New design of the antipodal Vivaldi antenna for a GPR system

Fang, Guangyou

doi:10.1002/mop.20568

Cited by 15 publications

(4 citation statements)

References 4 publications

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“…9(a), is the most popular one among all kinds of UWB antennas [19]- [21]. Comparing with the monopole antenna, the presented antenna has a symmetrical structure and feed mechanism without the limitations of the large ground plane and asymmetrical radiation pattern.…”

Section: Design Of Antennamentioning

confidence: 98%

Development of a Novel, Compact, Balanced, Micropower Impulse Radar for Nondestructive Applications

Liu

Xia

et al. 2015

IEEE Sensors J.

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In this paper, we present a novel development of compact micropower ultrawideband (UWB) radar by integrating ultrashort balanced transmitter, sampling receiver, and antennas into a single package. The developed transmitter produces a pair of Gaussian pulses with 1 MHz of PRF, 400 ps of duration, and 8.3 V for peak-to-peak amplitude. The receiver down-converts microwave signals with a conversion gain of 3 dB over a 4.5-GHz bandwidth. The integrated UWB micropower radar system allows for the short-range detection with high range resolution and accuracy, thus enhance effectively the capability of target detection and classification. The high performances of such radar system for detecting objects are demonstrated through the realfield tests of various target scenes.Index Terms-Micropower impulse radar (MIR), UWB transmitter/receiver, UWB antenna, pulse generation, sample and hold circuit, nondestructive test.

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Section: Design Of Antennamentioning

confidence: 98%

Development of a Novel, Compact, Balanced, Micropower Impulse Radar for Nondestructive Applications

Liu

Xia

et al. 2015

IEEE Sensors J.

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“…The various feeding methods are microstrip line, electromagnetically coupled feed, and aperture coupled feed. The parallel microstrip feed line provides a good impedance match and hence improves return loss as compared to the exponential curve microstrip line [43]. As compared to a single antenna, multiple antennas give much better performance.…”

Section: Performance Enhancement Techniques For Avamentioning

confidence: 99%

A Survey of Performance Enhancement Techniques of Antipodal Vivaldi Antenna

2020

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The increasing proliferation of advanced devices for UWB, 5G communication, micrometerwave, and millimeter-wave communication demands an antenna which can handle huge data rates, provides high gain and stable radiation pattern as a panacea of most of the current wireless communication problems. Many different antenna designs have been proposed by the researchers but, Antipodal Vivaldi Antenna (AVA) has drawn the attention of most of the researchers because of its high gain, wide bandwidth, less radiation loss, and stable radiation pattern. Different methods are presented to make AVA more compact while maintaining the performance of an antenna to an acceptable level. These different methods are substrate choice, flare shape, slots, and feeding connectors. Also, AVA performance can be enhanced by incorporating corrugation, dielectric lens, patch in between two flares of AVA, balanced AVA (BAVA), metamaterial, computational intelligence (CI), and AVA array. The AVA performance enhancement techniques modify the electrical and physical properties of an antenna which in turn improves its performance. A large number of performance enhancement methods of AVA design have been proposed, however, no comprehensive study exists to categorize these performance enhancement techniques and outline their concepts, advantages, disadvantages, and applications. So, in this paper, we have attempted to outline all methods available for enhancing and optimizing the parameters of AVA. Additionally, to validate some of the important performance enhancement methods, they are incorporated in the basic conventional AVA design and further simulation results are obtained for the same which are in line with the surveyed literature. Each method is explained in detail by incorporating its key points, merits, and demerits. Moreover, illustrations from the literature are given to demonstrate improvement in the parameters as a result of applying a particular performance enhancement technique. INDEX TERMS Antipodal Vivaldi antenna (AVA), AVA array, balanced antipodal Vivaldi antenna (BAVA), corrugations, dielectric lens, metamaterial, parasitic patch, slots.

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“…In order to meet these requirements, antennas usually adopted in GPR applications are: Vivaldi [1][2][3], horn [1], [4][5][6], spiral [4], [7][8], bowtie [1], [4].…”

Section: Introductionmentioning

confidence: 99%