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Broadband microstrip antenna restraining surface waves

A technology of microstrip antenna and surface suppression, which is applied in the direction of slot antenna, resonant antenna, circuit, etc., can solve the problems of complex antenna processing, antenna batch production restrictions, etc., and achieve the effect of suppressing surface wave loss and widening the working bandwidth

Active Publication Date: 2013-08-21
CHONGQING JINMEI COMM
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, periodically punching a series of holes or adding a series of pins makes the antenna processing complicated and the mass production of the antenna is limited

Method used

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  • Broadband microstrip antenna restraining surface waves
  • Broadband microstrip antenna restraining surface waves
  • Broadband microstrip antenna restraining surface waves

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Embodiment Construction

[0011] Such as figure 1 As shown, the present invention includes three laminated boards with the same external dimensions, a chip printed board (1), a power feed printed board (2), and a metal substrate (3). The lower surface of the SMD printed board is coated with a radiation patch (4), the lower surface of the feed printed board (2) is coated with a microstrip line (5), and the upper surface of the fed printed board (2) is coated with The metal ground layer has coupling gaps (6) and "well"-shaped gaps (7) corroded on the metal ground layer. The "well"-shaped gap (7) is formed by the intersection of two parallel slots in the vertical and horizontal directions, and the coupling gap (6) is located in the center of the metal ground layer and surrounded by the "well"-shaped gap (7). The microstrip line (7) excites the coupling slot (6) through electromagnetic coupling, and the radiation wave of the coupling slot (6) excites the radiation patch (4) again, thereby realizing feedin...

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Abstract

The invention provides a broadband microstrip antenna restraining surface waves. The broadband microstrip antenna restraining the surface waves belongs to aperture-coupled microstrip antennas, and comprises a patch printed board (1), a feed printed board (2) and a metal base board (3), wherein the patch printed board (1), the feed printed board (2) and the metal base board (3) are stacked plate materials with identical boundary dimensions. A radiation patch (4) is laid on the lower surface of the patch printed board, a microstrip line (5) is laid on the lower surface of the feed printed board (2), a metal ground layer is laid on the upper surface of the feed printed board (2), and a coupling clearance (6) and a clearance (7) shaped like a Chinese character 'jing' are etched in the metal ground layer. The coupling clearance (6) is located in the center of the metal ground layer and is surrounded by the clearance shaped like a Chinese character 'jing'. The broadband microstrip antenna restraining the surface waves has the advantages of being capable of effectively restraining the loss of the surface waves, enabling the operation bandwidth of the antenna to be broadened, and improving the consistency of the antenna performance of an in-band voltage standing wave ratio, gain, a directional diagram and the like.

Description

technical field [0001] The invention relates to an antenna broadband technology, in particular to a broadband microstrip antenna capable of suppressing surface waves. Background technique [0002] Compared with the traditional microstrip antenna, the microstrip antenna with aperture coupling feed has some unique advantages, such as easy fabrication, easy impedance matching, easy integration of active circuits with the feed network under the ground plane, and the isolation of the ground plane The parasitic radiation of the active circuit has little influence on the antenna pattern, etc., and is very suitable as a unit of the antenna array. [0003] In order to increase the bandwidth of the aperture-coupled microstrip antenna, a suitable and convenient method is to increase the thickness of the medium accordingly, and increasing the thickness of the medium causes a large surface wave loss, which reduces the radiation efficiency of the antenna, thereby causing the VSWR of the a...

Claims

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Application Information

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IPC IPC(8): H01Q9/04H01Q13/10
Inventor 魏瑰胡丹耀张泊远李洪福
Owner CHONGQING JINMEI COMM
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