Feb 19, 2015 ... A novel low-profile high-gain slot antenna based on a modified Fabry- ... wavelength in free space) with the antenna is applied to improve. Analysis of Gain Improvement Techniques - IJARET advancements to build new technologies to increase the efficient use. Wide Band (WB) .... Antenna design using gain improvement techniques are as: Varying Substrate ... and K. Vasudevan, “Compact linear tapered slot Antenna for UWB ... Gain enhancement of the Vivaldi antenna with band notch ... - IIT Kanpur types of metamaterial unit cells with the tapered slot Vivaldi antenna (TSVA) to improve the overall radiation characteristics. [1–4]. The Vivaldi antennas are ... A zero-index metamaterial for gain and directivity enhancement of ... Nov 3, 2017 ... We embed ZIM cells in the typical TSA to improve the gain and directivity of ... Keywords: Zero-index metamaterial, tapered slot antenna, gain ...
Broadband Slotted Coaxial Broadcast Antenna Technology - Dielectric
How To Increase Antenna Signal Strength Through Design 19 July 2017 | Reading Time: 3 minutes Antennas are a core component of modern passive infrastructure. Understanding how to specify, design and install them is crucial to maintaining successful network performance the design of an antenna can have a substantial impact on signal strength. ENHANCEMENT OF BANDWIDTH OF RECTANGULAR PATCH ANTENNA USING ... decrease the size of the antenna [7, 14] and to improve the bandwidth of the antenna [8, 9, 15]. Handset antenna has been reported with wide bandwidth [10]. Half U-slot patch antenna with shorting wall reported in [11] with 28% impedance bandwidth. In this paper, broadband patch antenna with two square slots across its side surface is proposed ... Radar Basics - Slot Antennas Slot Antenna. Slot radiators or slot antennas are antennas that are used in the frequency range from about 300 MHz to 25 GHz. They are often used in navigation radar usually as an array fed by a waveguide. Gain Enhancement of a Microstrip Patch Antenna Using a ... International Journal of Antennas and Propagation is a peer-reviewed, Open Access journal that publishes original research articles as well as review articles on the design, analysis, and applications of antennas, along with theoretical and practical studies relating the propagation of electromagnetic waves at all relevant frequencies, through ...
The half-wave rectangular microstrip antenna has a virtual shorting plane along its center. This may be replaced with a physical shorting plane to create a quarter-wavelength microstrip antenna. This is sometimes called a half-patch. The antenna only has a single radiation edge (equivalent slot) which lowers the directivity/gain of the antenna.
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.
radio - How do I increase loop antenna gain? - Electrical ...
Yagi–Uda antenna - Wikipedia Indeed, the latter had so many antenna elements arranged on its back – in addition to its formidable turreted defensive armament in the nose and tail, and atop the hull – it was nicknamed the fliegendes Stachelschwein, or "Flying Porcupine …
Parabolic antenna - Wikipedia
Slot Antenna If we can excite some reasonable fields in the slot (often called the aperture), we have a slot antenna. Figure 1. Rectangular Slot antenna with dimensions a and b. To gain an intuition about slot antennas, first we'll learn Babinet's principle (put into antenna terms by H. G. Booker in 1946).
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. Effect of antenna size on gain, bandwidth, and efficiency If higher gain is desired, the antenna must necessarily be a narrow-band device. In fact, the input impedance becomes frequency sensitive so rapidly that, for large antennas, no significant increase in gain over that of the uniformly illuminated aperture is possible. Also, if the antenna is lossy, the efficiency falls