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Directional diagram reconstructed microstrip antenna opened with rectangle groove

A technology of microstrip antenna and rectangular slot, applied in the field of electronics, can solve problems such as difficult carrier conformality, achieve high practical value, small antenna size, and convenient effect

Inactive Publication Date: 2005-03-23
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the disadvantage is that the wire antenna structure is difficult to conform to the carrier

Method used

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  • Directional diagram reconstructed microstrip antenna opened with rectangle groove
  • Directional diagram reconstructed microstrip antenna opened with rectangle groove
  • Directional diagram reconstructed microstrip antenna opened with rectangle groove

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Embodiment Construction

[0026] exist Image 6 In this embodiment, the size and material properties of the antenna are: the metal base plate 12 and the metal patch 14 use copper foil with a thickness of 0.018mm; the size of the metal base plate 12 is 34×34mm 2 ;The outer dimension of the metal patch 14 is 12×12mm 2 ; Rectangular slots 22, 23, 29 and 30 are 1.5 x 0.6 mm in size 2 ; The dimensions of the rectangular slots 25 and 32 are 4.2 x 0.6 mm 2 ; The dimensions of the rectangular slots 26 and 27 are 9.6 x 0.6 mm 2 ; The dimensions of the rectangular slots 21, 24, 28 and 31 are 1.5 x 2.4 mm 2 ; The thickness of the dielectric substrate 13 is 3mm and the size is 34×34mm 2 , the relative permittivity is 3.5; the size of the microelectromechanical switch (MEMS) (15~20) is 0.2×1.2mm 2 . The three MEMS switches 15, 16 and 17 in the left position are in an open state, and the three MEMS switches 18, 19 and 20 in the right position are in a connected state. At this time, when the frequency is 8.75G...

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Abstract

The invention provides a direction graph reconfigurable microstrip antenna with rectanglar channel and includes the metal motherboard 12, medium substrate 13 and metal patch 14. The metal patch 14 is made by means of cutting 12 rectanglar channel (21-32) in the Y axial symmetry on the rectangle metal patch. The metal patch 14 is dressed on the upper surface of the medium substrate 13. The energy is fed back the antenna through the coaxial feeder11. We can realize the connection or disconnection between the conduction bands by changing the work state of the switches (connection or disconnection), then control the stream status of the current between the conduction bands and thus change the current distribution of the whole antenna structure. Adopting the metal patch 14 realizes the planarization of the antenna and makes the aims of small antenna volume; light weight and easy conformation with the carriers (such as planes) come true. The antenna has simple structure and high use value and can be realizes conveniently.

Description

Technical field [0001] The invention belongs to the field of electronic technology, and particularly relates to a microstrip slotted patch antenna technology with a micro-electromechanical switch (MEMS). Background technique [0002] At present, there have been many researches devoted to realizing the scanning of the antenna radiation pattern, but there are still various problems. [0003] In many technical books about antennas, such as "ANTENNA THEORY AND DESIGN" (edited by Warren L. STUTZMAN and Gary A. Thiele), phased array antennas are mentioned, which have been widely used. It obtains the antenna radiation pattern with different directions by changing the phase relationship between the various antenna elements. However, this kind of antenna requires a lot of phase shifters, the loss increases with the increase of frequency, and the antenna array cannot be made very small, and the space occupied is relatively large. [0004] A structurally reconfigurable antenna is des...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q13/08
Inventor 王秉中吴炜霞孙树辉
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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