A high power microwave zoom antenna with metal plate lenses

Lawrance, Julie; Christodoulou, C.G.

doi:10.1109/aps.2014.6905152

Cited by 4 publications

(3 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The tapered-slot antennas [29] such as Vivaldi antennas are wellknown by their ultra-wide bandwidth. The Vivaldi antennas could be fabricated using aluminum material [30] to reduce the fabrication cost [31], reduce the dielectric losses, and support high power applications [32]. Tapered slot antennas can be seen in several forms, such as elliptical profiles [33] or exponential profiles [34].…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2020

View full text Add to dashboard Cite

The Red Palm Weevil (RPW) is one of the most dangerous pests of palms in the world. Among several techniques that have been applied to combat the RPW pest such as phytosanitation, chemical insecticides, pheromone traps and biological control, the use of microwave energy for heat disinfestation seems to be a promoting solution. Its main advantages are rapid heat transfer, volumetric and selective heating, speed of switching on and off and no pollution to the environment. This paper presents the design of microwave antenna system for microwave disinfection of date palms application. The microwave system consists of a 3-D circular array of 16 Vivaldi elements. We present an electromagnetic-thermal model, including palm and adult/Larva RPW models, to test their thermal reactions for microwave heating. The 3-D numerical model shows the capability of the microwave system to heat the outer layer of the palm, and reach the RPW lethal temperature. Also, the research discusses the effect of varying the input power and treatment duration to control the RPW. This work provides a powerful tool to simulate the thermal distribution of the palm and RPW insects for different input cases; which help fight against the RPW.

show abstract

Section: Introductionmentioning

confidence: 99%

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

et al. 2020

View full text Add to dashboard Cite

show abstract

“…So far, a large number of scholars have proposed various forms of HPM antennas [3][4][5][6]. Among them, due to its high power capacity, low profile, circular polarization, and rotating-based phase shift, array antenna [7][8][9] has become an important research direction for HPM antennas. The high-power elements, such as helixes [8,9], slots [10], and horns [11], are used for research.…”

Section: Introductionmentioning

confidence: 99%

Design of a Long Linear Helical Subarray for High-Power Cylindrical Conformal Array Antenna

Zhang¹,

Huang²,

Li³

et al. 2020

PIER M

View full text Add to dashboard Cite

Ku-band long linear helical subarray (LLHS) for a high-power cylindrical conformal array antenna has been developed. The LLHS consists of 80 helical antennas can be used to constitute conformal array of cylindrical surface. Through the research on the embedded probe structure, the adjustment of the coupling ability of different types of unit probes, the sealing method of the whole feeding, the problems of large feed reflection, and the uneven coupling amount of the unit probe in the rectangular waveguide system are solved, and the LLHS which can be used in the high-power conformal array is realized. The LLHS which is 52.35λ length can obtain 25.2 dB gain, 2.31 dB axis ratio, 90% aperture efficiency, −15.65 dB reflection at 12.5 GHz, and the reflection is lower than −14 dB during 12-13 dB. In addition, it could handle a pulse power of 166 MW under vacuum condition.

show abstract

“…The zoom antenna concept presented herein and in [1] consists of a horn feed antenna and two metal plate lenses. These lenses are particularly well suited to this application.…”

Section: Introductionmentioning

confidence: 99%

A High-Power Microwave Zoom Antenna With Metal-Plate Lenses

Lawrance

Christodoulou

Taha

2015

IEEE Trans. Antennas Propagat.

View full text Add to dashboard Cite

Metal plate lens antennas were designed and constructed for a high power microwave zoom antenna concept comprising a pyramidal horn feed antenna and two metal plate lenses. Good agreement was found between experiment and simulation. This antenna provides true zoom capability with continuously variable collimated beam output, approximately 10% bandwidth, and very high power handling capability. It can be designed to operate at any frequency in the range of about 100MHz to 10GHz. It was found that nano-modified carbon fiber composites could be used instead of metal plates in these lenses; these composites would reduce the weight of the lens significantly and would help to mitigate possible spurious TM modes induced in the lens when it is in the near field of the feed horn antenna. Index Terms-Zoom antennas, metal plate lenses, parallel plate waveguide lenses, high power microwave zoom antenna I.0018-926X (c)

show abstract

A high power microwave zoom antenna with metal plate lenses

Cited by 4 publications

References 11 publications

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

Design of a Long Linear Helical Subarray for High-Power Cylindrical Conformal Array Antenna

A High-Power Microwave Zoom Antenna With Metal-Plate Lenses

Contact Info

Product

Resources

About