A Wideband Circularly Polarized Filtering Patch Antenna With Strip Network

Xu, Tao; Li, Jian-Feng; Ye, Liang-Hua; Wu, Duo-Long; Zhang, Gary

doi:10.1109/lawp.2023.3300168

Cited by 4 publications

(1 citation statement)

References 17 publications

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“…In Li et al, 3 the sequential rotation technique was adopted for a cross‐shaped dipole antenna to widen the axial ratio (AR) bandwidth. Three CP modes were excited by a loop slot and a strip network in the patch antenna, mainly to create a larger AR bandwidth than the antenna fractional bandwidth (FBW) 4 . In Wu et al, 5 radiating patches were arranged orthogonally one‐by‐one in both the x ‐ and y ‐directions.…”

Section: Introductionmentioning

confidence: 99%

A low‐profile circularly polarized cavity‐based waveguide aperture antenna

Mahmud,

Mohammed,

Jarjees

et al. 2024

Micro & Optical Tech Letters

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This article proposes a new design of a circularly polarized (CP) aperture antenna based on a dual‐mode rectangular waveguide cavity‐resonator. A capacitive iris is employed to attain a strong coupling between the cavity and the input port, resulting in a larger fractional bandwidth (FBW) than a conventional aperture antenna. Another capacitive iris is embedded at the corner of the radiating aperture and extended into the cavity to maintain equal amplitude and a phase difference of 90° between the radiated electric (E) fields of the TE101 and TE110 modes, and thus yielding CP radiation. The proposed antenna has been fabricated using a computer numerical control machine. The antenna has an FBW of 18% at center frequency (f0) f0 = 10 GHz when the reflection coefficient (S11) S11 = −10 dB. The 3‐dB axial ratio bandwidth is 7%. A gain of 8.0 dBic is found at 10.06 GHz. The low profile and competitive performance of the antenna make it a good candidate in radar applications.

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Section: Introductionmentioning

confidence: 99%