (RF) front end that cannot be guaranteed without remarkable antenna elements. In response, we present state-of-theart antenna elements that are potential candidates for the implementation of the C-RAN's RF front end. We present an overview of C-RAN technology and different types of planar antennas operating at the future proposed fifth-generation (5G) bands that may include the following: (i) ultra-wide band (UWB) (3-12 GHz), (ii) 28/38 GHz, and (iii) 60-GHz radio. Further, we propose different planar antennas suitable for the implementation of C-RAN systems. We design, simulate, and optimize the proposed antennas according to the desired specifications covering the required frequency bands. The key design parameters are calculated, analyzed, and discussed. In our research work, the proposed antennas are lightweight, low-cost, and easy to integrate with other microwave and millimeter-wave (MMW) circuits. We also consider different implementation strategies that can be helpful in the execution of large-scale multiple-input multiple-output (MIMO) networks.

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“…Some printed UWB antennas have gained a lot of recognition due to their advantages of compact structure, small size and ease of integration with other RF circuits. Vivaldi antenna [1][2][3][4][5][6] has been widely studied in UWB antenna research owing to the merits of low profile, wide impedance bandwidth, moderately high gain, good directivity, benign timedomain characteristics, and symmetric beam both in E-plane and H-plane. However, Vivaldi antenna always needs a large size to achieve good performance.…”

Section: Introductionmentioning

confidence: 99%

A Printed Vivaldi Antenna With Improved Radiation Patterns by Using Two Pairs of Eye-Shaped Slots for Uwb Applications

Ma¹,

Zhao²,

Wu³

et al. 2014

PIER

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Abstract-In this paper, a printed Vivaldi antenna with two pairs of eye-shaped slots is proposed for UWB applications. By using two pairs of eye-shaped slots, the side lobe levels of the radiation pattern are reduced, and the antenna gain is improved at low frequencies. To illustrate the effectiveness of the proposed design, a prototype of the proposed antenna is fabricated and measured. Experimental results show that the proposed antenna presents a measured impedance bandwidth, defined by |S 11 | < −10 dB, from 3 to 12.8 GHz with a compact size (36 mm × 36 mm). Good unidirectional radiation characteristics with a front-to-back ratio better than 10 dB are also achieved. The measured gain is better than 3.7 dBi in the operating frequency band. In addition, the measured group delay of the proposed antenna is around 1.2 ns with a variation less than ±0.5 ns.

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Modified Compact Antipodal Vivaldi Antenna for 4–50-GHz UWB Application

Cited by 209 publications

References 20 publications

An Overview of Uwb Antennas for Microwave Imaging Systems for Cancer Detection Purposes

An Overview of Uwb Antennas for Microwave Imaging Systems for Cancer Detection Purposes

State-of-the-Art Antenna Technology for Cloud Radio Access Networks (C-RANs)

A Printed Vivaldi Antenna With Improved Radiation Patterns by Using Two Pairs of Eye-Shaped Slots for Uwb Applications

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