Design of a Dual-Polarization Single-Ridged Waveguide Slot Array With Enhanced Bandwidth

Luo, Hanbin; Yu, Xiao; Lu, Xiangcheng; Sun, Houjun

doi:10.1109/lawp.2018.2882894

Cited by 12 publications

(5 citation statements)

References 11 publications

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“…Due to the limitation of the element distance, it is challenging to design a phased scanning slotted waveguide array with multiple polarizations. However, the regular fixedbeam slotted waveguide antenna arrays offer numerous valuable electric characteristics, such as wide-band polarization [12], dual-band, dual polarization [13][14][15], and circular polarization. Circularly polarized slotted waveguide arrays can be categorized into three distinct types based on their circular polarizer structures: the compound slots, the circular polarization patch or dipole, and the circular polarization (CP) cavity.…”

Section: Introductionmentioning

confidence: 99%

A Circularly Polarized Non-Resonant Slotted Waveguide Antenna Array for Wide-Angle Scanning

Han,

Liu

2024

Sensors

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A compact circularly polarized non-resonant slotted waveguide antenna array is proposed with the aim of achieving wide-angle scanning, circular polarization, and low side-lobe levels. The designed antenna demonstrates a scanning range of +11° to +13° in the frequency domain and a beam scanning range of −45° to +45° in the phase domain. This design exhibits significant advantages for low-cost two-dimensional electronic scanning circularly polarized arrays. It employs a compact element that reduces the aperture area by 50% compared to traditional circular polarization cavities. Additionally, the staggered array method is employed to achieve an element spacing of 0.57λ within the azimuth plane. Isolation gaps were introduced into the array to enhance the circular polarization performance of non-resonant arrays. The Taylor synthesis method was employed to reduce the side-lobe levels. A prototype was designed, fabricated, and measured. The results indicate superior radiation efficiency, favorable VSWR levels, and an axis ratio maintenance below 3 dB across the scanning range. The proposed antenna and methodology effectively broaden the beam scanning angle of circularly polarized slotted waveguide array antennas.

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Section: Introductionmentioning

confidence: 99%

A Circularly Polarized Non-Resonant Slotted Waveguide Antenna Array for Wide-Angle Scanning

Han,

Liu

2024

Sensors

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“…The transverse slot array (TSA) and the longitudinal slot array (LSA) are interlaced together to construct dual-polarized antenna arrays 11 and dual-band dual-polarized (DBDP) antenna arrays. [12][13][14][15] However, the full-metal structure often causes the high cost and huge size. Substrateintegrated waveguide (SIW) technology features low cost, low profile and easy integration.…”

Section: Introductionmentioning

confidence: 99%

“…Waveguide slot antenna arrays have been studied and used in the shared‐aperture antenna design for their compact structures and high aperture efficiency. The transverse slot array (TSA) and the longitudinal slot array (LSA) are interlaced together to construct dual‐polarized antenna arrays 11 and dual‐band dual‐polarized (DBDP) antenna arrays 12–15 . However, the full‐metal structure often causes the high cost and huge size.…”

Section: Introductionmentioning

confidence: 99%

A dual‐band dual‐polarized shared‐aperture SIW slot antenna array with beam scanning

Wei

Yang

Lou

et al. 2023

Micro & Optical Tech Letters

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This letter proposes a low‐profile dual‐band dual‐polarized (DBDP) substrate‐integrated waveguide (SIW) slot antenna array with beam scanning. By stacking the SIW transverse slot array (TSA) above the longitudinal slot array (LSA) in one aperture, two orthogonal polarizations are generated at two bands. To avoid the radiation slots of the LSA and the TSA from overlapping, the LSA is developed based on the proposed LSA unit whose collinear‐slot arrangement is realized by introducing metallized vias. Two planar parabolic reflectors based linear source generators (LSGs) are integrated to feed the shared‐aperture radiation array. By moving two independent SIW horns, the proposed antenna can obtain the steering angles of ±34° and ±27° at the central frequencies of 11.2 and 13 GHz, respectively. Two beams with orthogonal polarizations scan in the same plane. The simulated results have been validated by the experimental ones. The proposed antenna has low profile and is a potential candidate for satellite and wireless communications.

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“…Moreover, it is shown that using a ridge inside the waveguide causes a better radiation pattern where low level of sidelobes is desired. Hence, the 1-D slot array antenna based on ridged waveguide has attracted a lot of attention in recent years [17][18][19][20][21][22]. In 2-D type, however, there has not been any literature, and thus, the 2-D type design is deprived of the proposed attractive features.…”

Section: Introductionmentioning

confidence: 99%

Low Sidelobe Level Pattern Synthesis of 2-D Slot Array Antenna Based on Ridged Waveguide

Sadeghzadeh

Mallahzadeh

Dadashzadeh

2023

International Journal of RF and Microwave Computer-Aided Engine

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Slotted waveguide antennas have received much attention due to features such as low loss, high efficiency, and high power capacity. In this article, a 2-D slot array antenna based on a ridged waveguide with a low level of side lobe is synthesized. The antenna consists of four slotted ridged waveguides, each of which consists of eight slots as the radiating elements. A fast and easy way is proposed to synthesize the aperture distribution in the H-plane. Further, a corporate feed network based on ridged waveguide is designed to feed the antenna. The feed network is designed such that the desired aperture distribution in the E-plane is achieved. A prototype of the antenna is fabricated and measured. The measured sidelobe levels in the H- and E-planes are, respectively, -24.5 dB and -23.9 dB, and the reflection coefficient of the antenna is -19 dB at the design frequency, indicating the accuracy of the design procedure. The measured antenna gain is approximately 20.4 dBi at the entire frequency band. The stable radiation pattern of the antenna makes the antenna suitable for radar applications.

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Design of a Dual-Polarization Single-Ridged Waveguide Slot Array With Enhanced Bandwidth

Cited by 12 publications

References 11 publications

A Circularly Polarized Non-Resonant Slotted Waveguide Antenna Array for Wide-Angle Scanning

A Circularly Polarized Non-Resonant Slotted Waveguide Antenna Array for Wide-Angle Scanning

A dual‐band dual‐polarized shared‐aperture SIW slot antenna array with beam scanning

Low Sidelobe Level Pattern Synthesis of 2-D Slot Array Antenna Based on Ridged Waveguide

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