A new kind of circularly polarized leaky-wave antenna based on corrugated substrate integrated waveguide

Liu, Chunming; Li, Zheng; Wang, Junhong

doi:10.1109/mape.2013.6689827

Cited by 10 publications

(8 citation statements)

References 8 publications

(8 reference statements)

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“…A comparison of pertinent parameters and performance between our proposed CP CSIW LWA and previously published CP LWAs are showed in Table 2. We can see that the impedance bandwidth, the 3-dB CP bandwidth and the scanning range of our proposed LWA are better than those in Refs [14], [19], [21] and [22]. The broad impedance bandwidth is very advantageous for applications that require high scanning resolution.…”

Section: B Comparison With Previous Workmentioning

confidence: 73%

“…A high-gain millimeter-wave leaky-wave antenna based on a bent corrugated SIW (BCSIW) with a broad frequency range from 22 to 29.2 GHz and a large beam angle range from −69 • to −10 • was recently demonstrated [11], and two electronically controlled LWAs that realized beam scanning at fixed frequencies by using loaded varactor diodes [12] and PIN diodes [13] on the CSIW structure have been reported. A circularly polarized (CP) LWA based on a CSIW, which utilized two compound slot pair arrays etched on the top of the antenna to achieve broadside radiation and good axial ration (AR) in the main beam direction, has also been proposed [14].…”

Section: Introductionmentioning

confidence: 99%

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A Broadband High-Gain Circularly Polarized Wide Beam Scanning Leaky-Wave Antenna

et al. 2020

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A new type of broadband circularly polarized leaky-wave antenna (LWA) with high-gain based on a corrugated substrate integrated waveguide (CSIW) structure is proposed and investigated. The CSIW structure that employs open-circuit stubs to replace metallic vias has the advantages of low-cost and easy fabrication as compared to conventional substrate integrated waveguides. Each unit-cell of the proposed LWA consists of two quarter-wavelength microstrip lines and a half-mode CSIW cell with three opencircuit stubs. Two M-shaped slots etched on the half-mode CSIW cell enables the generation of circularly polarized (CP) radiation. The full LWA, which consists of thirteen matched unit-cells cascaded along the direction of propagation enables continuous backward to forward beam scanning. The properties of the CSIW structure, including impedance matching and phase constant, are analyzed by Bloch impedance and dispersion simulations and the influence of the dimensions of the open-circuit stubs on the CP LWA performance is also investigated. A protype of the proposed LWA is fabricated and characterized. The measured results indicate that the proposed CSIW LWA has a high peak gain (9.3-12.5 dBi) throughout a large beam-scanning angle range from −28 • to +25 • , and the impedance bandwidth and 3-dB axial ratio (AR) bandwidth are over 40% covering the full Ka-band. INDEX TERMS Leaky-wave antenna (LWA), corrugated substrate integrated waveguide (CSIW), circular polarization (CP), beam scanning, Ka-band, broadband.

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Section: B Comparison With Previous Workmentioning

confidence: 73%

Section: Introductionmentioning

confidence: 99%

A Broadband High-Gain Circularly Polarized Wide Beam Scanning Leaky-Wave Antenna

et al. 2020

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“…Comparison of key parameters with previously reported work is merited and we summarize this in Table 2. The CP LWA based on a CSIW in [13] has a very limited scanning range and the antenna width (0.97λ 0 ) is 10.3% wider than that of the LWA in this work (0.87λ 0 ). The width of the LWA presented here is also 6.5% less than that of our previously reported LWA [14].…”

Section: Fabrication and Characterizationmentioning

confidence: 77%

“…As is evident from Table 2, the bandwidth and scanning range of the LWA proposed here are improved compared to Refs. [7][8][9]13]. Furthermore, compared with LWAs with etched single transverse slot radiators [7][8][9]14], our design enables backward to forward beam scanning through the combination of two different types of radiators.…”

Section: Fabrication and Characterizationmentioning

confidence: 99%

“…The use of open-circuit quarter wavelength stubs also enables design of tunable LWAs. CSIWs thus have great potential for advanced LWA design, exemplified by e.g., a CP LWA based on a CSIW, with etched slot pair elements on the CSIW top surface, which achieved beam scanning and good axial ratio (AR) in the main beam direction [13]. A high gain millimeter-wave LWA based on a bent corrugated SIW with a large beam angle scanning range from −69 • to −10 • in the frequency range from 22 to 29.2 GHz [14] and an electronically controlled LWA, which realized beam scanning at a fixed frequency by loading varactor diodes on the CSIW structure [15] were recently reported.…”

Section: Introductionmentioning

confidence: 99%

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A Novel Millimeter-Wave Backward to Forward Scanning Periodic Leaky-Wave Antenna Based on Two Different Radiator Types

Zhang¹,

Liu²,

Meng³

et al. 2020

PIER

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A periodic millimeter wave leaky-wave antenna (LWA), which has two different types of radiator elements that enable backward to forward radiation, is proposed. The unit-cell of the LWA consists of two quarter-wavelength microstrip lines and two corrugated substrate integrated waveguide (CSIW) cells with S-shaped quarter-wavelength open-circuit stubs. In addition to two parallel edge radiators, a single etched transverse slot with a tilt angle acts as an ancillary radiator, which ensures impedance matching in a large frequency range and achieves the backward to forward scanning. We analyze the proposed design through simulations, characterize a fabricated prototype, and find it to have good radiation properties including broad impedance bandwidth. The measurement results show a high peak gain from 11 to 15.8 dBi with a large scanning angle range from −34 • to +22 • in the K-band operating frequency range.

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Circularly polarised backward, broadside, and forward beam scanning cross‐slot loaded periodic planar leaky‐wave antenna

Barzegari

Forooraghi

Arand

2021

IET Microwaves Antenna & Prop

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In the present study, a novel periodic planar leaky‐wave antenna (PLWA) was designed, simulated, and fabricated based on the substrate integrated waveguide (SIW) technology. The antenna can scan the main beam from around −60° to +20° continuously with complete suppression of open stopband (OSB) by the sweeping frequency from 9.2 to 14.1 GHz. The proposed structure was designed to have circular polarisation (CP) in the entire operating frequency range, where the broadside or centre frequency is 12.25 GHz. Antenna gain in the broadside frequency is around 13 dBi. The radiation efficiency of the structure is improved and equalised through broadside, which is around 80% in the frequency band of operation. Also, series and shunt analysis was applied to the proposed periodic PLWA in the fundamental TE10 mode. In the next step, the asymmetric was applied longitudinally and transversely to the proposed structure to achieve OSB elimination combined with circular polarised radiation simultaneously. The equivalent circuit of the proposed structure was extracted and, finally, the antenna was fabricated. Based on the results, excellent agreement was observed between the measured, modelled, and simulated results.

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A new kind of circularly polarized leaky-wave antenna based on corrugated substrate integrated waveguide

Cited by 10 publications

References 8 publications

A Broadband High-Gain Circularly Polarized Wide Beam Scanning Leaky-Wave Antenna

A Broadband High-Gain Circularly Polarized Wide Beam Scanning Leaky-Wave Antenna

A Novel Millimeter-Wave Backward to Forward Scanning Periodic Leaky-Wave Antenna Based on Two Different Radiator Types

Circularly polarised backward, broadside, and forward beam scanning cross‐slot loaded periodic planar leaky‐wave antenna

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