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This paper presents the design of a planar Quasi-Yagi antenna capable of achieving high Front-to-Back ratio (i.e. FTBR > 34 dB), high gain (i.e. > 6.4 dBi) and relatively wide bandwidth (i.e. up to almost 1 GHz). This antenna is designed to cover the 2.45 GHz ISM band. The overall dimensions of the antenna are 69 × 64 × 1.575 mm3. The antenna is made up of 5 director elements, 1 driven dipole...
A simple design of single-feed polarization-reconfigurable microstrip antenna is presented in this paper. The antenna includes a circular radiating patch, a probe feed, and two parasitic pins. Through tuning the reactive loads between the parasitic pins and the ground plane, the antenna's polarization can be reconfigured among linear polarization, right hand circular polarization, and left hand circular...
A dual-band ultra-wide band (UWB) antenna forradar applications is presented in this paper operated at Ku bandand K band frequencies. The proposed antenna is performedwith Rogers RT5880 dielectric substrate material with thicknessof 1.2mm and designed different rectangular slots. It is fed bycoaxial feeding techniques to achieve the wider characteristics. The most of element area the current is distributed...
A slotted fan shaped microstrip patch antenna with three operating frequencies for radar application is presented. The design model is made to resonate at three frequencies in X-band. The X-band frequency range falls between 8 to 12 Gigahertz and are extensively used in radar applications. The dielectric substrate material used by the antenna is of low cost FR4 (Flame Retardant — Grade 4) Epoxy. To...
In this project, an efficient design of circular shaped microstrip patch antenna for Ultra Wide Band (UWB) applications is proposed with partial ground structure. In the recent era, microstrip patch antenna plays a vital role as they are found to be immensely useful due to its compact nature, easy integration and its light weight. UWB systems are popular because of their larger bandwidth and power...
A rectangular and planar Ultra-wide band (UWB) antenna with dual band notched characteristic is proposed using two U-shaped slots on radiating patch is discussed and presented in this paper. The proposed design uses one inverted U-shaped slot inside another U Slot with beveled corners on the radiating microstrip patch antenna. In this design, microstrip fed is utilized along with partial ground plane...
In this paper, a novel approach of an extracted LC model of monopole antenna with T-slot at ground plane for ultra wide band application is proposed. For extraction of LC model, 50Ω matching between dielectric component and semi conducting at ground plane where T-slot is embedded is done. The monopole with T-slot antenna achieves wide band of 2.1GHz to 11GHz while extracted LC model is 2.1GHz to 10...
The trend in today's wireless application is to design antennas that are compact, robust and ease to integrate with RF circuit components. Microstrip patch antenna is one such type that satisfies the above requirements. But the two main factors of an antenna namely the gain and the bandwidth are low for patch antennas. Usually the gain range of patch antenna is 1–2dB. The most straightforward way...
For a very long while the interests of small size electronic systems have been expanding. Because of progressions in integrated circuits the physical size of system is reduced. As the interest for enhanced integrated systems increments and as the system moves to higher frequencies, microwave creator searches for the up and coming era of microwave materials with enhanced adaptability. There is likewise...
In this paper, a slotted rook shaped novel wide band microstrip patch antenna suitable to be employed for C-Band satellite downlink, Radio Altimeter, IMT, WiMAX applications has been proposed. The proposed antenna is resonant at 4.3 GHz with an impedance bandwidth of 1.419 GHz (3.181 GHz to 4.6 GHz) and a return loss of −53.94dB. The Teflon is used as substrate for designing the proposed antenna having...
This paper presents a microstrip patch antenna consisting of a rectangular patch with four circular slots incorporated into patch for C-Band Satellite Communication. The proposed antenna achieves an impedance bandwidth of 4.7 GHz (3.6 GHz to 8.3 GHz). Maximum reflection coefficient is achieved at 4.4 GHz i.e. −32 dB. Good reflection coefficient and radiation pattern characteristics are obtained in...
This, paper has been investigated the Printed Monopole Antenna for the ultrawideband wireless communication system. The effects of defected ground structure are presented on the basis of simulations performed in IE3D for improvement in impedance bandwidth of proposed antenna. A significant improvement in the impedance bandwidth of the printed monopole antenna has occurred because of a small rectangular...
This paper emphasizes on the design, analysis, fabrication and testing of honeycomb shaped ground slotted microstrip patch antenna suitable to be employed for Ku-Band Broadcasting Fixed Satellite, Mobile Satellite and Downlink Frequency applications. The proposed antenna has been designed and fabricated using flame retardant-4 (FR-4) as substrate having dielectric constant (εr) of 4.4. A flame retardant-4...
This article demonstrates an alternative way of controllable resistive loading in microstrip patch antenna in order to increase its bandwidth. As microstrip patch antenna is a high Q structure, thereby narrow bandwidth, resistive loading (introducing lossy lumped element inside the antenna structure) is considered as potential technique for improving bandwidth. Instead of conventional resistive loading...
A new wideband compact planar microstrip antenna with defected ground structure is presented. The compact size of antenna is 57 mm × 46 mm × 1.59 mm. Defected ground structure antenna has minimum return loss of −24.77 dB and −19.04 dB at operating frequency 5.57 GHz and 3.51 GHz respectively. This antenna provides percentage bandwidth of 52%, ranging from 3.4 GHz to 5.9 GHz with constant gain. This...
Microstrip antennas are one of the most widely studied antenna structures, perhaps due to their inherent properties like compact size, light weight and their capability to get integrated with other circuit components. A three dimensional rectangular slot loaded dielectric (Alteration of Dielectric Substrate) of the antenna for dual-band (S & C) operation has been proposed for remote sensing applications...
A patch antenna (or microstrip antenna) is a type of radio antenna with exclusive features like low profile, low volume, very low power consumption, compactness and ease of fabrication. Due to these factors or capabilities, patch antennas are able to overcome the rising demands in the field of wireless communication like high gain, high power, maximized throughput and low losses. Metamaterials are...
A new and very simple way of implementing defected ground structure (DGS) in a microstrip patch antenna is presented. The dimension of DGS is exactly same as the dimension of radiating element. There are two different DGSs implemented in this paper. The DGSs are complement of each other with respect to their structures. The antennas with these complementary DGSs show four different frequencies of...
Design and analysis of an ultra-wide band antenna consisting extra radiating patch with bandwidth enhancement and band notch characteristic is presented. Antenna consists of an exciting rectangular patch on the front side and an extra radiating patch with π shaped slot on the backside of the substrate. By inserting a slot to the antenna, WLAN notched frequency band is achieved. A conceptual modal,...
In this paper, a novel design of a stacked two layer microstrip patch antenna with wideband characteristics is proposed. This paper follows fractal and stacking methodology to improve the characteristics of microstrip antennas. This antenna consists of two circular patches. The upper radiating patch is suspended with Teflon clamps over the lower driving element. The radiating patch is excited through...
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