Planer slot antenna based on triangle corrugated substrate integrated waveguide cavity

Yao, Siyuan; Xu, Feng; Yang, Jian; Cao, Lewei

doi:10.1109/apcap.2017.8420355

Cited by 4 publications

(1 citation statement)

References 9 publications

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“…Using substrate integrated waveguides (SI-Ws), extensively used for print circuit boards (PCBs) and that have advantageous properties such as low cost, low profile, low loss and easy integration with microstrip and coplanar circuits [6], [7], enables design of LWAs for high frequency bands. However, the metallic vias of SIWs are not suitable for some integrated circuits [8] and, as a solution to this, corrugated SIW (CSIW) structures, which uses opencircuit microstrip stubs in lieu of metallic vias in order to artificially create electric sidewalls, have been proposed [9]. CSIWs maintains DC isolation between the top and bottom conductors through the open-circuit stubs instead of metallic vias.…”

Section: Introductionmentioning

confidence: 99%

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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