Broadband radiating unit and antenna array

Abstract

The invention provides a broadband radiating unit and an antenna array. The broadband radiating unit comprises a support Balun, a radiation arm, a feeding core, a positioning dielectric block, a positioning support snap, a parasitic radiation sheet and an oscillator pad. The radiation arm is above the support Balun, and an oscillator body is formed by the support Balun and the radiation arm. The feeding core is in the cylindrical hole of the support Balun and is coated and positioned by the positioning dielectric block. The oscillator pad is under the oscillator body. The parasitic radiation sheet is fixed above the positioning support snap which is fixed above the radiation arm. In antenna array, a PCB protruding column is arranged under the support Balun of each radiation unit, the PCB protruding column goes through a reflection plate and a PCB and then is welded to a microstrip grounding block, one end of the feeding core is connected to the oscillator body by using the mode of coupling feed, and the other end goes through the reflection plate and the PCB and then is welded to a microstrip line. The radiating unit of the invention has the advantage of simple assembly, few solders, flexible wire running of a back PCB, and higher intermodulation stability.

Description

technical field [0001] The invention relates to the field of mobile communication base station antennas, in particular to a broadband radiation unit suitable for broadband frequency bands and a corresponding antenna array. Background technique [0002] In the cellular mobile communication system, the broadband smart antenna is the main component for radio frequency signal coverage and an important part of the entire mobile transceiver system. The performance of the broadband smart antenna is directly related to the overall performance of the mobile communication network. [0003] The traditional broadband smart antenna radiating unit mainly has the following problems: 1. The gain of the radiating unit in the frequency band above 2.5 GHz is obviously low. For example, the Chinese patent with patent number 201010581310.9 has the above problems. 2. The application occasions are limited, and some occasions with high requirements for intermodulation cannot be satisfied. F...

AI Technical Summary

Problems solved by technology

[0005] In view of the fact that the current broadband radiating unit generally has low gain in the high frequency band, poor cross-polarization ratio, different polarization and co-polarization isolation, and many other problems such as complex assembly and poor intermodulation stability, The present invention proposes a broadband radiation unit, which can obviously overcome the above-mentioned many problems. The antenna array formed by using this radiation unit according to a specific method has good circuit performance and radiation index, simple assembly, high intermodulation stability, and comprehensive performance. Excellent advantage

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