Broadband Dual-Polarized Waveguide Slot Filtenna Array With Low Cross Polarization and High Efficiency

Lu, Jiaguo; Zhang, Hongtao; Wang, Wei; Liang, Xianling; Ge, Jian; Jin, Mouping; Wu, Wenyu

doi:10.1109/tap.2018.2876174

Cited by 40 publications

(17 citation statements)

References 17 publications

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“…waveguide channels for power transmission, i.e., the rectangles marked with purple-and green-color lines respectively as shown in Fig. 1(b), are further reduced compared with those of [14]. Furthermore, there is a metallic cavity placed under the C-band antenna to serve as the L-band waveguide channel, as depicted in the polygon marked with red-color dashed line in Fig.…”

Section: Structure Of the Proposed Antennamentioning

confidence: 99%

“…), and one L-band linear slotted waveguide antenna. The C-band dual-polarized antenna is developed from an X-band dual-polarized waveguide slot filtering antenna array featuring in low cross-polarization and high-efficiency [14]. Particularly, the C-band V-Pol.…”

Section: Structure Of the Proposed Antennamentioning

confidence: 99%

“…As mentioned, the C-band dual-polarized antenna subarray is referenced from the authors' previous work about an X-band dual-polarized array reported in [14]. Apart from the working frequency changed, one more difference is the feeding structure that the complicated multilayer power-distribution feeding network is not necessary, therefore the H-Pol.…”

Section: A C-band Dual-polarized Antenna Subarraymentioning

confidence: 99%

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Dual-Band Dual-Polarized Waveguide Slot Antenna for SAR Applications

Chen

Fang

Wang

et al. 2020

Antennas Wirel. Propag. Lett.

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The design of a shared-aperture waveguide slot antenna operating in dual-band and dual-polarization (DBDP) is proposed in this paper for synthesis aperture radar (SAR) applications. The frequencies of the antenna are in both L-and C-band with frequency ratio of 4:1. The C-band horizontalpolarized subarray antenna is achieved by 16 V-shaped slots opened on a ridged waveguide, while the vertical-polarized subarray is realized by 16 longitudinal slots displaced from the centerline on the other ridged waveguide. The L-band vertical-polarized subarray is comprised by four groups of longitudinal slots cut in the metal-wall interlacing with the C-band dual-polarized antenna array sharing the same aperture. The L-band waveguide is a multi-ridge cavity under the C-band waveguide. A DBDP antenna module comprising 4×16 C-band dual-polarized elements and 1×4 L-band elements was manufactured in aluminum alloy. Experimental results show that the proposed antenna can obtain excellent electromagnetic performance and maintain satisfactory thermal and mechanical properties for space-borne SAR applications.

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Section: Structure Of the Proposed Antennamentioning

confidence: 99%

Section: Structure Of the Proposed Antennamentioning

confidence: 99%

Section: A C-band Dual-polarized Antenna Subarraymentioning

confidence: 99%

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Dual-Band Dual-Polarized Waveguide Slot Antenna for SAR Applications

Chen

Fang

Wang

et al. 2020

Antennas Wirel. Propag. Lett.

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“…For some terrestrial and satellite communication systems, the antenna array is also required to have high integration so as to reduce the size, cost and weight of the wireless system. In general, a dual-polarized planar antenna array can be realized with inter-digital or separate orthogonally-polarized linear antenna arrays, as reported in [11]- [13]. However, these antennas have large size and suffer low cross polarization discrimination (XPD).…”

Section: Introductionmentioning

confidence: 99%

A Dual-Polarized Planar Antenna Array Differentially-Fed by Orthomode Transducer

Yang

Gao

Luo

et al. 2021

IEEE Trans. Antennas Propagat.

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This paper presents a new design of a differentiallyfed substrate integrated planar antenna array with dualpolarization. Compared with the traditional dual-polarized antenna arrays, the proposed array antenna has the advantages of simple configuration, high cross-polarization discrimination (XPD) and high gain. 2 × 2-element subarray design with a vialoaded crossover structure is used, which reduces the complexity of the array antenna. The operation bandwidth is improved by generating three resonances in the subarray. An 8 × 8 antenna array is designed, prototyped and tested to exemplify its potential applications in large dual-polarized antenna arrays. A planar orthomode transducer is used to achieve differential excitation for the antenna array. The measured results show that the proposed antenna array has an impedance bandwidth of 19.2-20.7 GHz for |S 11 | < −10 dB and port isolation higher than 20 dB. The array antenna exhibits a high XPD of 43 dB and a flat gain about 22.2 dBi within the bandwidth.

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“…Meanwhile, the electromagnetic compatibility (EMC) becomes a prominent problem as the SAR system crowded into a congested space with other systems, such as data transmission, navigation, and telemetry et al The filtering antenna is a good candidate for the front-end of the system. The filter can be integrated into the feed line of an antenna array [8][9][10]. For an antenna element, many designers choose to use the unintegrated structures, which means using antenna itself as the filter which can avoid the use of extra filtering structures and reduce the impedance mismatching [11][12][13][14].…”

mentioning

confidence: 99%

A Wideband Low-Profile All-Metal Cavity Slot Antenna With Filtering Performance for Space-Borne SAR Applications

Fang

Wang

Huang

et al. 2019

Antennas Wirel. Propag. Lett.

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This letter presents a wideband All-metal cavity slot antenna for space-borne SAR applications which achieves the filtering performance simultaneously. The proposed antenna consists of a metal cavity and several radiation slots. It was fabricated by aluminium through milling and welding process which is suitable for the space environment. Benefiting from multi resonances of the cavity and slots, the antenna obtains a wide bandwidth. An 8x12 antenna array is designed, fabricated and measured for verification. The measured impedance bandwidth of 51% from 7.2GHz to 12.2GHz for S11<-10dB is achieved. Furthermore, it shows good filtering performance of more than 20dB suppression level in the out-band comparing to the operating band which suppresses the unwanted interferences and contributes to the good EMC design. The cavity has a very low profile of 2.8mm, i.e. 0.067λ at the lowest operating frequency.

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Broadband Dual-Polarized Waveguide Slot Filtenna Array With Low Cross Polarization and High Efficiency

Cited by 40 publications

References 17 publications

Dual-Band Dual-Polarized Waveguide Slot Antenna for SAR Applications

Dual-Band Dual-Polarized Waveguide Slot Antenna for SAR Applications

A Dual-Polarized Planar Antenna Array Differentially-Fed by Orthomode Transducer

A Wideband Low-Profile All-Metal Cavity Slot Antenna With Filtering Performance for Space-Borne SAR Applications

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