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A six-element microstrip patch antenna based on the theory of small reflection is investigated. The radiators are excited by a novel transmission line. The maxim and minim energy on the proposed transmission line are determined based on voltage allocation on a short-circuited microstrip line. Each radiator, made of a square microstrip patch, is designed to resonate at 5.8 GHz target frequency, with...
Gap coupled Microstrip Antenna (MA) provides high bandwidth and so finds its use in various kinds of wireless communications. Optimization of microstrip patch antennas has been achieved by a technique popularly known as Particle Swarm Optimization (PSO). In this paper, PSO is used to optimize the resonant frequency of rectangular gap coupled MA. Inspection is carried out for microwave frequencies...
This effort aims to design and fabricate a triple frequency rectangular patch antenna, by attaching a single stub element of a varying length (rectangular-shaped), to the top left corner of radiating edge of the patch, to act as a tuning network. The patch and the stub are excited through a 50 Ohms insert-fed line, connected to a midpoint of the patch. The whole structure is embedded on a single FR4_epoxy...
This paper emphasizes on the design and performance analysis of dual resonant air gap antenna design. The proposed antenna has been designed using Flame Retardant 4 (ΓΚ4) substrate of dielectric constant, εr=4.4 sandwiched between copper patch and ground plane. The design o f antenna has been made to ensure the compact size of the designed antenna and operating bandwidth of 1.007 GHz (7.281 GHz-8...
In this paper, the design and performance analysis of dual circular stacked microstrip patch antenna for S-band applications has been proposed. In the proposed antenna design, the substrate of material FR 4 having dielectric constant 4.4 have been used. The ground, patch and feedline are of copper material. The proposed antenna has two circular stackings on the patch and the antenna has impedance...
In this paper, a compact air gap microstrip patch antenna with high gain and directivity for satellite and mobile communication has been proposed. The proposed antenna has been designed using Flame Retardant 4 (FR4) as substrate having dielectric constant εr of 4.4 sandwiched in between patch and ground plane made up of copper. The power from coaxial connector is fed to the designed antenna via microstrip...
In this paper, a novel multiple slitted and circular stacked microstrip patch antenna with high gain has been proposed. The composite effect of employing slots and stacking provides enhanced return loss (dB), high gain (dB) and directivity (dBi). The proposed antenna design employ FR4 material as a substrate having dielectric constant 4.4. The copper material has been used for patch and ground. The...
This paper presents a novel textile microstrip antenna employing substrate of Denim material with dielectric constant of 1.6 having dimensions are 23.32mm × 27.8mm × 0.7mm. The ground, patch and feed line are of copper material. The proposed antenna is a dual resonant rectangular patch antenna with a square slot on the ground which is operated at 12.00 GHz and 12.67 GHz with corresponding return loss...
The paper examines the influence of a thin air gap between a dielectric resonator and its ground plane on radiation parameters of the dielectric resonator antenna (DRA) operating with certain higher order modes. Gain improvement of about 1.6 dB is observed for optimal size of the gap, resulting in 13.2 dBi realized gain. Along with gain enhancement, the side lobe level suppression is improved as well...
A novel realisation of high gain and compact slotted planar patch antenna for the radio frequency identification (RFID) application is presented here. The antenna was printed on a dielectric Flame Retardant FR-4 Epoxy substrate of dielectric constant (εr=4.3). Simulated results obtained for this antenna exhibits resonant frequency of 5.8 GHz, better return loss of -36.91 dB, high gain of 8.308 dBi,...
This paper presents a THz stacked Microstrip antenna employing substrates of material FR4 with dielectric constant of 4.4. The ground, patch and feed line are of copper material. The proposed antenna is decagonal in shape and is resonant at 8.2 THz with a return loss of −38.85dB. The bandwidth of the antenna is 360 GHz (8.058 THz – 8.418THz). The performance of optical antenna has been analyzed in...
This paper concentrates on the design and performance analysis of blind hole substrate slotted microstrip patch antenna design for X-band applications. The anticipated antenna has been designed using Flame Retardant 4 (FR4) substrate of dielectric constant, εr of 4.4 sandwiched between copper patch and ground plane. The intended antenna has compact area with impedance bandwidth of 560 MHz (7.67 GHz–...
A design with broadband and circularly polarized radiation from an open-slot antenna has been successfully demonstrated in this communication. The proposed antenna, which consists of an open slot and a patch-protruded feeding topology, provides a large bandwidth, which covers the operation bandwidth of a satellite digital audio radio service system. The open slot is formed by an L-shape conducted...
A compact dual-band antenna for C-band applications is presented. The designed antenna working in 4.5GHz and 7.8GHz frequency bands. We design the dual-frequency bands antenna with the coaxial feed and U-shaped ladder strips. The antenna satisfied the −10 dB impedance bandwidth is 64 MHz (4.468 GHz–4.532 GHz) and 128 MHz (7.736 GHz–7.864 GHz). The experimental and simulated results of the proposed...
In this paper, a flexible I shaped stacked novel ultra wideband (UWB) antenna with defected and reduced ground resonant at 1.26 GHz with an impedance bandwidth of 1.278 GHz (1.0596 GHz to 2.3374 GHz) has been proposed which can be suitably employed for satellite reconnaissance, amateur radio, future soil moisture and sea surface salinity mission applications. The material employed for substrate is...
The microstrip wideband antenna has attracted much attention due to the applications of multiple wireless communication systems, such as the global positing system (GPS at 1.575 GHz), the digital communication system (DCS at 1.8 GHz), the international mobile telecommunications-2000 (IMT-2000 at 2.1 GHz), the wireless local area network (WLAN at 2.45 GHz), the long term evolution-2600 (LTE2600 at...
This paper proposes a novel heart-shaped band-notched UWB antenna with compact and simple structure. The antenna comprise of a microstrip feeding line, a heart-shaped patch to achieve UWB characteristic, and a defected ground with bevels to obtain good impedance match and stable gain in the operating band. The band-notched characteristic is achieved by a U-shaped slot on the patch. The measured results...
A printed tri-band UHF RFID tag antenna for Monza4 chip which is mountable on metallic surface is proposed with a miniaturized size of 20mm × 35mm × 1.6 mm. A grounded patch is designed to realize the character of mounting the metallic surface. The meander shape lines are used to miniaturise the proposed antenna. To realize three bands, three microstrip parasitic ground lines of different resonance...
In this paper, a novel low-profile RFID antenna is proposed. Based on original microstrip patch antenna, the tag antenna adopts a shorted stub and H-shape slot. Implementing a shorted stub can easily match the impedance of RFID chip. Using H-shape slot increases the length of current path on patch, miniaturizing the tag antenna. The size of the proposed antenna is 62 × 18 × 0.79mm3 and its simple...
This paper presents high gain substrate slotted microstrip patch antenna design for X-band satellite applications. The proposed antenna has been designed by using the substrate of Flame Retardant 4 (FR4) having dielectric constant εr of 4.4. The ground, patch and the feedline are made of copper material having thickness of 0.02mm and conductivity of 5.58 × 106 Siemens/m. The proposed antenna has been...
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