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This paper investigates the time-domain characteristics of an ultrawideband (UWB) dielectric resonator antenna (DRA) for two UWB input pulses. The computed spectrum amplitude of a fifth-order Gaussian pulse has better compliance, as per FCC mask, compared to a first-order Rayleigh pulse. The correlation between the input pulses and the radiated pulses in many directions were found to be less when...
This paper presents the design of an on-body wideband dielectric resonator antenna (DRA) for medical applications. The antenna is tested on a homogenous numerical phantom modeling a human arm. This low-profile antenna consists of three different dielectric segments and small metallic patches, which reside above a rectangular ground plane. It is excited by a coaxial probe. The volume of DRA is reduced...
This paper presents the design of an on-body wideband dielectric resonator antenna (DRA) for medical applications. The antenna is tested on a homogenous numerical phantom modeling a human arm. This low-profile antenna consists of three different dielectric segments and small metallic patches, which reside above a rectangular ground plane. It is excited by a coaxial probe. The volume of DRA is reduced...
The pulse preserving capabilities of an ultra wideband (UWB) dielectric resonator antenna (DRA) with full ground plane are investigated. The computed correlation factors in different directions for a fifth-order Gaussian pulse show that the antenna possess excellent transient characteristics in x-y and x-z planes. The results indicate that the (UWB) DRA is suitable for pulse-based impulse radio (IR)-UWB...
This paper presents the design of an antenna with small footprint, small volume and full ground plane for ultrawideband (UWB) systems. The design consists of two different dielectric segments, which reside above a ground plane, and is excited by a small metallic patch connected to a coaxial probe. The selected dielectric resonator (DR) bandwidth is enhanced by removing some dielectric and forming...
A small footprint dielectric resonator antenna (DRA) for potential use in biomedical communication is presented. The antenna is designed to operate within the lower European ultrawideband (UWB) frequency band (3.4–5.0 GHz). The selected DRA geometry in combination with a lower permittivity material results in a reduction of antenna size with wide impedance bandwidth. The bandwidth is enhanced by removal...
H-slot truncated patch is designed to excite a circularly polarized short backfire antenna (SBA). The novel design of SBA contain H-shaped slot with truncated patch fed by single feed probe. It also consists of parasitic circular ring at the height of sub-reflector. It is demonstrated that H-shaped slot truncated patch can achieve a voltage standing wave ratio (VSWR) bandwidth of 4.0% (VSWR <;...
In this paper the design, simulation and experimental exploration of a size reduced Log Periodic Dipole Array (LPDA) antenna is presented. A better optimization has been achieved in a wide frequency range by a suitable alteration of different antenna parameters including Boom length, number of elements, characteristic angles (α, Φ) and deserting Impedance considerations. Different size reduced antenna...
The main purpose of this paper is to design a 1-arm square spiral antenna with Q factor as low as possible to achieve higher bandwidths. The spiral made from material of 2.8 × 107 Siemens/meter conductivity is printed over a dielectric material Rogers RT Duroid 5870 with permittivity 2.33, size 125 × 115 mm and thickness 0.5 mm. The operating center frequency of antenna is set to 2.45 GHz. HFSS (High...
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