Resistance loading antipodal Vivaldi antenna for radiating ultra-wide spectrum electromagnetic pulses
An electromagnetic pulse and ultra-broadband technology, applied in the fields of electromagnetic fields and microwaves, can solve problems such as irreversible damage to ultra-broadband pulse sources, affecting the service life of pulse sources, large feeder reflected voltage, etc., to achieve the expansion of the lower limit of the working frequency band, processing Low cost and the effect of reducing reflected voltage
Active Publication Date: 2021-12-17
中国人民解放军63660部队
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Problems solved by technology
[0006] The object of the present invention is to provide a resistance-loaded antipodal Vivaldi antenna for radiating ultra-wide-spectrum electromagnetic pulses, to solve the problem of relatively large feeder reflected voltage generated when anti-anti-plantar Vivaldi antennas radiate ultra-wide-spectrum electromagnetic pulses, which is easy for ultra-wide The spectrum pulse source causes irreversible damage, which affects the technical problems of the pulse source's service life, and ensures the radiation efficiency of the antenna to the ultra-wide-spectrum electromagnetic pulse to the greatest extent.
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[0033] The present invention will be described and illustrated in detail below in conjunction with the accompanying drawings.
[0034] Such as figure 1 As shown, a resistance-loaded antipodal Vivaldi antenna for radiating ultra-broadband electromagnetic pulses includes a dielectric substrate 1, a metal radiation patch 2 on the upper surface, and a metal radiation patch 3 on the lower surface, such as figure 1 , 2 As shown, the feed structure 4 and the upper surface resistance load 8, such as image 3 shown. The dielectric substrate 1 is a dielectric rectangular thin plate with a certain relative permittivity, the length and width are L and W respectively, and the thickness is on the order of millimeters. The central axis along the long side direction of the dielectric substrate 1 is P 1 P 2 . The metal radiation patch 2 on the upper surface and the metal radiation patch 3 on the lower surface have the same shape, are printed on the upper and lower surfaces of the dielectr...
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The invention belongs to the technical field of electromagnetic fields and microwaves, and provides a resistance loading antipodal Vivaldi antenna for radiating ultra-wide spectrum electromagnetic pulses. The dielectric substrate is a dielectric rectangular thin plate. The metal radiation module comprises upper / lower surface metal radiation patches which are printed on the upper and lower surfaces of the dielectric substrate respectively, have the same shape and are centrosymmetric about the central axis in the long edge direction of the dielectric substrate. The feed structure is a microstrip line-parallel double-line structure; the elliptical contour lines of the upper / lower surface metal radiation patches and the feed structure microstrip line grounding plate form an elliptical resonant cavity. And the resistor loading is upper surface resistor loading and is positioned on the outer side of the elliptical resonant cavity formed by the upper surface metal radiation patch and the microstrip line grounding plate, one end is connected with the upper surface metal radiation patch, and the other end is connected with the microstrip line positioned on the lower surface through a metal electric hole. High-efficiency radiation of the antipodal Vivaldi antenna on ultra-wide-spectrum electromagnetic pulses is achieved, and meanwhile the reflection voltage of the antenna feed end is remarkably reduced.
Description
technical field [0001] The invention belongs to the technical field of electromagnetic fields and microwaves, in particular to a resistance-loaded antipodal Vivaldi antenna for radiating ultra-broadband electromagnetic pulses. Background technique [0002] Ultra-wide-spectrum electromagnetic pulses mainly refer to time-domain electromagnetic waves whose rise time and pulse duration are on the order of ns or sub-ns, and whose spectrum ranges from tens of MHz to several GHz. They are widely used in radar target detection and identification, electromagnetic damage, and biomedicine, etc. aspect. [0003] Ultra-broadband electromagnetic pulse radiation antenna is one of the key components for generating ultra-broadband electromagnetic pulse. Compared with conventional ultra-broadband electromagnetic pulse radiation antennas such as TEM horn antennas and electromagnetic combined oscillator antennas, Vivaldi antennas are planar end-fire antennas that can be etched from double-side...
Claims
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Login to View More IPC IPC(8): H01Q1/38H01Q1/50H01Q1/48
CPCH01Q1/38H01Q1/50H01Q1/48
Inventor王彬文燕有杰宁辉成真伯
Owner中国人民解放军63660部队