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Double frequency dual polarization wide angle scanning co-aperture phased array antenna

A phased array antenna and wide-angle scanning technology, which is applied to antenna unit combinations, antennas, and antenna arrays with different polarization directions, can solve the problems that multi-band common-aperture antennas are not particularly extensive, and there are many reports of ultra-wideband antennas. Achieve the effect of easy processing and assembly and simple structure

Inactive Publication Date: 2018-01-12
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So far, the research on multi-band common-aperture antennas is not particularly extensive, and the related reports are far less than UWB antennas.

Method used

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  • Double frequency dual polarization wide angle scanning co-aperture phased array antenna
  • Double frequency dual polarization wide angle scanning co-aperture phased array antenna
  • Double frequency dual polarization wide angle scanning co-aperture phased array antenna

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Embodiment 1

[0028] A dual-frequency dual-polarization wide-angle scanning common-aperture phased array antenna of this embodiment selects two antenna arrays working in the P-band and S-band respectively for common-aperture design, wherein the P-band low-frequency antenna is horizontally polarized, and the S-band antenna is horizontally polarized. Band high frequency antenna is vertically polarized, f H / f L =7.3. The common-aperture antenna unit is shown in Figure 2(a), and the unit size is 0.28f L ×0.23f L , below is the lower metal floor 11 with a rectangular connection cavity 12 . The lower dielectric plate 13 has a thickness of 3 mm and a dielectric constant of 2.2, and is placed on the lower metal floor 11 , with a microstrip feeder 14 printed on its upper surface. One end of the microstrip feeder 14 is connected to the coaxial inner core, and the other end is suspended above the connection cavity 12. When the P-band low-frequency antenna is working, the microstrip feeder 14 is c...

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Abstract

The invention discloses a double frequency dual polarization wide angle scanning co-aperture phased array antenna. The antenna comprises a low frequency antenna unit and a high frequency antenna unit;the high and low frequency antennas respectively work in different work modes, a radiation aperture of each low frequency antenna unit and a sub array of the high frequency antenna are conformal, sothe finally acquired co-aperture array can realize double frequency bands, dual polarization and wide angle scanning; the low frequency antenna is a connection chamber antenna, a metal floor is with achamber, for avoiding influence of height inconsistency of the metal floor on work performance of the high frequency antenna, a reflection surface employs a selection surface with resistance frequency when the high and low frequency antennas are conformal; feed of the two-frequency band antennas are in common ground to the metal floor, feed ground connection of the high frequency antenna can be direct connection or direct communication with the metal floor through a capacitor, a resistor and an inductor. The antenna is advantaged in that double frequency dual polarization can be realized in aco-aperture antenna form, wide angle scanning can be realized without grating lobe, the structure is simple, and the antenna is easy to process and assemble.

Description

technical field [0001] The invention relates to an antenna, in particular to a dual-frequency dual-polarization wide-angle scanning common-aperture phased array antenna, which belongs to the technical field of wireless communication. Background technique [0002] Phased array antennas have been widely used in the military field for their fast electrical scanning and beamforming capabilities. With the development of phased array technology and application requirements, the demand for phased array antennas is increasingly biased towards broadband, wide-angle and multi-band antennas. For multi-function radar or multi-function communication systems, broadband or multi-band antennas can work in multiple frequency bands at the same time, so that only one antenna is needed to complete different work requirements, which can greatly reduce the volume of radar or communication systems. weight and cost. At the same time, for multifunctional radar systems, the polarization diversity o...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q1/48H01Q1/50H01Q21/00H01Q21/06H01Q21/24H01Q21/30
Inventor 屈世伟邹文慢王亚茹杨仕文
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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