Compact
            <scp>dual‐mode</scp>
            wideband
            <scp>MIMO</scp>
            filtering antenna array with high selectivity and improved isolation

Tao, Fengbo; Wu, Bian; Xu, Mingming; Chen, Jianzhong; Su, Tao

doi:10.1002/mmce.22497

Cited by 8 publications

(7 citation statements)

References 14 publications

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“…There are several MIMO filtering antennas reported in the literature. [42][43][44][45][46][47] In 2016 Hu Taotao et al 42 designed a MIMO filter antenna utilizing the coupled transmission line resonant structure for RF front end-system (see Figure 27). This MIMO filtenna uses slot and decoupling tree structure in the ground plane for achieving 15.0 dB isolation and resonated @2.5 GHz.…”

Section: Mimo Filtering Antennamentioning

confidence: 99%

“…Further, in 2020, Feng Tao et al designed a MIMO dual-band filtering antenna array for MIMO communication systems. 47 The filtenna is a combined structure of radiating patch on the top layer with the filter realized at the bottom plane, which is coupled through the rectangular slot in the middle of the ground plane. The MIMO filtering antenna operates @2.45 GHz resonance frequency with 24.5% bandwidth and achieved 4.5 dBi gain at the resonance frequency.…”

Section: Mimo Filtering Antennamentioning

confidence: 99%

“…stub46 (1.1-6.0 GHz) and(3.4-4.0 GHz)WiMAX and advanced wireless systemsRadiating patch with the filter at bottom and a rectangular slot47 2.45 GHz (24.5%) MIMO communication system (Continues)…”

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confidence: 99%

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Filtering antennas: A technical review

Gangwar¹,

Alam

Rajpoot³

et al. 2021

Int J RF Microw Comput Aided Eng

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Filtering antennas or filtennas realize both antennas and filter functions in a single structure with the sole purpose of reducing losses and size in the design of a radio system. This article presents a comprehensive view of various filtennas design techniques and their types, satisfying the requirements of different wireless communication standards. The codesign and synthesis approaches and multilayer structure, slot/slit, and parasitic elements are the frequently used techniques reported in the literature to date for the filtennas design. The codesign and synthesis approaches need an extra filter in the filtenna's design, thus making it more complex. Whereas multilayer, slot, and parasitic elements do not require additional filters, and help the radio design become compact in size. The individual elements, that is, filter and antenna used in the filtenna are designed by cutting slots, stacking, resonators, or metamaterial structures.There are two broad categories of filtennas, namely, planar and nonplanar. Most of the papers covered in this article are planar, whereas, under the non-

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Section: Mimo Filtering Antennamentioning

confidence: 99%

Section: Mimo Filtering Antennamentioning

confidence: 99%

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Filtering antennas: A technical review

Gangwar¹,

Alam

Rajpoot³

et al. 2021

Int J RF Microw Comput Aided Eng

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“…Wideband antennas have been widely applied in various fields. With the rapid demands of increased functionality of wireless communication, detection and reconnaissance, these antennas appeared in different application systems, [1][2][3][4][5][6][7][8][9][10] therefore a great diversity of wideband antennas have been proposed. However, for some special applications, a lot of research and work is still needed.…”

Section: Introductionmentioning

confidence: 99%

Wideband tightly‐coupled dual‐line polarized P‐band antenna array with low‐profile lightweight metal structure

Sun

Wang

et al. 2021

Int J RF Mic Comp-Aid Eng

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In this article, an all-metal structure antenna array is proposed. The novel hollow-out structures are designed to achieve low profile and lightweight. The top structure of the element is also tightly coupled, once again lowering the antenna array profile. The overall size of the array is 1354.0 Â 1354.0 mm 2 , the spacing between elements is 323.0 mm. The optimized array-structure profile is only 0.12 λ 0 (λ 0 corresponds to the wavelength of 0.4 GHz). In addition, an excellent dual-line polarization radiation is achieved by using a crossstaggered arrangement. Both polarizations of the array have a cross-polarization-level of smaller than À30 dB. In order to verify the feasibility of the scheme, prototype processing and testing are carried out, and the test results are consistent with the simulation results. The frequency band covers the P-band (0.4-0.7 GHz). The active voltage standing wave ratios (VSWRs) are less than 2.0. In addition, the antenna array has favorable radiation characteristics.The measured realized gain varies from 14.7 to 19.6 dBi over the work band. The total antenna efficiency is higher than 83%. It can be applied to phased arrays for the satellite system and other broadband lightweight metal antennas.

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“…As a kind of frequency‐reconfigurable antenna, bandwidth (BW)‐reconfigurable antennas can provide more BWs, compact device sizes, reduce interference, and significantly improve data transmission efficiency to heighten functionality 9–11 . On the other hand, filtering antenna is a new concept that could realize radiation and filtering functions simultaneously, which can eliminate the matching network and interconnection, and then miniaturize the RF front ends effectively 12–20 . As a combination of the advantages of BW‐reconfigurable antennas and filtering antennas, the concept of BW‐reconfigurable filtering antenna has been proposed 21,22 and then becomes a hot research topic.…”

Section: Introductionmentioning

confidence: 99%

Bandwidth‐reconfigurable filtering microstrip patch antenna using contactless varactor‐loading scheme

Chen

Zhang

Wang

et al. 2021

Int J RF Microw Comput Aided Eng

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A bandwidth (BW)‐reconfigurable filtering microstrip patch (MP) antenna is investigated in this paper. Two pairs of slots with different lengths are etched on the patch to not only bring two radiation nulls for good filtering performance but also generate additional high resonant mode for extending the operating BW of the antenna. A contactless varactor‐loaded microstrip line embedded in the middle layer of the two stacked substrates of the MP antenna is constructed as a tuning structure so that the MP mode and the lower radiation null can be adjusted simultaneously. As a result, the fractional BW (FBW) of the filtering antenna can be reconfigured with a BW agility of 55.3% while the high selectivity is maintained. For demonstration, a prototype is implemented and tested. The simulated and measured results with good agreement are presented.

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Compact dual‐mode wideband MIMO filtering antenna array with high selectivity and improved isolation

Cited by 8 publications

References 14 publications

Filtering antennas: A technical review

Filtering antennas: A technical review

Wideband tightly‐coupled dual‐line polarized P‐band antenna array with low‐profile lightweight metal structure

Bandwidth‐reconfigurable filtering microstrip patch antenna using contactless varactor‐loading scheme

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