Wheel shaped modified fractal antenna realization for wireless communications

Gupta, Manisha; Mathur, Vinita

doi:10.1016/j.aeue.2017.06.017

Cited by 47 publications

(20 citation statements)

References 25 publications

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“…The substrate thickness is important parameter to decide the antenna bandwidth, quality factor, and the power radiated. The circular ring with the outer radius “ R 1 ” and inner radius “ R 2 ”, which forms the outer ring of the Ashoka chakra . The circular ring structure is derived from circular patch whose radius “ R 1 ” is calculated using …”

Section: Antenna Designmentioning

confidence: 99%

Circular ring structured ultra-wideband antenna for wearable applications

Nadh

Madhav

Kumar

et al. 2018

Int J RF Microw Comput Aided Eng

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This article explores the design and analysis of a novel ultra‐wideband (UWB) antenna for body‐centric applications. The designed antenna consists of circular ring structured radiating element with 24 spokes, which resembles the shape of Ashoka chakra (Indian National flag emblem). The antenna placed on the semi flexible RT/Duroid 5880 with dielectric constant of 2.2 and occupying the dimension of 30 × 25 × 0.8 mm3. The present design aims at optimizing the antenna structure to cater UWB operating spectrum (3.1‐10.6 GHz) with a novel patch shape, which looks like the Ashoka chakra. The proposed antenna is analyzed by placing on three‐layered human phantom model and examined on head, arm at three of its operating frequencies. The maximum specific absorption rate (SAR) is found to be 1.23 W/kg and 1.29 W/kg when computed at arm and head of the human body respectively. The SAR values are observed under those conditions are satisfying the international safety standards such as FCC & IEEE C95.1:2005 & ICNIPR. Analysis of system savant (ANSYS Savant) radiation performance characteristics are also studied by placing the proposed antenna on virtual human body environment.

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Section: Antenna Designmentioning

confidence: 99%

Circular ring structured ultra-wideband antenna for wearable applications

Nadh

Madhav

Kumar

et al. 2018

Int J RF Microw Comput Aided Eng

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“…A lot of work has been done in antennas for UWB communication . The congestion of frequency band spectrums has become a serious concern since sub‐bands like WLAN (4.94‐5.92 GHz) and X‐band (8‐12 GHz) lies inside UWB region.…”

Section: Introductionmentioning

confidence: 99%

“…5 A lot of work has been done in antennas for UWB communication. [6][7][8] The congestion of frequency band spectrums has become a serious concern since sub-bands like WLAN (4.94-5.92 GHz) and X-band (8)(9)(10)(11)(12) GHz) lies inside UWB region. Due to the presence of these bands inside UWB region, interference occurs between UWB systems and other sub-bands.…”

Section: Introductionmentioning

confidence: 99%

Stub loaded, low profile UWB antenna with independently controllable notch‐bands

Awan

Zaidi

Hussain

et al. 2019

Micro & Optical Tech Letters

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The design and realization of a compact coplanar waveguide (CPW) fed ultrawideband (UWB) antenna having dual‐notched bands is presented in this article. The antenna possesses on demand notch bands at 4 to 5.78 GHz and 6.83 to 8.22 GHz. The presented design consists of a single iterated octagonal patch antenna designed on cheap FR4 substrate. The stub is utilized to achieve a wide impedance matching of 7.33 GHz (3.2‐10.5 GHz), while the notch‐bands are realized using split ring circular slots. These notch‐bands are controlled independently without affecting the overall performance of the antenna. Simulated and measured results showed that the antenna offers excellent performance with an overall size of 20 × 23 mm2, high efficiency of more than 90%, and a nearly omnidirectional maximum gain of 4.8 dBi. The performance of the proposed antenna is better than the antennas presented in the literature in term of size, stable gain, and independently controllable notch bands. Besides these advantages, the compact size allows the antenna to integrate into small devices easily and help manufacturers to produce a massive number of antennas comfortably.

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“…During the last decades, the wireless communication is developed rapidly with portable devices such as cell phone, laptop, tablet, and in wireless system, the antenna is an important part which should be compact with special quality for multi-band application with low profile, lightweight, and omnidirectional pattern for these applications. 1,2 Recently, the printed inverted F antenna (PIFA) has been developed in various shapes for obtaining multi-band application with omnidirectional pattern plus high efficiency based on the placement of the feed and shortening wall. 3,4 Furthermore, multiband structures are developed by implementation of various slot shape on the ground and making complicated form of the patch such as Meander ring, Inverted-S Monopole, Sub-ring, which is printed on a thin substrate.…”

Section: Introductionmentioning

confidence: 99%

“…In 7 , the dual-band MIMO antenna with eight folded monopole antennas operates in 3.4-3.6 GHz and 4.55-4.75 GHz bands. However, owing to the limited space, it is hard to design an element working in more than two bands with traditional methods [1][2][3][4][5][6][7] .…”

Section: Introductionmentioning

confidence: 99%

Split ring resonator metamaterial loads for compact Hepta band printed inverted F antenna with circular polarization

Hatami

Naser‐Moghadasi

2018

Micro & Optical Tech Letters

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The printed inverted F antenna (PIFA) has been developed in various shapes for the wireless application. In this paper, we have developed a novel shape based on loop antenna where it is in interaction with the split ring resonator (SRR) load and the extended ground by two vias for multi‐band antenna to cover, GSM900, GSM1800, UMTS, GSM1900, WCDMA 100, 802.11b/g, LTE2600, and 802.11a/n. The antenna total dimensions are 100 mm × 60 mm and it is fabricated on a low‐cost FR‐4 substrate. The prototype antenna has omnidirectional pattern and VSWR is lower than 3 for wireless requested frequency. We obtained 2‐4 dBi antenna gain plus 70% efficiency and circular polarization at 2.5 and 5.5 GHz. The prototype antenna shows low SAR for GSM 900 and GSM 1800 while it has checked for 1 g and 10 g with maximum value of 0.942 and 1.27 W/kg for 900 and 1800 MHz, respectively. In this new survey, the SAR value is decreased sensitively as per previous range in PIFA. The prototype has simulated with HFSS and CST that we used full wave method in both simulation software and finally we compared simulation and experimental result.

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Wheel shaped modified fractal antenna realization for wireless communications

Cited by 47 publications

References 25 publications

Circular ring structured ultra-wideband antenna for wearable applications

Circular ring structured ultra-wideband antenna for wearable applications

Stub loaded, low profile UWB antenna with independently controllable notch‐bands

Split ring resonator metamaterial loads for compact Hepta band printed inverted F antenna with circular polarization

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