Leaky Wave Antenna Based on Periodically Truncated SSPP Waveguide

Ren, Bocong; Li, Weiwen; Qin, Zhaozhao; Wang, Yu; Zhang, Liangcai; Zhang, Baoping

doi:10.1007/s11468-019-01081-x

Cited by 13 publications

(3 citation statements)

References 20 publications

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“…There are three general methods to achieve periodic LWA of planar structures. One method is to utilize periodic structures on the transmission line itself [9], [17]- [22], such as SSPPs LWAs with periodic impedance modulation [23], SSPPs LWAs that utilize their own periodicity [24], and metagrating [25]- [27] . However, the periodic structure itself can affect the transmission line's dispersion curve, increasing the difficulty of adjustment.…”

Section: Introductionmentioning

confidence: 99%

Linearly Scanning Spoof Surface Plasmon Polaritons Leaky-Wave Antenna With High Scanning Rate

Wang,

Liu,

Guan

et al. 2024

IEEE Open J. Antennas Propag.

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In this paper, a wide-angle linearly scanning leaky-wave antenna (LWA) based on spoof surface plasmon polaritons (SSPPs) with a very high scanning rate is proposed. A sine curve period is introduced to construct the SSPPs transmission line in the form of a sine curve, which can transform the dispersion curve to the fast wave region to realize the desired dispersion properties for linearly high scanning rate LWA. The simulated results show that the proposed LWA achieves a scanning angle range of 109° over a narrow operation bandwidth of 7.73-8.13 GHz, implying high linearity, and a high scanning rate. A prototype is fabricated and measured, indicating that the measured scanning angle range is 100° within the frequency band of 7.82-8.21 GHz, and the relative average scanning rate (RASR) is 2053.4°. Compared with ideal linear scanning in the operating frequency band, the mean absolute value error (MAVE) of the measured scanning angle-frequency curve is 1.032°, which validates the proposed design with good agreement between the simulated and measured results. The high scanning rate and scanning linearity performances of the LWAs exhibit great value in reducing both the occupation of electromagnetic spectrum resources and the requirements of accuracy for transmitters and receivers, respectively.INDEX TERMS Leaky-wave antenna (LWA), high scanning rate, linear scanning, spoof surface plasmon polaritons (SSPPs).

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Section: Introductionmentioning

confidence: 99%

Linearly Scanning Spoof Surface Plasmon Polaritons Leaky-Wave Antenna With High Scanning Rate

Wang,

Liu,

Guan

et al. 2024

IEEE Open J. Antennas Propag.

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“…Meanwhile, the dispersion characteristics of SSPP modes can be flexibly controlled by changing the structural parameters to obtain adjustable or reconfigurable microwave components and circuits. [7][8][9][10] Planar SSPP waveguides have drawn great attention for the miniaturization of microwave circuits. A thin SSPP structure can be manufactured by the etching of microwave circuit boards or the planar lithography of terahertz devices.…”

mentioning

confidence: 99%

Compact spoof surface plasmonic waveguide with controllable cutoff frequency and wide stop band

Ren

Zhang

et al. 2021

Appl. Phys. Express

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To adjust the transmission band while keeping the width of a spoof surface plasmon polariton (SSPP) waveguide unchanged, periodic cells with T-shaped conductor branches on both sides are used. By controlling the top lateral strips of branches, the adjustable range of cutoff frequencies can reach approximately 3.5 GHz. Thus, compromised regulation of the field confinement and transmission loss is easily achieved, improving the transmission performance of SSPP modes. By loading open conductor rings onto T-shaped branches to construct a split ring resonator (SRR), a band-rejection filter is realized. When multiple SRRs with gradient lengths are loaded onto one side of the SSPP waveguide, a broad stop band with a relative bandwidth of 18% is achieved. The proposed structures are also advantageous for the miniaturization of microwave circuits.

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“…There has been a ring OAM antenna based on single-port fed SSPP structure, but the radiation is generated by coupling elements and the structure size is still large 27 . Through the analysis of the radiation and transmission characteristics of SSPP leaky wave structures, we have proposed the concept of single-port SSPP leaky wave antennas 28 . In this paper, single-fed leaky-wave emitters based on SSPP mode are proposed to radiate high-order, broadband, and near-plane OAM waves.…”

mentioning

confidence: 99%

Wideband and high-order microwave vortex-beam launcher based on spoof surface plasmon polaritons

Zhang

Deng²,

et al. 2021

Sci Rep

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The electromagnetic vortex carrying orbital angular momentum (OAM), which is first studied at optical frequency, has begun to attract widespread attention in the field of radio-frequency/microwave. However, for the OAM mode generated by traditional single antennas, there are problems such as low order and narrow bandwidth, and complex structures such as dual-fed networks may be required. In this paper, based on spoof surface plasmon polariton (SSPP) mode leaky-wave antenna, a single-port traveling-wave ring is proposed to radiate high-order OAM modes working near the cut-off frequency of SSPP state. The achieved 12-order OAM mode within 9.1–10.1 GHz (relative bandwidth of 10.4%) has the main radiation direction close to the antenna surface, forming a plane spiral OAM (PSOAM) wave, which reduces the requirements for mode purity in practical applications. This SSPP ring using periodic units as radiating elements can be an effective radiator for broadband and large-capacity OAM multiplexing communications. The structural characteristics of single feed contribute to the integration of microwave circuits.

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Leaky Wave Antenna Based on Periodically Truncated SSPP Waveguide

Cited by 13 publications

References 20 publications

Linearly Scanning Spoof Surface Plasmon Polaritons Leaky-Wave Antenna With High Scanning Rate

Linearly Scanning Spoof Surface Plasmon Polaritons Leaky-Wave Antenna With High Scanning Rate

Compact spoof surface plasmonic waveguide with controllable cutoff frequency and wide stop band

Wideband and high-order microwave vortex-beam launcher based on spoof surface plasmon polaritons

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