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An obliquely polarized antenna and an antenna array composed of it

An antenna array, oblique polarization technology, applied in the field of antenna arrays, can solve problems such as increasing the difficulty of antenna design

Active Publication Date: 2019-09-17
CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This will increase the difficulty of antenna design, limit the choice of unit form, and also limit the choice of array form

Method used

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  • An obliquely polarized antenna and an antenna array composed of it
  • An obliquely polarized antenna and an antenna array composed of it
  • An obliquely polarized antenna and an antenna array composed of it

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] like figure 1 As shown, the vertically polarized patch antenna unit 4 is arranged on the side of the first microstrip line away from the horizontally polarized line source 5 . Figure 2 to Figure 7 It is the electrical performance simulation result of the obliquely polarized antenna in Embodiment 1, the simulation software is hfss15, and the iteration error is 0.01. The following are standing wave ratio, gain, axial ratio, electric field vector distribution in the field area on the plane at 1 / 4 wavelength in front of the array (top view), electric field vector distribution in the far field area (stereo view), and electric field vector distribution in the far field area (top view).

[0036] Embodiment 1 Obliquely polarized antenna parameters

[0037] Gain(dB) 13.2 3dB lobe width (degrees) 13.1x 96.8 SLLmax(dB) -14.7

Embodiment 2

[0039] like Figure 8 As shown, the vertically polarized patch antenna unit 4 is arranged on the side of the first microstrip line close to the horizontally polarized line source 5 .

[0040] Figure 10 ~ Figure 12 It is the electrical performance simulation result of the obliquely polarized antenna in Embodiment 2, the simulation software is hfss15, and the iteration error is 0.01. The order is standing wave ratio, gain and axial ratio.

[0041] Embodiment 2 is obliquely polarized antenna parameters

[0042] Gain(dB) 12.7 3dB lobe width (degrees) 13x 80.7 SLLmax(dB) -15.3

Embodiment 3

[0044] like Figure 9 As shown, the vertically polarized patch antenna unit 4 is arranged on the side of the first microstrip line close to the horizontally polarized line source 5 . The second microstrip line is connected to a side close to the vertically polarized line source 6 on the horizontally polarized patch antenna unit 3 .

[0045] Figure 13 ~ Figure 15 It is the electrical performance simulation result of the obliquely polarized antenna of Embodiment 3, the simulation software is hfss15, and the iteration error is 0.01. The order is standing wave ratio, gain and axial ratio.

[0046] Embodiment 3 Obliquely polarized antenna parameters

[0047] Gain(dB) 11.6 3dB lobe width (degrees) 14.6x 71.8 SLLmax(dB) -11.8

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Abstract

The invention relates to the field of antennas, in particular to an obliquely polarized and planarized patch antenna with micro-strip double line sources and an antenna array formed by the obliquely polarized and planarized patch antenna. The antenna comprises a vertically polarized line source and a horizontally polarized line source which are arranged on a same micro-strip board; the vertically polarized line source and the horizontally polarized line source are connected with a same feed point through a power divider; the vertically polarized line source and the horizontally polarized line source are roughly the same in gain, beam width and input impedance; the antenna array is formed by arranging a plurality of obliquely polarized antennas in parallel at intervals; and the obliquely polarized antennas are laid on a same substrate. By the obliquely polarized antenna, a mature linearly polarized antenna technology is effectively utilized; the horizontally polarized line source and the vertically polarized line source are mixed to form the array to form an obliquely polarized line source; the planarization characteristic of the patch antenna is kept; and use in the field of automobile collision avoidance and the like is facilitated.

Description

technical field [0001] The invention relates to the field of antennas, in particular to a microstrip double-line source, obliquely polarized, planarized patch antenna and an antenna array composed thereof. Background technique [0002] In the fields of automotive anti-collision radar and other fields, it is often necessary to design obliquely polarized antennas or antenna arrays with a working frequency of about 10-100 GHz, light weight, small shape, and planar structure. There are two main uses of this type of antenna: [0003] 1. Single carrier can send and receive smoothly or multi-antenna send and receive multiple times; [0004] 2. The carriers move in opposite directions. When the other sends and receives, it forms cross-polarization due to oblique polarization, which automatically shields the other from sending electromagnetic waves; [0005] Because of the usual design of obliquely polarized antenna arrays, it is considered that each unit is designed to be obliquel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/38H01Q21/10H01Q21/24
Inventor 周伟华
Owner CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
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