Scanning Rate Enhancement of Leaky-Wave Antennas Using Slow-Wave Substrate Integrated Waveguide Structure

Guan, Dong‐Fang; Zhang, Qingfeng; You, Peng; Yang, Zhang‐Biao; Zhou, Yang; Yong, Shaowei

doi:10.1109/tap.2018.2831257

Cited by 133 publications

(53 citation statements)

References 21 publications

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“…where β 0 is the fundamental mode phase constant. Equation (3) shows that the space harmonics are all slow waves for n ≥ 0, meanwhile, for n < 0, the space harmonics can be fast waves. In order to get the maximum radation efficiency and obtain a single radiated beam, the n = −1 space harmonic is usually chosen to convert the transmission wave to a radiation wave.…”

Section: Sspp Leaky-wave Antenna Design and Studymentioning

confidence: 99%

“…Leaky-wave antennas (LWAs) have attracted significant attention in microwave engineering due to their advantages of simple feeding network, frequency beam scanning, high directivity and low cost [1]. Because a fast wave transmission line (TL) can feed a LWA to radiate, the initial design of LWAs are based on the waveguides supporting fast wave modes, such as slotted rectangular waveguides [2] and substrate integrated waveguides [3]. Many periodic structures operating on space harmonic waves are explored to feed LWAs, such as microstrip lines, groove waveguides and metamaterials structures [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

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Wide-Angle Beam Scanning Leaky-Wave Antenna Using Spoof Surface Plasmon Polaritons Structure

et al. 2018

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This paper proposes a wide-angle beam scanning leaky-wave antenna (LWA) fed by a novel spoof surface plasmon polaritons (SSPP) transmission line (TL). In the proposed LWA, circular metallic patches are periodically loaded on both sides of the SSPP TL alternately, and convert guided waves into radiating waves. The transmission characteristics of the proposed SSPP TL are analyzed, and the transmission characteristics and radiation patterns of the proposed LWA are simulated and measured. The simulated and measured results show that the proposed LWA provides approximately 12.5 dBi of radiation gain within a frequency range of 8–24 GHz, and a beam scanning range of 90° from forward to backward continuously by increasing the feeding frequency. The proposed LWA, based on a novel SSPP TL, has advantages of single-layer conductor, continuous wide-angle beam scanning, and high gain especially at the broadside direction, which are difficult realize using conventional LWAs.

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Section: Sspp Leaky-wave Antenna Design and Studymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Wide-Angle Beam Scanning Leaky-Wave Antenna Using Spoof Surface Plasmon Polaritons Structure

et al. 2018

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“…Recently, SSPP was introduced to SIW and hybrid integrating SIW‐SSPP waveguides were developed which combine the advantages of both SIW and SSPP . As for antennas, the hybrid structure is used to enhance the scanning rate of the leaky wave antenna in Reference , with the slow‐wave feature of SSPP and fast‐wave feature of SIW. However, only even mode and leaky‐wave radiation were realized in the reported SIW‐SSPP works.…”

Section: Introductionmentioning

confidence: 99%

An SIW antenna utilizing odd‐mode spoof surface plasmon polaritons for broadside radiation

Liu

Yang

Guan

et al. 2020

Int J RF Microw Comput Aided Eng

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In this article, a substrate integrated waveguide (SIW) antenna utilizing odd‐mode spoof surface plasmon polariton (SSPP) for broadside radiation is proposed. Double gratings are etched on the top surface of SIW and the SSPP odd‐mode is excited on this hybrid SIW‐SSPP structure. The proposed SIW antenna has open‐circuit termination and can realize broadside radiation. A prototype of the SIW‐based odd‐mode antenna is fabricated. Reasonable accordance is achieved between measured results and simulated results. The antenna impedance bandwidth is about 5.5% (12.4~13.1 GHz) with |S11| < −10 dB. Stable broadside radiation is also realized within the operating band of 12.3~13.3 GHz and the measured gain varies from 5.66 to 6.34 dB in the frequency band. The proposed broadside radiation antenna is suitable for wireless communication systems due to its compact structure and good radiation performances.

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“…Circular polarized and quadri‐polarized frequency scanning antennas were proposed without complex feeding network. Slow‐wave effect was introduced to SIW and the beam scanning rate was significantly improved . Using long slot as radiator on the broadside of SIW, the proposed antenna has low and controllable sidelobe level characteristic .…”

Section: Introductionmentioning

confidence: 99%

High gain substrate integrated waveguide beam scanning antenna with sub‐array elements

Yang

Guan

Liu

et al. 2019

Int J RF Microw Comput Aided Eng

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A method to enhance the gain of substrate integrated waveguide (SIW) beam scanning antenna is proposed in this article. 2 × 2 SIW cavity‐backed sub‐arrays are employed in array design. The antenna is constructed on two layers. The top layer places four SIW cavity‐backed sub‐arrays as radiating elements and the bottom layer is an SIW transmission line to feed the sub‐arrays. Beam scanning feature can be obtained due to the frequency dispersion. Moreover, through separating radiators to the other layer and using 2 × 2 SIW cavity‐backed sub‐arrays as radiating parts, the antenna gain is improved significantly. For a linear array, 4.1 to 6.8 dB gain enhancement is achieved compared to a conventional SIW beam scanning antenna with the same length. Then, the linear array is expanded to form a planar array for further gain improvement. A 64‐element planar beam scanning array is designed, fabricated, and tested. Experimental results show that the proposed planar array has a bandwidth from 18.5 GHz to 21. 5 GHz with beam scanning angle from −5° to 11.5° and gain in the range of 20.5 to 21.8 dBi. The proposed high gain beam scanning antennas have potential applications in radar detection and imaging.

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Scanning Rate Enhancement of Leaky-Wave Antennas Using Slow-Wave Substrate Integrated Waveguide Structure

Cited by 133 publications

References 21 publications

Wide-Angle Beam Scanning Leaky-Wave Antenna Using Spoof Surface Plasmon Polaritons Structure

Wide-Angle Beam Scanning Leaky-Wave Antenna Using Spoof Surface Plasmon Polaritons Structure

An SIW antenna utilizing odd‐mode spoof surface plasmon polaritons for broadside radiation

High gain substrate integrated waveguide beam scanning antenna with sub‐array elements

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