Wideband Patch Antenna for HPM Applications

Abstract

This paper presents the design, fabrication, and characterization of a compact wideband antenna for high-power microwave applications. The antennas proposed are array of high-power wideband patches with high compactness and less than λ/10 thick. The concept developed can be fed by highvoltage signals (up to 60 kV) in repetitive operation. Two designs are produced at central frequencies of 350 MHz and 1 GHz. Their relative bandwidth is larger than 40% at 350 MHz and 25% at 1 GHz for S11 < −10 dB, respectively. The arrays studied produce a gain of more than 14 dB.Index Terms-Broad-band antennas, high-power microwave (HPM) antennas, patch antennas.

Numerical Analysis of the Microwave Treatment of Palm Trees Infested With the Red Palm Weevil Pest by Using a Circular Array of Vivaldi Antennas

“…For this reason, an antenna array is usually considered for the application of an HPM because it facilitates the distribution of the high input power to a number of radiating elements, which makes it less difficult to realize high power-handling capacity. The antenna design for HPM application has become an interesting issue, many techniques have been developed to satisfy this special requirement ( [23]- [26]). The main proposed structures are reflector antennas [23], array of horn antennas [24], Helical array antenna [25], array of microstrip patch antennas [26], Vlasov antennas [27], and COBRA antennas [28].…”

“…The antenna design for HPM application has become an interesting issue, many techniques have been developed to satisfy this special requirement ( [23]- [26]). The main proposed structures are reflector antennas [23], array of horn antennas [24], Helical array antenna [25], array of microstrip patch antennas [26], Vlasov antennas [27], and COBRA antennas [28]. The tapered-slot antennas [29] such as Vivaldi antennas are wellknown by their ultra-wide bandwidth.…”

Bandwidth Enhanced MIMO antenna for LTE bands using Split Ring Resonators and Stubs

“…While designing compact antennas, antenna miniaturization techniques are used that can yield low antenna bandwidth, efficiency, and gain. Similarly, in a compact design, the antenna elements are placed close to each other, resulting in high correlation between the antenna elements and therefore poor diversity performance [6,7]. Thus, in the design of a MIMO antenna system, it is important to employ antenna miniaturization techniques that keep the antenna design simple and its compromise with the other antenna parameters is at a minimum.…”

Split ring loaded broadband monopole with SAR reduction

“…Few older methods include stacked parasitic patches and coplanar parasitic arrays , which in either way led to bulky structures. To overcome this, single layer patches like, E shaped patch , printed planar monopole , wide band patch array , and slot loaded patches were exploited. However, stacked geometry was also in existence in the form of Sierpinski fractal geometry , dual‐band slot‐coupled patch antenna .…”