A wideband high-gain high-selectivity filtering antenna with two adjustable radiation nulls

La, Dong‐Sheng; Zhao, Jiahui; Líu, Hao; Zhang, Chao; Qu, Meijun; Guo, Jingwei

doi:10.1016/j.aeue.2021.154010

Cited by 13 publications

(8 citation statements)

References 24 publications

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“…4,5 Obviously, the additional introduction of filtering function would increase the structure complexity of the antenna. Thus, various approaches are studied to solve this issue, such as integrating filters in the feeding network of antennas, 6,7 loading parasitic elements, [8][9][10] or using stacked structures with cross-coupling. 11 Among these investigations, the cavity-backed filtering antennas are one of the most popular candidates for filtering antenna design, due to its attractive properties like high radiation efficiency and high gain.…”

Section: Introductionmentioning

confidence: 99%

Compact metal‐printed filtering antenna with wideband performance

Xu,

et al. 2024

Micro & Optical Tech Letters

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In this letter, a wideband cavity‐backed filtering antenna based on 3‐D printing technology is proposed for millimeter wave applications. This antenna is made up of an air‐filled metal cavity, attached with two transverse slots on its upper surface. By exciting one TE110 cavity mode and two slot modes simultaneously, wideband performance can be obtained. Besides, by properly bending one slot into U‐shape, two radiation nulls appear at two sides of the passband, yet causing the increase of the cross‐polarization in H‐plane. To remedy this, the U‐shaped slot is further bent at its ends, successfully suppressing the cross‐polarization by 7 dB. The final proposed filtering antenna is implemented and measured, showing a wide bandwidth of 37.3%, covering from 21.4 to 31.2 GHz. And the measured maximum gain is 6.6 dBi in band, with two radiation nulls at 14.6 and 40 GHz.

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Section: Introductionmentioning

confidence: 99%

Compact metal‐printed filtering antenna with wideband performance

Xu,

et al. 2024

Micro & Optical Tech Letters

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“…Microstrip patch antennas has drawn broad interests for 5G communications due to its superior advantages of low profile, low cost, easy fabrication, compatible with integrated circuits, and so on. Considering the serious mismatch of patch antennas, a series of methods have been proposed to broaden the bandwidth, such as thick substrate with low permittivity, stacked patches, slot etching, and so on 1–3 …”

Section: Introductionmentioning

confidence: 99%

“…Considering the serious mismatch of patch antennas, a series of methods have been proposed to broaden the bandwidth, such as thick substrate with low permittivity, stacked patches, slot etching, and so on. [1][2][3] Since characteristic mode analysis (CMA) could provide physical insight of the operating mechanisms of metasurface antennas, CMA-based MAs sprung up in recent years. A low-profile wideband metasurface antenna was proposed in Lin and Chen.…”

Section: Introductionmentioning

confidence: 99%

Radiation performance improvement for wideband patch antenna by using characteristic mode analysis

Cao

Cai

et al. 2023

Micro & Optical Tech Letters

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A novel method is proposed to achieve radiation performance improvement for patch antennas by using characteristic mode analysis (CMA). In our previous work, a microstrip patch antenna composed of a driven patch and parasitic square patches was presented to realize wideband performance. To improve the radiation performance, the parasitic patches are replaced with split ring resonators (SRRs). Compared with the previous antenna, the unwanted higher‐order modes of the proposed antenna are effectively suppressed based on the simulated results of CMA, leading to good radiation performance. Meanwhile, wideband performance is maintained as well. Simulated results indicate that these two antennas share similar wide bandwidth more than 30%. However, the gains at the higher resonant frequency for these two antennas are 10.8 and 11.75 dBi, respectively. Finally, measured results show that the bandwidth of SRR loaded antenna is from 10.5 to 15.3 GHz, and the gain varies from 8 to 11.5 dBi across the operating bandwidth.

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“…There are many ways to generate RNs, such as the open stub, 11,12 near-zeroindex metamaterial, 13 silver-coated slots, 14 and slots with special shape. 15,16 The above references focus on the directional filtering antenna design, while the omnidirectional filtering DRA is rarely reported. 4,17 The filtering DRA proposed in Reference4 successfully introduces RNs at the lower and upper sidebands by using shorting pins with different lengths.…”

Section: Introductionmentioning

confidence: 99%

“…By generating the radiation nulls (RNs) at the sidebands of the filtering antenna, a steep roll‐off rate can be obtained. There are many ways to generate RNs, such as the open stub, 11,12 near‐zero‐index metamaterial, 13 silver‐coated slots, 14 and slots with special shape 15,16 . The above references focus on the directional filtering antenna design, while the omnidirectional filtering DRA is rarely reported 4,17 .…”

Section: Introductionmentioning

confidence: 99%

An omnidirectional filtering dielectric resonator antenna based on metal patches

Zhang

et al. 2022

Int J RF Mic Comp-Aid Eng

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A novel filtering dielectric resonator (DR) antenna (DRA) is designed in this article. By using a single-layer planar feed structure, the TM 01δ and TM 011+δ modes of a cylindrical DR are excited. The proposed filtering DRA achieves a good omnidirectional radiation performance and a flat gain response. By loading a crossed patch with four shorting pins on the feed structure, the lower edge of the passband obtains a steep roll-off rate. By plating four metal patches on the side wall of the DR, a radiation null (RN) is successfully introduced at the upper sideband of the DRA. The suppression levels of the proposed filtering DRA in the lower and upper stopbands are above 18 dB. Therefore, the proposed filtering DRA achieves filtering function without additional circuits. For demonstration, a prototype DRA is fabricated and measured. The simulated and measured results are basically consistent.

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A wideband high-gain high-selectivity filtering antenna with two adjustable radiation nulls

Cited by 13 publications

References 24 publications

Compact metal‐printed filtering antenna with wideband performance

Compact metal‐printed filtering antenna with wideband performance

Radiation performance improvement for wideband patch antenna by using characteristic mode analysis

An omnidirectional filtering dielectric resonator antenna based on metal patches

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