Leaky Rectangular Waveguide With Circular Polarization Property

Huo, Xingying; Wang, Junhong; Li, Dawei; Zhang, Zhan; Chen, Meie; Li, Zheng

doi:10.1109/tap.2015.2473693

Cited by 10 publications

(4 citation statements)

References 9 publications

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“…In recent years, leaky wave antennas (LWAs) have received considerable attentions in radar system and satellite communication fields for its frequency-scanning capability and wide bandwidth feature [1]. However, due to the absence of the left-handed (LH) characteristics, conventional leaky wave antennas can only work in the right-handed (RH) frequency region and scan their beams in forward direction, which greatly limits their applications in practical use [2].…”

Section: Introductionmentioning

confidence: 99%

Compact CRLH-SIW Based LWA Array With Periodical Loading for Ku-Band Applications

Zhang¹,

Ye²,

Ni³

2023

PIER Letters

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A novel compact composite right/left-handed (CRLH) substrate integrated waveguide (SIW) based leaky wave antenna (LWA) is proposed. Mushroom-inspired unit cell is utilized to achieve CRLH transmission property as well as energy leakage. Periodically loaded metallic vias, which act as an internal 1 : 2 power divider, are along the center line of the SIW structure, leading to a compact antenna size. The LWA can be regarded as an antenna array whose two elements are excited by two newly produced quasi-TE 10 modes, respectively, and therefore, the antenna peak gain is enhanced. Good agreements are obtained between the simulated and measured results. Continuous beam scanning feature indicates that the proposed design is a balanced frequency scanning work operating in Ku-band.

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Section: Introductionmentioning

confidence: 99%

Compact CRLH-SIW Based LWA Array With Periodical Loading for Ku-Band Applications

Zhang¹,

Ye²,

Ni³

2023

PIER Letters

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“…In these cases, intricate multilayer corporate-feed networks are usually adopted to properly feed the radiators via coupling cavities, leading to a wideband radiation performance [1]- [3]. More classic and simpler solutions [4], [5] arrange crossed or shaped slots operating in a leaky-wave mode to avoid grating lobes.…”

Section: Introductionmentioning

confidence: 99%

Novel Asymmetric T-Shaped Radiating Element for Circularly-Polarized Waveguide Slot Arrays

Herranz-Herruzo

Ferrando-Rocher

Valero‐Nogueira

et al. 2021

IEEE Trans. Antennas Propagat.

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Waveguide slot arrays are a widely used solution to attain linearly-polarized high-gain antennas. In this paper, an all-metal T-shaped radiating element is conceived with the aim to replace the usual rectangular slots and attain circularly-polarized arrays, preserving their good properties. The polarization conversion is made possible thanks to the inclusion of a parasitic arm perpendicular to the main active slot. Due to the fact that this second arm is not directly fed by the waveguide but coupled to the active slot, the T-shaped element can be used in any array originally formed by metallic rectangular slots. The design of resonant shunt arrays has been addressed here for validation purposes. The experimental results of two sample linear arrays at 30 GHz demonstrate the design accuracy and manufacturing reliability, reporting an axial ratio below 2 dB within a bandwidth of 1.9 GHz and a peak efficiency around 98%.

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“…With large numbers of mountain railways and railway tunnels built in China, the diversification of the information service is rapidly developed, which requires the real-time and reliable data transmission including pictures, sounds, and environmental parameters. Leaky rectangular waveguide with its simple structure, flexible installation, great capacity of transmission power, low transmission loss at high frequency, and many other advantages has been widely researched and applied in the wireless communication systems [1][2][3][4][5][6][7][8][9][10], particularly in some environments where uniform coverage of radio wave is needed, which can replace the traditional distributed antennas [1][2][3][4][5][6]. In some specific confined spaces, the leaky rectangular waveguide shows much more advantages in realizing uniform and stable radio wave coverage [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Right/Left-Handed Leaky Rectangular Waveguide with Broadside Radiation Property

Huo

2021

International Journal of Antennas and Propagation

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When a leaky rectangular waveguide is used to realize the coverage of radio wave in the small confined spaces, there will be a shadow region, which influences the coverage performance. In this paper, the traditional leaky rectangular waveguide is improved according to the principle of the equivalent circuit, by cutting interdigital slots in the upper wall and adding uniserial metal vias between the upper and lower walls of the rectangular waveguide. Thus, the right/left-handed transmission line property is introduced to the periodic leaky-waveguide (LWG), realizing the broadside radiation with relatively high gain (15.7 dBi), good cross polarization (−50 dB), and narrow half-power beamwidth (10.9°) at 6.97 GHz and providing a method for a uniform coverage of the radio wave in rooms without a shadow region.

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Leaky Rectangular Waveguide With Circular Polarization Property

Cited by 10 publications

References 9 publications

Compact CRLH-SIW Based LWA Array With Periodical Loading for Ku-Band Applications

Compact CRLH-SIW Based LWA Array With Periodical Loading for Ku-Band Applications

Novel Asymmetric T-Shaped Radiating Element for Circularly-Polarized Waveguide Slot Arrays

Right/Left-Handed Leaky Rectangular Waveguide with Broadside Radiation Property

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