Reconfigurable bow tie‐based filtering antenna for cognitive radio applications

Potti, Devisowjanya; Balaji, Pranamika; Alsath, M. Gulam Nabi; Savarimuthu, Kirubaveni; Selvam, Udayaezhil; Valavan, Nilavathani

doi:10.1002/mmce.22208

Cited by 8 publications

(10 citation statements)

References 15 publications

(33 reference statements)

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“…The reconfigurable filtering antenna is a combined structure of a reconfigurable filter with the antenna. The reconfigurable filtering antenna was extensively explored 48,59 covering various aspects, including reconfigurability of frequency, bandwidth, and polarization.…”

Section: Reconfigurable Filtering Antennamentioning

confidence: 99%

“…In this structure, by varying the state of diodes incorporated in the antenna, the whole arrangement starts F I G U R E 4 0 Prototype of bandwidth reconfigurable filtering antenna 53 to work as a filtenna, and operates over the frequency band from 1.8 to 2.8 GHz. Similarly, Devi Sowjanya Potti et al designed a bow tie-based reconfigurable filtering antenna with four operating states for cognitive radio applications, 59 which is operated at 3.5 GHz, 5.5 GHz UWB applications independently. The filtering antenna structure is a combined structure of the UWB bow-tie antenna with UWB reconfigurable BPF.…”

Section: Reconfigurable Filtering Antennamentioning

confidence: 99%

See 1 more Smart Citation

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: Reconfigurable Filtering Antennamentioning

confidence: 99%

Section: Reconfigurable Filtering Antennamentioning

confidence: 99%

Filtering antennas: A technical review

Gangwar¹,

Alam

Rajpoot³

et al. 2021

Int J RF Microw Comput Aided Eng

View full text Add to dashboard Cite

show abstract

“…In the first case, the proposed filtering antenna frequency and pattern characteristics are approximated by orienting the configuration horizontal to the metal sheet used in. 13,17 Moreover, the filtering antenna is placed 5 cm away from the metal sheet as describes in Figure 21A. In the second case, the housing effect metal sheet (XZ) is placed 5 cm below the vertically oriented proposed filtering antenna to approximate the vehicle roof effect as illustrated in Figure 21B.…”

Section: Design Of Super Wideband Monopole Antennamentioning

confidence: 99%

“…The plastic or non‐conducting medium housing effects are assumed to be negligible and ignored in this study. In the first case, the proposed filtering antenna frequency and pattern characteristics are approximated by orienting the configuration horizontal to the metal sheet used in 13,17 . Moreover, the filtering antenna is placed 5 cm away from the metal sheet as describes in Figure 21A.…”

Section: Lowpass Filtering Antenna Housing Effectsmentioning

confidence: 99%

“…11 A capacitively loaded loop resonator-based bandpass filter is added on the feedline of the omnidirectional filtering antenna is reported in Reference 12. A switchable statebased third-order hairpin band-pass filter with the UWB antenna is used 13 to suppress interference in the WLAN band. In the above discussed designs, the radiator's feeder line width and feed loss gets increased due to the filters loading on the feedline.…”

Section: Introductionmentioning

confidence: 99%

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Design of a compact printed lowpass filtering antenna with wideband harmonic suppression for automotive communication

Ramanujam

Chandrasekar

et al. 2020

Int J RF Microw Comput Aided Eng

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This article presents a printed planar lowpass filtering monopole antenna with wide stopband for automotive communications. This monopole radiator exhibits hybrid geometry and is constructed using a circular slot and corner edged slot. The fundamental radiator's ground plane is defected to enhance the VSWR bandwidth and four rectangular patches with two open-circuit stubs is being used to construct a lowpass filter with wide stopband. The filtering characteristics are further improved by incorporating circular complementary splitring resonator (CCSRR) on the ground plane. The proposed lowpass filtering antenna is obtained by integrating the lowpass filter with a super wideband (SWB) monopole antenna and experimentally validated with the measured reflection coefficient as <−10 dB in 0.67 to 4.15 GHz (69.25%). In this operating spectrum, the radiation pattern characteristics of the filtering antenna is identically stable and the passband average gain is >4.45 dBi. Further, the prototype filtering antenna bandwidth and radiation characteristics are analyzed in housing effects. The filtering antenna can be conveniently printed along with the existing printed circuit board or it can be located inside the shark fin housing thereby eliminating the need for a dedicated location in vehicular communications.

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A reconfigurable integrated 4‐port UWB and NB antenna system for cognitive radio application

Nella

Vattiprolu

Saha

et al. 2021

Int J RF Mic Comp-Aid Eng

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A frequency reconfigurable 4‐port integrated ultra‐wideband and narrowband antenna structure for cognitive radio application is reported in this article. The proposed structure comprises four distinct antennas integrated on FR‐4 substrate of dimensions 42 × 42 × 1.6 mm. The first antenna, named as ANT‐1, is a CPW fed UWB antenna exhibiting −10 dB impedance bandwidth from 3 to 11 GHz, which includes the FCC unlicensed band ranging from 3.1 to 10.6 GHz. The remaining three antennas, named as ANT‐2, ANT‐3, and ANT‐4, respectively, are frequency reconfigurable narrowband antennas. Each narrowband antenna is incorporated with a varactor diode to obtain a fine frequency tuning. The first narrowband antenna (ANT‐2) covers a mid‐frequency band from 5.35 to 8.2 GHz. The second narrowband antenna (ANT‐3) attains a lower‐band from 3.1 to 5.375 GHz while the third narrowband antenna (ANT‐4) achieves an upper band ranging from 8 to 10.8 GHz. Simulated transmission coefficients are less than −16 dB between the antennas. ANT‐1, 2, 3, and 4 accomplish simulated maximum peak gains of 4.92, 3.4, 2.9, and 3.2 dBi, respectively. The proposed structure is fabricated to validate the simulation results. The measured reflection and transmission coefficient results are analyzed with the simulation results revealing a good matching.

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Reconfigurable bow tie‐based filtering antenna for cognitive radio applications

Cited by 8 publications

References 15 publications

Filtering antennas: A technical review

Filtering antennas: A technical review

Design of a compact printed lowpass filtering antenna with wideband harmonic suppression for automotive communication

A reconfigurable integrated 4‐port UWB and NB antenna system for cognitive radio application

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