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Broadband, High Isolation MIMO Loop Antenna Based on Electromagnetic Coupling

A technology of electromagnetic coupling and loop antenna, applied in the directions of loop antenna, antenna, antenna coupling, etc., can solve the problems of reducing antenna coupling, decreasing isolation level, and unavoidable coupling of multiple antennas and single antennas, and achieves improved isolation and compact structure. , the effect of high isolation

Active Publication Date: 2021-01-05
HANGZHOU DIANZI UNIV
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0004] The MIMO communication system requires the transceiver to be able to receive and transmit signals in multiple links at the same time. The biggest problem in multi-antenna design is that the coupling between individual antennas is unavoidable. Due to the mutual influence between antennas, multiple antennas cannot transmit information independently. Therefore, how to reduce the coupling between antennas has become a key technology for designing MIMO antennas.
As the bandwidth of MIMO antennas gradually increases, the isolation level decreases, and additional isolation structures are often used

Method used

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  • Broadband, High Isolation MIMO Loop Antenna Based on Electromagnetic Coupling
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  • Broadband, High Isolation MIMO Loop Antenna Based on Electromagnetic Coupling

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Embodiment Construction

[0036] The design method of the present invention will be further described below in conjunction with the accompanying drawings.

[0037] A broadband, high-isolation MIMO loop antenna based on electromagnetic coupling proposed by the present invention is composed of four multi-mode loop antennas. Broadband loop antennas such as figure 1 shown. figure 1 (a), (b), and (c) show the geometry of the radiating elements that make up the MIMO loop antenna, corresponding to the top, side, and bottom views, respectively.

[0038] Such as figure 1 As shown, the radiation element of the antenna of the present invention includes a main radiation loop (1), a feed loop (2), a parasitic strip (3), a feed port (5), a 0805 package chip capacitor (4), a parasitic loop (6 ), the dielectric substrate (7) adopts FR4 substrate; the proposed antenna is a two-layer printed antenna (εr=4.4, loss tangent=0.02) on a FR4 substrate (7) with a thickness of 1.0mm, and the inner part of the top layer The ...

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Abstract

The invention discloses a broadband high-isolation MIMO loop antenna based on electromagnetic coupling. The invention comprises four radiating units with the center located on the same straight line,the distance between adjacent radiating units is 5 mm, and the minimum electrical length is 0.03850 [lambda]0 ([lambda)0 is the lowest resonant wavelength); Each radiating element comprises four radiating elements, a dielectric substrate; The radiating element comprises three splitting rings and a parasitic band, wherein the three splitting rings are respectively a main radiating ring, a feeding ring and a parasitic ring. The proposed MIMO antenna, which consists of four radiating elements with sub-wavelength range, can achieve high isolation without any additional decoupling structure. The proposed antenna can be widely used in future 5G wireless systems.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and proposes a broadband, high-isolation MIMO loop antenna based on electromagnetic coupling. Background technique [0002] Due to the rapid development of wireless communication systems, the demand for antennas is getting higher and higher, such as small size, wide bandwidth, and high isolation, and the demand for such antennas is also increasing. Multiple-Input Multiple-Output (MIMO) systems have been used to increase channel capacity and reliability. MIMO (Multiple-Input Multiple-Output) technology, that is, multiple-input multiple-output technology, refers to the use of multiple transmitting antennas and receiving antennas at the transmitting end and receiving end, so that signals are transmitted and received through multiple antennas at the transmitting end and receiving end. Thereby improving the communication quality. The isolation between antenna elements in a MIMO antenn...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/50H01Q7/00H01Q1/52H01Q1/38H01Q21/00
CPCH01Q1/38H01Q1/50H01Q1/521H01Q7/00H01Q21/0006
Inventor 张玮徐魁文赵鹏王高峰
Owner HANGZHOU DIANZI UNIV
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