High-isolation-degree dual-polarized and double-port patch antenna
A high-isolation, patch antenna technology, applied in antenna unit combinations with different polarization directions, slot antennas, antenna coupling, etc., to achieve the effect of compact structure
Active Publication Date: 2015-07-15
XIAMEN UNIV
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Literature (Li Yue, Zhang Zhijun, Feng Zhenghe, and Iskander Magdy F., Dual-mode loop antenna with compact feed for polarization diversity [J]. IEEE Antennas Wireless Propag. Lett., 2011, 10:95-98) adopts a total The monopole antenna with rectangular ring fed by the plane waveguide and the slot of the coplanar waveguide realize the broadband dual-polarization antenna, but the port isolation is only -22dB
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[0023] The following embodiments will further illustrate the present invention in conjunction with the accompanying drawings.
[0024] see figure 1 , the present invention builds a square patch 2 on the front of the dielectric substrate 1 as the antenna radiation element, and the back of the dielectric substrate is grounded. The two diagonals of the square patch are respectively parallel to the two sides of the dielectric substrate. A square notch is symmetrically opened at the lower corner of the square patch, and two narrow slits are extended from the bottom to the two adjacent sides, and two conductor sheets 3 and 4 are externally connected on both sides of the slit corner. The coaxial line feeding port 5 is located on the diagonal line in the vertical direction of the square patch, and the coplanar strip line feeding port 6 is located between the two external conductor sheets 3 and 4 .
[0025] The dielectric substrate 1 is a double-sided copper-clad FR4 microwave dielec...
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Abstract
The invention provides a high-isolation-degree dual-polarized and double-port patch antenna, and relates to a patch antenna. The high-isolation-degree dual-polarized and double-port patch antenna is provided with a media base plate, a square patch is built at the front side of the media base plate to be used as an antenna radiation element, and the back side of the media base plate is grounded; two diagonal lines of the square patch are respectively parallel to the two side edges of the media base plate, a square notch is symmetrically formed at each lower top corner part of the square patch, two symmetrical seams extend from the square notch to the two adjacent side edges of the square patch, and two conductor sheets are externally connected with the two sides of the seam corners; a coaxial feed port is positioned on the diagonal line in the vertical direction of the square patch, and a coplanar belt feed port is positioned between the two external connecting conductor sheets. The isolation degree between the ports in a work frequency band is greater than 23dB. The antenna can realize the dual-polarized characteristic, and the polarization isolation degree in the maximum radiation direction is greater than 30dB. The antenna has good port isolation degree and polarization isolation degree, and can be applied to wall hanging WLAN (wireless local area network) wall hanging base station antennas.
Description
technical field [0001] The invention relates to a patch antenna, in particular to a unidirectional radiation high-isolation dual-polarization dual-port patch antenna fed by a coaxial line and a coplanar strip line. Background technique [0002] Typically, mobile communication systems employ a single antenna or a combination of internal and external antennas. However, in order to meet the demand for miniaturization and mobile communication terminals that have become popular in recent years, built-in antennas are more popular. Also, as the demand for high-speed multimedia services using wireless mobile communication technology increases, the channel capacity in the mobile communication system tends to increase rapidly. Therefore, interest in antenna technologies for broadband mobile communication systems satisfying miniaturization, increased channel capacity, and transmission reliability is growing. Against this background, antenna technology using multiple-input multiple-ou...
Claims
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Login to View More IPC IPC(8): H01Q9/04H01Q13/10H01Q21/24H01Q1/52
Inventor 李伟文张斌游佰强周建华刘勇徐伟明
Owner XIAMEN UNIV