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A time-reversal subwavelength array antenna for wireless communication

A time inversion, array antenna technology, applied in the field of antennas, can solve the problem of small impedance bandwidth of subwavelength array antenna units, and achieve the effect of convenient realization, low adjacent channel interference, and strong flexibility

Inactive Publication Date: 2015-07-29
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

However, from the patent specification attached Figure 4 It can be seen that the impedance bandwidth of the sub-wavelength array antenna unit invented by it is not large, and not all frequencies corresponding to the voltage standing wave ratio VSWR are less than 2 in the frequency range of 2.7~6.7GHz, so the working frequency of the array antenna is limited to a certain extent. scope

Method used

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  • A time-reversal subwavelength array antenna for wireless communication
  • A time-reversal subwavelength array antenna for wireless communication
  • A time-reversal subwavelength array antenna for wireless communication

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Embodiment Construction

[0024] A time-reversal subwavelength array antenna for wireless communication, such as figure 1 As shown, it is formed by stacking multiple identical antenna elements, and the distance between two adjacent antenna elements is less than 1 / 2 of the working wavelength λ. Each antenna unit such as figure 2 , 3As shown, it includes a rectangular dielectric substrate and metal patches located on the front and back of the rectangular dielectric substrate.

[0025] Front metal patch such as figure 2 As shown, it includes a peach-shaped radiation unit, which is formed by connecting an isosceles triangular metal patch and a semi-elliptical metal patch, wherein the long axis of the semi-elliptical metal patch is the same as that of the isosceles triangle The bases of the metal patches are equal in length and coincide with each other; on the peach-shaped radiation unit, 26 peach-shaped small holes are evenly etched from top to bottom, and the shape of the peach-shaped small holes is...

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Abstract

The invention provides a time reversal sub wavelength array antenna for a wireless communication, which belongs to the technical field of antennas. The time reversal sub wavelength array antenna is formed by a plurality of same antenna units by stacking, wherein the distance between the two adjacent antenna units is less than 1 / 2 working wavelength gamma. A metal patch on the front face of a medium substrate comprises a peach-shaped radiation unit; the peach-shaped radiation unit comprises an isosceles triangle-shaped metal patch and a semi-elliptic metal patch; and 26 small peach-shaped holes are uniformly etched in the patches of the radiation unit. The radiation unit adopts a microstrip feed line with characteristic impedance of 50 ohms; and the semi-elliptic metal patch part is connected with the microstrip feed line by a trapezoidal transition microstrip line. The metal patch on the back face of the medium substrate is a metal floor; and 14 small semi-elliptic holes are symmetrically etched in the metal floor. The time reversal sub wavelength array antenna for the wireless communication, provided by the invention, is applied to time reversal time domain communication mobile terminals; and as a channel of each antenna unit is relatively independent, so that the interference from an adjacent channel is extremely low, and the higher data transmission rate and higher frequency spectrum utilization rate can be supported.

Description

technical field [0001] The invention belongs to the technical field of antennas, and relates to an array antenna whose spacing between antenna elements works at a sub-wavelength, in particular to a time-reversal sub-wavelength array antenna for a wireless communication terminal. Background technique [0002] Improving the communication capacity and communication rate of the mobile communication system is the goal pursued by mobile communication. With the continuous growth of personal service requirements, mobile terminals are faced with a huge demand for urgent improvement in communication capacity and communication rate. Designing multiple antenna units on the mobile terminal and increasing the number of independent wireless channels is one of the main means for future mobile communications to improve the communication performance of mobile terminals [0003] According to the traditional theory, in order to make the multi-antenna system (array antenna) obtain good space di...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/38H01Q1/48H01Q9/04H01Q13/08H01Q21/28
Inventor 梁木生王秉中葛广顶
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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