Slotted ultra wideband antenna for bandwidth enhancement

Rahayu, Yusnita; Rahman, Tharek Abd; Ngah, Razali; Hall, Peter

doi:10.1109/lapc.2008.4516963

Cited by 16 publications

(12 citation statements)

References 14 publications

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“…Two notches of dimensions (W 2 × L 2 ) are etched on both sides of the lower corners of the radiator for bandwidth enhancement. The discontinuity occurred from cutting notches at the bottom side of the antenna enforces the vertical current mode which leads to improved impedance matching performance at higher frequencies [15]. It also ensures the polarization purity of the radiated electromagnetic signal by reducing the cross-polar radiation from the antenna.…”

Section: Proposed Antenna Design Descriptionmentioning

confidence: 99%

Design of a Novel Antenna and Its Characterization in Frequency and Time Domains for Ultra Wide Band Applications.

Ershadh¹,

Krishna²,

Bhayaveni³

et al. 2014

PIER C

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Abstract-A novel compact planar monopole antenna for UWB applications is proposed in this paper. The proposed novelty of the antenna is attributed to the addition of suitable beveled stubs to a basic circular geometry of the radiator as an improved impedance matching technique to achieve enhanced radiation performances. The feed circuit is a tapered microstrip line with a matching section over a semi-elliptical ground plane. The proposed antenna achieves sufficient impedance bandwidth for a VSWR < 2 for frequencies from 3-15 GHz covering the entire UWB range (3.1-10.6 GHz), which is verified experimentally. Also this design achieves good gain, constant group delay and a near omnidirectional radiation pattern over the UWB band. The UWB characteristics of the antenna are evaluated in frequency and time domains. Results reveal that the proposed antenna has flat transfer function, linear phase and good impulse response with virtually no ringing which are the essential requirements for an UWB antenna for efficient pulse transmission/reception. The simulated and measured results of these parameters are presented. The performance results of the novel antenna with other designs is also compared and presented.

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Section: Proposed Antenna Design Descriptionmentioning

confidence: 99%

Design of a Novel Antenna and Its Characterization in Frequency and Time Domains for Ultra Wide Band Applications.

Ershadh¹,

Krishna²,

Bhayaveni³

et al. 2014

PIER C

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“…In particular, this process can be related to the fact that ground plane truncation acts as an impedance matching element that controls the impedance bandwidth of the circular patch. Thus, it creates a capacitive load that neutralizes the inductive nature of the patch to produce nearly pure resistive input impedance [16][17][18].…”

Section: Uwb Antenna Design Considerationmentioning

confidence: 99%

Design, Implementation and Performance of Ultra-Wideband Textile Antenna

Osman¹,

Rahim²,

Azfar³

et al. 2011

PIER B

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Abstract-Communication technology is increasingly pervading everyday life. The rapid progress in wireless communication besides the increasing interest in wearable antennas and electronics in civil, medical, sport wear and military domains promises to replace wiredcommunication networks in the near future in which antennas are in more important role. Recently, there has been growing interest in the antenna community to merge between wearable systems technology, Ultra-Wideband (UWB) technology and textile technology. All these together have resulted in demand for flexible fabric antennas, which can be easily attached to a piece of clothing. In this paper, three different structures of UWB antennas using clothing materials and suitable for wearable application were fabricated and presented. The substrate of the designed antennas was made from jeans textile material, while radiating element and ground plane are made out of copper tape. The operating frequency of all three designs is between 3 GHz and 12 GHz. Measured results are compared with simulations and good agreement was observed.

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“…elements are deduced from an homothetic ratio (Rahim & Gardner, 2004), introducing a capacitive coupling between the radiating element and the ground plane (Rmili & Floc'h, 2008), using microstrip-line feed and notching the ground plane (Tourette et al, 2006), using symmetrical notch in the CPW-feeding (Zhang et al, 2009), asymmetrical feeding by microstrip line together with reduced ground plane and appropriate gap-patch distance (Karoui et al, 2010), adding T-slots for both patch and feeding strip (Rahayu et al, 2008), using cross-lot in the truncated circular patch with tapered microstrip feed line (Kshetrimayum et al, 2008). All these techniques are based on the modification of the surface current distribution to broaden the antenna's impedance bandwidth.…”

Section: Basic Design Considerationsmentioning

confidence: 99%