A Planar Multiport High Isolation Broadband Triple Integrated Antenna

Abstract

The invention discloses a planar multi-port high-isolation broadband triplex integrated antenna, which belongs to the field of antennas; the antenna is based on a single-layer dielectric plate, the lower surface of which is a grounded metal patch, and two symmetrical square slots are etched through the gap. The upper surface is provided with a part of the feed structure, which has three ports; among them, the feed networks of the first and third ports are located on the top layer of the dielectric board, and the feed lines are perpendicular to each other, and the feed networks of the second port The electrical network is directly opposite to the third port, and is attached to the bottom layer of the dielectric board together with the ground plane; the first port is a slot coupling feed, which is composed of a feed line and a step impedance resonator; the second port is a coplanar waveguide feed Power, including feeder lines and symmetrical Y-shaped microstrip stubs; the third port is coupled feeder, including feeder microstrip lines and T'-shaped microstrip line stubs. The three feeding ports are excited at the same time to realize simultaneous transmission and reception of the antenna, and different feeding methods help to achieve higher port isolation.

Description

technical field [0001] The invention belongs to the field of antennas, and relates to a passive radio frequency front-end device, in particular to a planar multi-port high isolation broadband triple integrated antenna. Background technique [0002] With the popularization of wireless communication technology, from military communication to commercial radio to civilian radio, it has greatly improved people's living conditions and played an important role in the rapid development of productivity. [0003] As an important factor in promoting the progress of human science in the information society, wireless mobile communication technology has met the needs of applications in different scenarios and various customers through continuous evolution, updating and integration in recent years. In terms of the most commonly used mobile phones in civil wireless communication, through the development and iteration of the second generation (2G), third generation (3G) and fourth generation...

AI Technical Summary

Problems solved by technology

However, since the multiplexing system of the mobile terminal has high requirements for miniaturization, the size limitation will inevitably lead to the distance between multiple antennas not meeting the ideal requirements, and the performance of the system will also be reduced.

[0005] In a multiplexing system, an antenna is required to have multi-frequency and multiplexing characteristics. The traditional multiplexing antenna is composed of a multi-frequency antenna and a multiplexer cascaded. The isolation between the ports of this type of structure is realized by the multiplexer. Not only The design of multiplexers is more demanding, and at the same time, it cannot meet the size requirements of small integrated mobile terminals under the rapid development of mobile communication technology

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