Microstrip Array Antenna with Low Coupling and Small Spacing

Abstract

A microstrip array antenna with low coupling and small spacing in the field of wireless communication technology, including: a dielectric plate, two radiation array units, a microstrip decoupling unit, a ground plate and two feeding elements, two radiation array units and a microstrip The strip decoupling units are all attached to one side of the dielectric board, the first radiating array unit and the second radiating array unit are respectively connected to the first feeding element and the second feeding element, and the two feeding elements are connected to the ground plate, The ground plate is disposed on the other side of the dielectric board. The invention uses a traditional microstrip line as a decoupling unit, which is easy to conform, has a simple structure, can better improve coupling, and has high isolation.

Description

technical field [0001] The invention relates to a device in the technical field of wireless communication, in particular to a microstrip array antenna with low coupling and small spacing. Background technique [0002] With the rapid development of communication technology, people put forward higher requirements for high-speed wireless communication. MIMO (Multiple-Input Multiple-Output, Multiple-Input Multiple-Output) technology adopts multiple antennas at the transmitting end and the receiving end, which can double the capacity of the communication system and the utilization rate of spectrum without increasing the bandwidth. Breaking through the traditional theory that the multipath signal is the limitation that the interference of the system must be suppressed, and making full use of the multipath signal is a research hotspot in the next generation of wireless communication. However, array antennas based on MIMO technology require a high degree of isolation between units,...

AI Technical Summary

Problems solved by technology

[0003] After searching the existing technical literature, it is found that the Chinese patent application number: CN200810064729.X, the patent publication number: CN 101316008A, the invention patent name is: MIMO mobile terminal multi-antenna with high isolation and low correlation characteristics, the main body of the antenna is double-layer Dielectric structure, the patch antenna is located on the upper surface of the upper medium, and the lower surface is the lower floor. By setting a dumbbell-shaped opening in the lower floor, the isolation between the patches can be significantly improved. However, the opening on the floor will cause backward Radiation, the shielding of the antenna will be affected

Chinese patent application number CN200480008890.5, patent publication number: CN1768448A, invention patent name: phased array antenna and inter-unit mutual coupling control method, the antenna is provided with a dielectric separator in the path of mutual coupling signals between antenna units, which can Effectively reduce the coupling coefficient between antennas, but this method is at the expense of increasing the antenna volume

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