Coplanar waveguide‐based ultra‐wide band antenna with switchable filtering of WiMAX 3.5 GHz and WLAN 5 GHz signals

Medkour, Hicham; Cheniti, Mohamed; Narbudowicz, Adam; Das, Sudipta; Vandelle, Erika; Vuong, Tan Phu

doi:10.1002/mop.32321

Cited by 20 publications

(10 citation statements)

References 21 publications

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“…In [157], the authors present a design of a band-notched UWB reconfigurable antenna which is achieved using varactor diodes placed between the split ring slots of the CSSRs used for notching. Finally, in [158], reconfiguration is achieved in the UWB notched antenna using biasing circuits of capacitors and inductors and PIN diodes for switching. Table 4 highlights the key features of the reconfigurable antennas presented above, along with the reasons for their reconfigurability.…”

Section: Frequency Reconfigurable Antennasmentioning

confidence: 99%

Ultrawideband Antennas: Growth and Evolution

Kumar

Ali

et al. 2021

Micromachines

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Narrowband antennas fail to radiate short pulses of nano- or picosecond length over the broader band of frequencies. Therefore, Ultrawideband (UWB) technology has gained momentum over the past couple of years as it utilizes a wide range of frequencies, typically between 3.1–10.6 GHz. UWB antennas have been utilized for various applications such as ground-penetrating radars, disaster management through detection of unexploded mines, medical diagnostics, and commercial applications ranging from USB dongles to detection of cracks in highways and bridges. In the first section of the manuscript, UWB technology is detailed with its importance for future wireless communications systems. In the next section various types of UWB antennas and their design methodology are reviewed, and their important characteristics are highlighted. In section four the concept of a UWB notch antenna is presented. Here various methods to obtain the notch, such as slots, parasitic resonators, metamaterials, and filters are discussed in detail. In addition, various types of important notch antenna design with their technical specifications, advantages, and disadvantages are presented. Finally, the need of reconfigurable UWB notch antennas is discussed in the next section. Here various insight to the design of frequency reconfigurable notch antennas is discussed and presented. Overall, this article aims to showcase the beginnings of UWB technology, the reason for the emergence of notching in specific frequency bands, and ultimately the need for reconfiguring UWB antennas along with their usage.

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Section: Frequency Reconfigurable Antennasmentioning

confidence: 99%

Ultrawideband Antennas: Growth and Evolution

Kumar

Ali

et al. 2021

Micromachines

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“…In ref [23], tuning the center of the notch band is achieved by inserting one PIN diode in the split ring resonator of the S-letter shape patch, where it occurred at 3.25 GHz when the diode is ON and shift to 5.5 GHz in the OFF state. A UWB antenna that operates in the range 3 -10.6 GHz is proposed in [24], with two PIN diodes are placed in the patch slots to reject the WiMAX 3.3 -3.7 GHz and 5 -5.30 GHz WLAN applications according to the diode states. Moreover, after placing the two diodes in the microstrip lines that were etched parallel to the ladder shape slot and adjusting their position had adjusted the current path which affected the location of the notch center frequency in the range 3.3 -5.5 GHz [25].…”

Section: Introductionmentioning

confidence: 99%

Compact Super Wideband Frequency Diversity Hexagonal Shaped Monopole Antenna With Switchable Rejection Band

et al. 2022

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To reduce interference from other wireless communications, a smaller super wideband frequency diversity hexagonal monopole antenna with switchable rejection band capabilities is proposed. The patch has the shape of hexagonal with an open-ended horizontal slot that divides the patch into upper and lower parts. The notch switchable features and the frequency diversity are controlled by changing the length of the resonator through alternating the state of two inserted parallel PIN diodes inside the horizontal openended slot. The upper part of the hexagonal patch is connected to the negative terminal of the diodes and the biasing circuit in the bottom layer through a conducting pin while the lower part is connected to the positive terminal of the diode. When both diodes are OFF the antenna works as a super wideband covering a bandwidth that starts at 3.37 and ends at 27.71 GHz. When both diodes are ON, a frequency band 3.81 -6.62 GHz is filtered, and a band notch has appeared. The antenna's radiation pattern is broadsided directional, and the efficiency reached 92.9 % and 96 % for the ON and OFF cases respectively. The reflection coefficient (S11) at the rejection reaches -3.06 dB at 5.38 GHz. The suggested design's overall size is 36 mm × 36 mm × 1.6 mm on an FR-4 substrate material with a loss tangent of 𝑡𝑎𝑛𝛿 = 0.02. Hence, the proposed super wideband antenna is well-suited for applications in wireless communications.

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“…To overcome this interference problem, the UWB antennas with band-notch characteristics are desirable. For achieving notch characteristics with UWB elements, several techniques have been reported in the literature [4][5][6][7][8][9][10]. The commonly used methods are based on etching slots on the radiating surface and/or in the ground plane [4][5][6][7], adding a parasitic element(s) near the radiating element, etc.…”

Section: Introductionmentioning

confidence: 99%

Uwb Monopole Antenna With Dual Notched Bands Verified by Characteristic Mode Analysis (Cma)

Grandhi Venkata,

Kalva

2022

PIER C

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An ultra-wideband (UWB) antenna with dual band notched characteristics verified by characteristic mode analysis (CMA) is presented. The intended UWB radiator is etched on a Rogers RT5880 substrate with a size of 29 × 35 × 0.764 mm 3 , operating over a spectrum of 2.66-14.86 GHz with a fractional bandwidth (FBW) of 139%. Dual notched bands at WiMAX (3.01-3.63 GHz) and WLAN (4.48-5.85 GHz) are achieved by embedding L-shaped stubs in the notched rectangular patch. In addition, the two notched bands of the reported antenna are verified by using characteristic mode analysis (CMA) in terms of modal significance (MS) and characteristic angle (CA). The reported antenna's simulated and tested results are well matched to obtain S 11 , VSWR, stable radiation patterns, a stable peak gain of 2.65 to 3.6 dBi, and the maximum radiation efficiency of 97.86% in frequency domain, which make the intended radiator suitable for portable UWB applications.

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Coplanar waveguide‐based ultra‐wide band antenna with switchable filtering of WiMAX 3.5 GHz and WLAN 5 GHz signals

Cited by 20 publications

References 21 publications

Ultrawideband Antennas: Growth and Evolution

Ultrawideband Antennas: Growth and Evolution

Compact Super Wideband Frequency Diversity Hexagonal Shaped Monopole Antenna With Switchable Rejection Band

Uwb Monopole Antenna With Dual Notched Bands Verified by Characteristic Mode Analysis (Cma)

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