Journal ArticleDOI
Linearly polarised radial line slot antenna for high-power microwave application
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TLDR
In this article, an all-metal linearly polarised radial line slot antenna without dielectric is proposed for high power microwave application, which has an antenna prototype operating at 9.27 GHz with a height of 10 cm and an aperture radius of 25.5 cm.Abstract:
An all-metal linearly polarised radial line slot antenna without dielectric is proposed in this study. As a result of this study, new design suggestions have been introduced which greatly contribute to the performance improvement of this type of antennas for high power microwave application. An antenna prototype operating at 9.27 GHz was designed with a height of 10 cm and an aperture radius of 25.5 cm. Experimental measurements show that at the centre frequency, the antenna gain reaches 31.3 dBi, an aperture efficiency of 55%, return loss is less than −20 dB. The radiation patterns indicate a reasonable cross-polarisation level more than 30 dB below the co-polarisation. This all-metal antenna efficiency is higher than the traditional one.read more
Citations
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Journal ArticleDOI
Significant Bandwidth Enhancement of Radial-Line Slot Array Antennas Using a Radially Nonuniform TEM Waveguide
TL;DR: In this paper, a non-uniform radial TEM waveguide was used to increase the gain of radial line slot array (RLSA) antennas to over 30% in terms of bandwidth, gain, and area.
Journal ArticleDOI
An All-Metal High-Gain Radial-Line Slot-Array Antenna for Low-Cost Satellite Communication Systems
TL;DR: The antenna comprises a single-layer radial TEM waveguide, fully filled with air, formed between a metal ground plate and a parallel metal slotted sheet, leading to simple, low-cost fabrication, and may be useful for space and high-power microwave applications.
Journal ArticleDOI
Ku -Band Radial-Line Continuous Transverse Stub Antenna With Transmit-Array Lens for High-Power Microwave Application
TL;DR: In this article, an antenna operating at Ku-band for high-power microwave (HPM) applications is presented, which can realize directional radiation of the coaxial transverse electromagnetic (TEM) mode and form a pencil beam in the desired direction.
Journal ArticleDOI
A Radial Line Slot-Array Antenna With Low Side Lobes and a Uniform-Phase, Tapered-Amplitude Aperture Field Distribution
TL;DR: A circularly polarized radial line slot array (CP RLSA) antenna with a nearly optimal monotonic variation of slot length with radius is presented, in order to simultaneously reduce antenna side-lobe levels and to make the aperture phase distribution nearly uniform.
Journal ArticleDOI
A Dual-Band Circularly Polarized Elliptical Patch Reflectarray Antenna for High-Power Microwave Applications
TL;DR: In this paper, a dual-band reflecting element is designed by arranging two embedded elliptical patches with different sizes in a square lattice grid to realize continuous $360^{\mathrm {\circ }}$ phase response in both bands.
References
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Journal ArticleDOI
Recent Advance in Long-Pulse HPM Sources With Repetitive Operation in S-, C-, and X-Bands
Jun Zhang,Zhenxing Jin,Jianhua Yang,Huihuang Zhong,Ting Shu,Jiande Zhang,Bao-Liang Qian,Cheng-Wei Yuan,Zhi-Qiang Li,Yu-Wei Fan,Shengyue Zhou,Liu-rong Xu +11 more
TL;DR: In this paper, the authors analyzed the difficulties in producing a long-pulse HPM for the O-type Cerenkov HPM source, and suggested that explosive emissions on surfaces of designed eletrodynamic structures restrained pulse duration and operation stability.
Journal ArticleDOI
A linearly polarized radial line slot antenna
TL;DR: In this paper, a linear polarized radial line slot antenna (RLSA) was proposed to produce a uniform aperture distribution with linear polarization, and the radiation patterns indicated a reasonable cross-polarization level more than 15 dB below the copolarization.
Journal ArticleDOI
Linearly polarized radial-line slot-array antennas with improved return-loss performance
TL;DR: In this article, a series of 550 mm diameter linearly polarized Ku-band prototype antennas were constructed to experimentally investigate the efficiency of reflection cancellation and beam squinting on the antenna.
Journal ArticleDOI
A reflection cancelling slot set in a linearly polarized radial line slot antenna
TL;DR: In this paper, a radial line slot antenna (RLSA) slot design is presented where reflection canceling slots are added to the conventional ones; four slots form one slot set as a unit radiator of linear polarization.
Journal ArticleDOI
Designs and Experiments of a Novel Radial Line Slot Antenna for High-Power Microwave Application
TL;DR: In this paper, a radial line slot antenna (RLSA) is designed to improve the power handing capacity of high-power microwave systems by adding a reflection cancelling slot to the conventional one.