On the design of nano-arm fractal antenna for UWB wireless applications

This article explores the design and analysis of a CPW fed modified square monopole antenna for super wideband (SWB) application. Three key features of proposed radiating structure are: (1) semi‐circular base provides smother impedance variation and helpful in the creation of more than decade (10:1) impedance bandwidth (super‐wideband); (2) modified square shaped monopole reduce the lower frequency of operation and create larger BDR value (7871.49); (3) trimmed edges provide stabilized radiation characteristics even at higher frequencies. In order to endorse the simulated outcomes, prototype of proposed antenna structure is fabricated and tested. Good settlement is to be found between measured and simulated outcomes. From experimental results, it confirms that the proposed radiator is operating over more than decade (14.52:1) bandwidth that is, 0.95‐13.8 GHz (VSWR < 2). Time domain analysis of proposed radiator also supports its applicability for SWB applications. The proposed radiator is quite appropriate for different wireless applications such as Amature Radio, Digital Audio Broadcasting, ISM, Wi‐Fi, GPS, Bluetooth, WLAN, and UWB applications.

Section: Resultsmentioning

confidence: 83%

Super‐wideband CPW fed modified square monopole antenna with stabilized radiation characteristics

Okas

Sharma

Gangwar

2018

“…From the frequency vs radiation efficiency plot (Figure ), it appears that the radiation efficiency seems to decrease with an increase in frequency . The average radiation efficiency was found to be of 75%.…”

Section: Resultsmentioning

confidence: 94%

A compact monopole antenna for ultra‐wideband applications

Saha

Goodbody

Karacolak

et al. 2018

In this paper, a slotted circular ultra‐wideband (UWB) microstrip patch antenna is reported. The antenna is designed, simulated, fabricated, and tested experimentally. The antenna operates over a 4.0‐40 GHz (164% fractional bandwidth) range with a return loss of 10 dB and voltage standing wave ratio (VSWR) < 2. The designed monopole antenna is of dimensions 28.1 mm × 17.1 mm with an electrical size of 0.37 λ × 0.23 λ at 4 GHz frequency. The antenna is fabricated on FR‐4 substrate with a dielectric permittivity of 4.4, loss tangent of 0.02, and a thickness of 1.4 mm. The designed antenna exhibits nearly omnidirectional radiation patterns over the entire impedance bandwidth with more than 2.8 dB peak gain for the entire frequency range and 75% of average radiation efficiency. The presented antenna can be used in UWB communications along with C‐band, X‐band, Ku‐band, K‐band, Ka‐band, WLAN, and future wireless applications.

“…The reason behind this pattern is quite obvious because as the frequency increases, effective aperture of antenna is relatively increasing in comparison to wavelength

(|, G \propto \frac{true}{A_{e}})

. Slight decrement in radiation efficiency is due to the lossy nature of Rogers RT/Duroid 5880 substrate material as well as higher connector losses …”

Section: Resultsmentioning

confidence: 99%

Circular base loaded modified rectangular monopole radiator for super wideband application

Okas

Sharma

Gangwar

2017

This letter investigates a circular base loaded modified rectangular monopole radiator. Two main aims of presented research article are: (a) to achieve super wide bandwidth with the help of circular base loaded rectangular monopole, tapered microstrip line feed and elliptical ground plane; (b) to increase bandwidth dimension ratio (BDR) with the help of modification in rectangular monopole. To authenticate the proposed radiator, prototype has been fabricated and measured. Experimental outcome shows that the proposed radiator operates over the frequency range from 0.96 to 13.98 GHz (VSWR < 2) with a bandwidth ratio of 14.56:1 and having fractional bandwidth of 174.29%. Bandwidth dimension ratio for proposed radiator is 7468.51. Time domain analysis has also been performed to support the applicability of proposed radiator in super wideband applications.