A Compact UWB Bandpass Filter using Hybrid Fractal Shaped DGS

Shahu, Babu Lal; Chattoraj, Neela; Pal, Srikanta; Upadhyay, Dileep Kumar

doi:10.1590/2179-10742017v16i1731

Cited by 6 publications

(5 citation statements)

References 15 publications

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“…In the size comparison process, [ 21 , 22 , 23 , 24 , 25 , 26 ] had higher frequency and permittivity values than the proposed filter. Nevertheless, the size of the proposed filter was analyzed to be smaller than [ 21 , 22 , 23 , 24 , 25 , 26 ]. Therefore, the small size of the proposed filter is very meaningful.…”

Section: Resultsmentioning

confidence: 99%

Miniaturized Bandpass Filter Using a Combination of T–Shaped Folded SIR Short Loaded Stubs

Yoon

Kim

Lee

2022

Sensors

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The consumption of multimedia content is ubiquitous in modern society. This is made possible by wireless local area networks (W–LAN) or wire service systems. Bandpass filters (BPF) have become very popular as they solve certain data transmission limitations allowing users to obtain reliable access to their multimedia content. The BPFs with quarter–wavelength short stubs can achieve performance; however, these BPFs are bulky. In this article, we propose a compact BPF with a T–shaped stepped impedance resonator (SIR) transmission line and a folded SIR structure. The proposed BPF uses a T–shaped SIR connected to a J–inverter structure (transmission line); this T–shaped SIR structure is used to replace the λg/4 transmission line seen in conventional stub BPFs. In addition, a folded SIR is added to the short stubs seen in conventional stub BPFs. This approach allows us to significantly reduce the size of the BPF. The advantage of a BPF is its very small size, low insertion loss, and wide bandwidth. The overall size of the new BPF is 2.44 mm × 1.49 mm (0.068λg × 0.059λg). The proposed BPF can be mass produced using semiconductors due to its planar structure. This design has the potential to be widely used in various areas including military, medical, and industrial systems.

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Section: Resultsmentioning

confidence: 99%

Miniaturized Bandpass Filter Using a Combination of T–Shaped Folded SIR Short Loaded Stubs

Yoon

Kim

Lee

2022

Sensors

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“…Such type of the problems has been noted in the articles. [66][67][68][69][70][71][72][73][74][75][76][77][78] Aforesaid attempts were made by researchers because compact sized, light weight, low cost, easy to fabricate, portable, and proficient to portray multiband/ wideband behavior antenna is the need of present technological era. Antenna which is capable to fulfill the afore-mentioned properties, can easily be implemented in the handheld devices.…”

Section: Research Motivationmentioning

confidence: 99%

“…A novel and compact sized ultra wideband (UWB) bandpass filter (BPF) (can be said as HFA) has been developed by integrating Minkowski and Koch geometries on defected ground structure (DGS) for wireless communication systems. 68 Proposed BPF was composed of stepped impedance lines and a composite right/left-handedtransmission line (CRLH-TL) constructed with capacitive gap in conductor strip and a hybrid fractal-shaped ring slot in ground plane. This capacitive gap between conductor strip and fractal-shaped DGS has played significant role to attain the lower and upper passband cutoff frequencies.…”

Section: Ultra Wideband Filter Using Minkowski and Koch Geometrymentioning

confidence: 99%

Comparative analysis of hybrid fractal antennas: A review

Sharma

Bhatia

2021

Int J RF Microw Comput Aided Eng

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The comprehensive review of hybrid fractal antenna (HFA) has been presented in this article. Distinguished researchers have designed, analyzed, and investigated numerous types of HFA's as per the requirement of the market. Firstly, it gives introduction about the fractal antennas (FAs) along with the need of integration of the fractal geometries then research motivation. The extensive literature survey has been divided into three different parts as, fusion of same type of fractal geometries, amalgamation of two distinct fractal geometries and concoction of three different fractal geometries, further, the comparative analysis among these HFA's has been made on the basis of their size, geometries used for designing, number of resonant frequency bands, gain, bandwidth, radiation efficiency, circular polarization, and their applications. The juxtaposition among different HFA's has also been delineated in tabular form for more limpidity along with the findings of individual research article. The challenges faced by researchers while designing the antennas are also being portrayed in this article. This review may be supportive for the novices to carry out their research on HFA as such type of comparative analysis on HFA's is not existing in the open state of art literature as per best of authors knowledge.

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“…This technique was widely used to design circuits dedicated to filtering applications [22,23,24]. In fact, this structure is achieved by engraving slots in the ground plane of the circuit in order to disturb the current distribution, thus the characteristics of the transmission lines can be modified.…”

Section: Microstrip Diplexer With Defected Ground Structurementioning

confidence: 99%