A compact fractal UWB antenna with reconfigurable band notch functions

Tripathi, Shrivishal; Mohan, Akhilesh; Yadav, Sandeep

doi:10.1002/mop.29609

Cited by 15 publications

(9 citation statements)

References 13 publications

(21 reference statements)

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“…U-slot in feed and H-slot in radiating patch [9,10] cause band rejection characteristics. A Sierpinski fractal based UWB antenna is discussed in [11]. C-shaped slots and Single Split Ring Resonators (SSRR) are used to achieve band notch characteristics.…”

Section: Introductionmentioning

confidence: 99%

Design and Analysis of a Compact Reconfigurable Dual Band Notched Uwb Antenna

Mayuri¹,

Rani²,

Subrahmanyam³

et al. 2020

PIER C

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In this paper, a dual notch Ultra Wideband (UWB) monopole antenna with compact dimensions of 37.8 × 27.1 × 1.6 mm 3 is presented. Octagon patch with a defected ground structure is used to attain the wide frequency range of 3.17 GHz-11.61 GHz with ultra-wide impedance bandwidth of 8.33 GHz. The band notch characteristics in WiMAX (3.2 GHz-3.67 GHz) and WLAN (4.32 GHz-5.81 GHz) bands are achieved using inverted pi-slot in the radiating element and a pair of double split ring resonators (DSRRs) on either sides of the feed, respectively. Reconfigurability in the bands is obtained by using BAR64-03W pin diodes switching at the appropriate placement in the antenna structure. The proposed antenna exhibits efficiency of 88% in operating and 20% in nonoperating frequencies. The proposed antenna is designed, simulated, and optimized using HFSS 19 electromagnetic tool. The measured results are tested using combinational analyzer in a chamber with antenna measurement setup for validation and found in good matching with simulation.

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Section: Introductionmentioning

confidence: 99%

Design and Analysis of a Compact Reconfigurable Dual Band Notched Uwb Antenna

Mayuri¹,

Rani²,

Subrahmanyam³

et al. 2020

PIER C

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“…Therefore, the proposed reconfigurable fractal UWB antenna time‐domain characteristics are performed in terms of fidelity factor. It is used to calculate the expected amount of distortion introduced in the transmitted signal by the proposed antenna and expressed as:

ρ = max_{τ} true{false| \frac{\int S true(t true) R true(t - τ true) d t}{\sqrt{\int S^{2} true(t true) d t} \sqrt{R^{2} (t) d t}} false| true}

where

τ

is delay, S ( t ) shows the source pulse, and R ( t ) represents the received pulse. The similarity between the signals at the source and at the receiver is evaluated using cross correlation, then its maximum is estimated.…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, the proposed reconfigurable fractal UWB antenna time-domain characteristics are performed in terms of fidelity factor. It is used to calculate the expected amount of distortion introduced in the transmitted signal by the proposed antenna and expressed as 19 :…”

Section: Time-domain Analysismentioning

confidence: 99%

A compact frequency‐reconfigurable fractal UWB antenna using reconfigurable ground plane

Tripathi¹,

Mohan

Yadav

2017

Micro & Optical Tech Letters

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In this article, a compact frequency reconfigurable ultrawideband (UWB) antenna having switchable multiple bands is presented. The reconfigurable multiple bands include UWB band, lower UWB band, middle UWB band, and one dual band having lower and upper UWB bands. Multiple p‐i‐n diodes are used in the slotted ground plane which helps to achieve frequency reconfigurability. The desired compactness and wider operational bandwidth is obtained in the antenna design with the help of Sierpinski fractal geometry. Moreover, it helps in enhancement of the radiation characteristics that assist us to get omnidirectional radiation pattern. It has a compact size of 24.5 mm × 20 mm.

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“…Some applications do not accept any amount of interference, so the UWB antenna of the underlay systems should have the capability of band notch generation to completely eliminate the interference with these critical applications. Like the conventional frequency reconfiguration, the reconfiguration of the antenna band notch may be accomplished with the aid of radio frequency (RF) switches such as PIN diodes [3], MEMS switches [4], and photoconductive switches [5]. In addition, the band notch center frequency can be tuned by attaching a varactor diode to the designed antenna [6].…”

Section: Introductionmentioning

confidence: 99%

A compact wide-slot UWB antenna with reconfigurable and sharp dual-band notches for underlay cognitive radio applications

Alnahwi¹,

Abdalhameed²,

Swadi³

et al. 2019

Turk J Elec Eng & Comp Sci

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This paper presents a compact wide-slot ultrawide-band (UWB) antenna with reconfigurable and sharp dual-band notches compatible with the underlay cognitive radio systems. The antenna slot and tuning stub are reshaped in such a way that the proposed antenna operating bandwidth extends along the frequency band specified for UWB applications (3.1-10.6 GHz). In spite of their sharpness, the generated band notches perfectly cancel the interference with the entire 5 GHz wireless local area network (WLAN) frequency band (5.15-5.725 GHz) and that of the military X-band satellite communications downlink (7.25-7.745 GHz). The WLAN band notch is presented by attaching a pair of quarter wavelength parasitic elements to the antenna ground plane, while the other band notch is produced by engraving another pair of half wavelength parasitic elements within the antenna wide slot along the circumference of the antenna tuning stub. The reconfiguration of the band notches is achieved by inserting a pair of PIN diodes for each pair of parasitic elements. The simulated and measured results accentuate the UWB coverage of the proposed antenna, and also verify the reconfigurability and the sharpness of the antenna band notches. Moreover, the antenna has a noticeably stable radiation pattern over the entire band of operation with omnidirectional pattern convenient for portable UWB gadgets.

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A compact fractal UWB antenna with reconfigurable band notch functions

Cited by 15 publications

References 13 publications

Design and Analysis of a Compact Reconfigurable Dual Band Notched Uwb Antenna

Design and Analysis of a Compact Reconfigurable Dual Band Notched Uwb Antenna

A compact frequency‐reconfigurable fractal UWB antenna using reconfigurable ground plane

A compact wide-slot UWB antenna with reconfigurable and sharp dual-band notches for underlay cognitive radio applications

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