Miniaturized Ultrawideband Half-Mode Vivaldi Antenna Based on Mirror Image Theory

Yin, Zhangfei; He, Guoqiang; Yang, Xue‐Xia; Gao, Steven

doi:10.1109/lawp.2020.2977503

Cited by 27 publications

(17 citation statements)

References 21 publications

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“…These antennas are used in radar application and are also used in microwave imaging [ 77 ]. The antenna has received attention as a suitable candidate for emerging technologies, such as 5G [ 78 ], wideband communication using image theory technique [ 79 ] and high-gain antenna using optical lens [ 80 ]. Figure 10 illustrate a design example of Vivaldi antenna [ 81 ].…”

Section: Antenna Overviewmentioning

confidence: 99%

The Recent Advancement in Unmanned Aerial Vehicle Tracking Antenna: A Review

Kelechi¹,

Alsharif

Oluwole³

et al. 2021

Sensors

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Unmanned aerial vehicle (UAV) antenna tracking system is an electromechanical component designed to track and steer the signal beams from the ground control station (GCS) to the airborne platform for optimum signal alignment. In a tracking system, an antenna continuously tracks a moving target and records their position. A UAV tracking antenna system is susceptible to signal loss if omnidirectional antenna is deployed as the preferred design. Therefore, to achieve longer UAV distance communication, there is a need for directional high gain antenna. From design principle, directional antennas are known to focus their signal energy in a particular direction viewed from their radiation pattern which is concentrated in a particular azimuth direction. Unfortunately, a directional antenna is limited by angle, thus, it must always be directed to the target. The other limitation of a UAV mechanical beam steering system is that the system is expensive to maintain and with low reliability. To solve this problem, we are proposing the use of MIMO technology as a readily available technology for UAV beyond line of sight technology. Although UAV antenna tracking is domiciled in the mechanical beam steering arrangement, this study shows that this native technology could be usurped by MIMO beam forming.

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Section: Antenna Overviewmentioning

confidence: 99%

The Recent Advancement in Unmanned Aerial Vehicle Tracking Antenna: A Review

Kelechi¹,

Alsharif

Oluwole³

et al. 2021

Sensors

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show abstract

“…In this paper, the structural constraints in [1] are relaxed and optimized to achieve a broad frequency bandwidth, as required by the integrated applications mentioned in Table 1. To minimize the XPLs and beam squints, an antenna pair with mirror-imaged structures [21] is constructed to achieve two goals. First, a second level's symmetric structure ensures a proper X-pol components' cancellation for low XPLs in the broadside direction.…”

Section: Introductionmentioning

confidence: 99%

An Optimum Design of Paired Balanced Antipodal Vivaldi Antennas With Mirror-Imaged Symmetric Architectures for Ultra-Broadband Characteristics From Microwave to Millimeter-Wave Frequency Ranges

Chou

Lin

2022

IEEE Access

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This paper presents a balanced antipodal Vivaldi antenna design to produce ultra-broadband radiations from microwave to millimeter-wave frequencies. In particular, this work relaxes the design constraints in [1] to optimize the geometrical parameters to broaden the operational frequency bandwidth, where 147% relative bandwidth has been achieved. Moreover, in this optimized design, the beam squint and cross-polarization (X-pol) discrepancy at high frequencies are improved by pairing two mirror-imaged antenna structures to form an integrated one. The resulted X-pol level can retain good performance in the entire band. The beam squint can be minimized by taking advantage of the 3dB gain increase provided by the array factor. HFSS full-wave simulations first examine the proposed work, further validated by measurement from a basic antenna prototype. The beam squint is less than 3 degrees in the major middle part of the achieved band, and the X-pol level is less than -30dB for the paired antennas.

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“…The dual exponential tapered slot antennas (DETSA) are a type of conventional Vivaldi antennas [5][6][7]. Recently, many types of TSA antennas such as linear TSA, conformal TSA, parabolic TSA, and logarithmic TSA were investigated extensively in [4][5][6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Miniaturized Antipodal Vivaldi Antenna with Improved Bandwidth Using Exponential Strip Arms

2021

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In this paper, a miniaturized ultra-wideband antipodal tapered slot antenna with exponential strip arms is presented. Two exponential arms with designed equations are optimized to reduce the lower edge cut-off frequency of the impedance bandwidth from 1480 MHz to 720 MHz, resulting in antenna miniaturization by 51%. This approach also improves antenna bandwidth without compromising the radiation characteristics. The dimension of the proposed antenna structure including the feeding line and transition is 158 × 125 × 1 mm3. The results show that a peak gain more than 1 dBi is achieved all over the impedance bandwidth (0.72–17 GHz), which is an improvement to what have been reported for antipodal tapered slot and Vivaldi antennas with similar size.

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Miniaturized Ultrawideband Half-Mode Vivaldi Antenna Based on Mirror Image Theory

Cited by 27 publications

References 21 publications

The Recent Advancement in Unmanned Aerial Vehicle Tracking Antenna: A Review

The Recent Advancement in Unmanned Aerial Vehicle Tracking Antenna: A Review

An Optimum Design of Paired Balanced Antipodal Vivaldi Antennas With Mirror-Imaged Symmetric Architectures for Ultra-Broadband Characteristics From Microwave to Millimeter-Wave Frequency Ranges

Miniaturized Antipodal Vivaldi Antenna with Improved Bandwidth Using Exponential Strip Arms

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