High‐efficiency leaky‐wave antenna with continuous wide‐angle scanning using hybrid composite right/left handed structure

Zhong, Tao; Hou, Zhi‐Ling; Chen, Qiang; Niu, Zicheng

doi:10.1002/mmce.21931

Cited by 5 publications

(4 citation statements)

References 16 publications

(14 reference statements)

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“…Each period was added to five rows to improve the antenna aperture. Moreover, six periods constitute the complete structure of metasurface to increase the radiation efficiency 20 . It is worthily mentioned that this 1‐D holographic metasurface has only five different sizes of unit cells, and it is compact in transverse direction compared with the traditional 2‐D HMLWA in Figure 2.…”

Section: Theory and Design Of 1‐d Hmlwamentioning

confidence: 99%

Metantenna design with one‐dimensional holographic concept

Liu

Wang

et al. 2021

Int J RF Microw Comput Aided Eng

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In this paper, metasurface antenna (metantenna) with one‐dimensional holographic concept is proposed and an example of producing 50° radiation beam angle at 16 GHz is taken to certify the metantenna operating principle. We first introduce one‐dimensional holographic theory to simplify the metasurface design. By this means, compared with the traditional two‐dimensional metantenna, the integral structure has fewer unit cells, simpler structure and the beam‐tilt is achieved as well. Simultaneously, to feed the metasurface above efficiently, the tapered microstrip line is modified by adding a sloping metal strip as a plane‐wave surface wave launcher, thus obtaining a smooth transition from Quasi transverse electromagnetic wave to transverse magnetic wave and a broad frequency band of impendence matching. A prototype is fabricated and tested at last. The measured radiation beam angle is 49° at 16 GHz, which approximates to the desired beforehand. On the other hand, this metantenna has a beam scanning angle of 24° to 63° from 13 to 17.5 GHz. The gain is about 13 to 15 dBi and the half power beam width is about 9° in the above frequency range. It has features of stable high gain, narrow beamwidth and high radiation efficiency.

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Section: Theory and Design Of 1‐d Hmlwamentioning

confidence: 99%

Metantenna design with one‐dimensional holographic concept

Liu

Wang

et al. 2021

Int J RF Microw Comput Aided Eng

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“…However, this type of LWAs suffer from the open-stop band (OSB) effect when the beam scans through the broadside, causing the degradation of the gain and the deterioration of the reflection coefficient at broadside frequency. To suppress the OSB effect, many related methods have been investigated, including CRLH structures, [29][30][31][32][33][34] impedance matching methods, [35][36][37] and asymmetric structures. [38][39][40][41][42] In, 43 it is confirmed theoretically that the OSB effect of the linear polarized period LWA cannot be eliminated if the LWA unit cells are symmetric.…”

Section: Introductionmentioning

confidence: 99%

A periodic meandering microstrip line leaky‐wave antenna with consistent gain and wide‐angle beam scanning

Wang

Sun

Xue

2022

Int J RF Mic Comp-Aid Eng

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In this article, a periodic leaky‐wave antenna (LWA) with wide‐angle beam scanning and stable gain is proposed based on the meandering microstrip line. Due to the meandering property of the microstrip line, the longitudinal dimension of the antenna is reduced. Firstly, the radiation characteristic of the meandering microstrip line is analyzed in detail. Each corner of the meandering microstrip line is modeled by a shunt capacitance and shunt radiation conductance to acquire the equivalent circuit. Then, the frequency balanced condition is investigated based on the established equivalent circuit to realize continuous beam scanning through broadside. Subsequently, the method of open‐stop band (OSB) suppression is studied by introducing asymmetric perturbation on the LWA unit cell, which actually can be applied to eliminate the OSB effect in arbitrary symmetric LWAs. Finally, an antenna prototype is simulated and measured. The measured results agree well with the simulated results, validating the proposed method of OSB suppression. The measured results show that the designed antenna exhibits the beam scanning capacity of −47° to +76° with the frequency varying from 5.0 to 7.8 GHz and gain variation of 2.9 dB.

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“…Spoof surface plasmon polaritons (SSPPs) is a kind of slow-wave waveguide structure, the surface wave is generated by periodically grooving the metal surface. Antennas based on SSPPs can be roughly divided into three categories: leaky-wave antennas, [1][2][3] endfire antennas [4][5][6] and other antennas. 7,8 Among them, leaky-wave antennas have the characteristics of high radiation efficiency, strong directivity and beam scanning capabilities, which can be widely used for radar and wireless communications systems.…”

Section: Introductionmentioning

confidence: 99%

Broadband circularly polarized leaky‐wave antenna based on spoof surface plasmon polaritons

Zhang

Xie

et al. 2022

Int J RF Mic Comp-Aid Eng

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A broadband circularly polarized (CP) leaky‐wave antenna fed by spoof surface plasmon polaritons (SSPPs) is proposed in this paper. The antenna consists of SSPPs transmission line and the periodic open rings. The periodic open rings are loaded at both sides of the transmission line with 90° phase shift to obtain CP responses. Meanwhile, the antenna can obtain a wide‐angle beam scanning due to the dispersion characteristics of SSPPs. The simulated results indicate that the antenna has a wide CP impedance bandwidth of 44.9% from 3.8 to 6 GHz with a return loss smaller than −10 dB and the antenna axial ratio (AR) lower than 3 dB. Also, the antenna has a wide scanning angle that ranges from −54° to +10°. For validation, the antenna was fabricated and the measured results agreed well with simulated ones.

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High‐efficiency leaky‐wave antenna with continuous wide‐angle scanning using hybrid composite right/left handed structure

Cited by 5 publications

References 16 publications

Metantenna design with one‐dimensional holographic concept

Metantenna design with one‐dimensional holographic concept

A periodic meandering microstrip line leaky‐wave antenna with consistent gain and wide‐angle beam scanning

Broadband circularly polarized leaky‐wave antenna based on spoof surface plasmon polaritons

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