SIW Antenna With Polarizer at ku-Band

Alonso, J.; Calderón, Gloria Amazares; Pérez, Manuel Sierra

doi:10.1109/tap.2015.2414471

Cited by 16 publications

(2 citation statements)

References 13 publications

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“…Circularly polarized (CP) antennas have many advantages compared with linear polarization (LP) antennas in mitigating multipath interference, reducing Faraday rotation efects, and suppressing polarization mismatch. Terefore, they are widely used in satellite communication systems and remote sensing [1][2][3][4]. Besides, the antenna array can achieve higher gain with narrower beamwidth to compensate the spatial attenuation for long-distance communication [5,6].…”

Section: Introductionmentioning

confidence: 99%

A Ku Wideband Circularly Polarized Microstrip Antenna Array with Low Profile Crossed-Dipole Element

Liu

Zhang

Zhao

2023

International Journal of Antennas and Propagation

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This paper presents a novel Ku wideband circularly polarized (CP) antenna array composed of crossed-dipole element (CDE) and fed through sequential rotation (SR) feeding technique. Unlike the traditional CP-CDE fed by coaxial cable that usually works at low frequencies, the proposed CDE consists of two orthogonal heart-shaped patch dipoles that can work at frequencies as high as Ku-band, at the same time achieving a larger bandwidth. A feeding structure is proposed without welding, so potential errors in the antenna assembly process can be mitigated. A 2 × 2 CP antenna array with wideband SR feeding network is designed based on the CDE to further expand the axial ratio (AR) bandwidth. The designed antenna array is fabricated using the multilayer printed circuit board (PCB) technology and measured in anechoic chamber using the planar near-field measurement facility. The measured results show that −10 dB impedance bandwidth of 44% (11.6–18.15 GHz) along with 3 dB AR bandwidth of 38.7% (12–17.65 GHz) and 3 dB gain bandwidth of 34.6% (12.2–17.3 GHz) as well as 11.02 dBic peak gain have been achieved while maintaining a lower profile.

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Section: Introductionmentioning

confidence: 99%

A Ku Wideband Circularly Polarized Microstrip Antenna Array with Low Profile Crossed-Dipole Element

Liu

Zhang

Zhao

2023

International Journal of Antennas and Propagation

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“…In particular, if several resonant elements for circular polarization are placed above a microstrip patch antenna that radiates LP waves, the corresponding orthogonal modes would be excited due to the near-field coupling to the bottom radiator and could be tuned individually with subtle changes to the resonant elements. Likewise, these polarizers could be applied in environments demanding temporal polarization transformation, such as for satellite communication [ 22 , 23 ], antenna arrays and radomes [ 24 , 25 ].…”

Section: Introductionmentioning

confidence: 99%

A Low-Profile Dual-Layer Patch Antenna with a Circular Polarizer Consisting of Dual Semicircular Resonators

Guo

Tang

2018

Sensors

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In this paper, a circular polarizer comprising dual semicircular split-rings (DSSRs) is presented. By placing it above an elliptical radiator that radiates linearly polarized (LP) waves, dual-layer patch antennas capable of radiating right-hand (RH) or left-hand (LH) circularly polarized (CP) waves are achieved in terms of the different offset direction of the bottom splits of the DSSRs. Because of both the capacitive coupling to the radiator and the degenerate modes existing in the excited DSSRs, the DSSRs collaboratively result in a circularly polarized radiation, successfully converting incident LP waves into CP ones. Simulated results show that the impedance, axial ratio (AR), and gain frequency response of both proposed CP antennas are identical, with a simulated 3-dB AR bandwidth of 72 MHz covering 2.402–2.474 GHz and a gain enhanced by 3.9 dB. The proposed antennas were fabricated and measured, revealing an operational bandwidth of 65 MHz (2.345–2.41 GHz) and a peak gain up to 9 dBi. Moreover, a low profile of 0.063λ0 is maintained. The proposed CP antennas could be as a candidate for wireless target detection applications in terms of their identical frequency response property.

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