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High-stop-band rejection low radar cross section transmission array antenna

An array antenna and suppression technology, which is applied in the direction of antenna, antenna coupling, electrical components, etc., to achieve the effect of improving the suppression ability, realizing reduction, and realizing ultra-wideband

Active Publication Date: 2019-07-23
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although this kind of transmissive unit can form a transmission passband with a high degree of stopband rejection, it presents a state of total reflection to incident electromagnetic waves outside the working frequency band, making its radar cross-sectional area (RCS) equivalent to that of a large metal floor
On the other hand, although RCS reduction technology has been widely concerned in phased array antennas, there are few reports on RCS reduction technology for transmitted array antennas

Method used

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Embodiment Construction

[0023] The technical solutions of the present invention will be described in detail below in conjunction with the drawings and embodiments, but the protection scope of the present invention is not limited to the embodiments.

[0024] figure 1 It is a transmission array unit with high stop band suppression and low RCS in the embodiment of the present invention. It is composed of a high stop band suppression transmission array unit, a dual polarization band-pass absorption type frequency selective surface and a high frequency band stop frequency selective surface. Its reasonable arrangement realizes the radiation characteristics of high gain and high stop band rejection and the reduction of RCS;

[0025] In this embodiment 1, t 1 Thickness is 0.25mm, t 2 with t 3The thickness is 0.5mm; D 1 = 3mm, D 2 = 2mm, D 3 = 1 mm, D 4 =7mm; the overall size of the unit is 18mm×18mm; the width of the metal strip in 101-2 is 0.4mm, L 1 = 4L 2 ;The width of the metal groove in 101-3 i...

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Abstract

The invention discloses a high-stop-band rejection low radar cross section transmission array antenna, belongs to the technical field of wireless communication technologies and radars, and particularly relates to the technologies that the transmission array antenna enhances the capability of suppressing out-of-band interference signals, reduces the radar cross section (RCS) and the like. The high-stop-band rejection low RCS transmission array antenna adopts a horn antenna for feeding, a high-stop-band transmission unit, a high-frequency band-stop frequency selection surface and a dual-polarization band-pass resistance frequency selection surface are integrated, and independent control over transmission characteristics and RCS reduction characteristics is achieved by adjusting correspondingparameters of the units. The high-stop-band rejection low RCS transmission array antenna has the beneficial effects that 1, the high-stop-band rejection degree and low-RCS transmission array antennaunit structure is provided; 2, the suppression capability of the antenna on out-of-band interference signals is obviously improved; and 3, the low-frequency structure and the high-frequency structureare used as the design of the dual-polarization band-pass resistance frequency selection surface floor, so that the reduction of the RCS in an ultra wide band is realized.

Description

technical field [0001] The invention belongs to the field of wireless communication technology and radar technology, and in particular relates to technologies such as enhancing the ability of a transmission array antenna to suppress out-of-band interference signals, reducing the radar cross-sectional area (RCS), and the like. Background technique [0002] The stop band suppression degree is an important index to measure the ability of the communication system to suppress the interference signal. The higher the parameter, the stronger the system's ability to suppress out-of-band interference signals. In most wireless communication systems, the filter is usually directly connected to the input or output port of the antenna. The filter and the antenna, as two large-scale key components, are usually designed independently, but when the filter and the antenna are used in cascade, the impedance will often be mismatched. At this time, it is necessary to introduce an additional ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q19/06H01Q15/00H01Q13/02H01Q1/52
CPCH01Q1/52H01Q13/02H01Q15/0006H01Q19/06
Inventor 屈世伟冯鹏雨李小秋杨仕文孙红兵周志鹏
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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