To increase the gain, four L-shaped slots are etched in the ground plane. The measured results show that the proposed structure retains a wide impedance bandwidth of 88.07%, which is 20% better than the reference antenna. The average gain is also increased, which is about 4.17 dBi with a stable radiation pattern in the entire operating band. A circularly polarized slot antenna for high gain applications A circularly polarized slot antenna for high gain applications. ... In this paper, the design of a circularly polarized slot antenna is presented and the performance experimentally validated. The radiating element in the antenna is a rectangular slot which is excited using a stepped coplanar waveguide. ... To improve the gain of the antenna ... Design of dual-band and high gain waveguide slot antenna ... A new kind of dual-band and high gain waveguide slot antenna is designed in this paper. By combining a folded plate and a double-layer metal structure with four apertures on its top floor, the proposed antenna has a dual-band characteristic and its gain reaches up to 11.9 dB with only 35 degrees (HPBW) of E-plane at 12.7 GHz and 12.1 dB with 39 degrees at 15.0 GHz.
WiFi : 2.4 GHz Wifi antennas - The DXZone.com
Gain enhancement of a wide slot antenna over a wide frequency band using a low profile, second order bandpass frequency selective surface (FSS) as a super-strate is presented in this paper. The proposed multilayered FSS with non-resonant unit cells in each layer allows in-phase transmission of waves radiated from the antenna BANDWIDTH AND GAIN ENHANCEMENT OF A SLOTTED BOWTIE ANTENNA ... was applied on slotted bowa -tie microstrip antenna. The antenna was designed and simulated using HFSS software. The results obtained showed that by suppressing surface waves and reducing dielectric loss, the gain of the signed antenna de has been enhancedby more than 2 dB withan increase of up to 1.5GHz in the bandwidthThis. new design is Enhanced-Gain Planar Substrate-Integrated Waveguide Cavity ... High-gain antennas have various applications such as in satellite platforms, radar systems, routers, and repeater systems. A number of enhancement techniques for antenna gain have been studied –. To realize enhanced-gain performance, a cavity-backed slot antenna (CBSA) is employed in this study because of its unidirectional characteristic. Impedance Bandwidth and Gain Improvement for Microstrip ...
Two common cavity backed-slot antennas (rectangular and circular cross- ...... The first attempt to increase the gain of the antenna was to examine the influence ...
By introducing rotated square slot diagonal points in the middle of the strip line, the impedance bandwidth of the proposed wide-slot antenna can be significantly enhanced. In addition, the size of the proposed antenna can be reduced. Moreover, the four L-shaped slots are embedded in the ground to increase the gain of the antenna. With the ...
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gain, radiation pattern, return loss, axial ratio and size of an antenna. The slots on the patch or on the ground plane will help to design a antenna with improved bandwidth and effeciency. Key words: microstrip patch antenna, slots, bandwidth, gain, efficiency. 1.INTRODUCTION Microstrip slot antennas invented in 1938 by Alan Blumlein. What are techniques to increase the bandwidth of microstrip ... Microstrip antenna has various applications because it have various advantages as to conventional antenna.But the biggest disadvantages is that it has very narrow bandwidth and low gain.and these are the subject for new research as well the requirement of antenna of small size for various mobile and other applications. A Review on Circular Microstrip Patch Antenna with Slots for ...
... due to curving the antenna is an increased cross-polarization in the E-plane. ... pattern characteristics with moderate gain of approximately 8. dBi [I]. The fmt ...
Another way of phrasing this is decibel gain referenced to an isotropic radiator or change in power relative to an antenna. (pg73) dBd is the other scale used to describe antenna gain is decibels dipole (dBd). US6642898B2 - Fractal cross slot antenna - Google Patents A fractal cross slot broad band antenna comprises a five layer configuration including a radiating fractal cross slot layer having a plurality of antennas each comprising a plurality of radiating arms. How to Hack a satellite dish into a WiFi signal booster « Hacks… There are many ways to recycle a satellite dish and this is one of them. In this video tutorial, you'll learn how to hack an old satellite dish into a biquad WiFi antenna. For detailed, step-by-step instructions on building your own audio … The Pros and Cons of Patch Antennas | HubPages Patch antenna gain is correlated to the ground plane size and the number of patches. The design of the power dividers connected all the patches tend to be in 2 n number of patches.
Omni Antenna Vs - Download as PDF File (.pdf), Text File (.txt) or read online. rf and microwave Horn antenna - Wikipedia Corrugated horn antenna with a bandwidth of 3.7 to 6 GHz designed to attach to SMA waveguide feedline. This was used as a feedhorn for a parabolic antenna on a British military base.