Aluminium prototype van AAU-module

Naam: Aluminum CNC machining prototype of 5G AAU module
Color: natural color
Oppervlakte behandeling: ontbramen
Accuracy: +-0.02mm
Materiaal: aluminium profiel
Verwerkingscyclus: 3-7 working days
Test standaard: 2D drawing file provided by the customer

Warmteafvoerfunctie van de aluminium behuizing van de AAU-module

Grootschalige multiple-input-multi-output-technologie is een van de kerntechnologieën van 5G. Gebruik maken van multi-antenne Space Division Multiplexing om de spectrumefficiëntie te verdubbelen, Verbeter de netwerkdekking en systeemcapaciteit. Massive MIMO gebruikt meer dan 100 antennes, wat een orde van grootte hoger is dan die van traditionele basisstations. Daarom, Er kunnen meer onafhankelijke datastromen worden verzonden tussen het systeem en de terminal, waardoor de spectrumefficiëntie en energie-efficiëntie exponentieel worden verbeterd. De toename van het aantal antennes leidt direct tot het verschil in signaalverwerkingsmethoden, nieuwe problemen en uitdagingen veroorzaken.

The Massive MIMO base station in the prior art generally adopts an all-digital architecture solution. Take 16-channel Massive MIMO base station as an example. The active antenna unit (AAU) is composed of a radio remote unit (RRU) and a passive antenna. The device architecture of the AUU supporting the antenna remote electronic adjustment function is shown in Figure 1.

Onder hen, an antenna has a total of 12 elements in the vertical direction. De 16 radio frequency channels are connected with the digital intermediate frequency, and the calibration network and the phase shift network are connected between the 16 radio frequency channels and the 16 wireless channels. In each radio frequency channel, a digital to analog converter (DAC) is connected to the transmitting channel. The transmitting channel is connected with a power amplifier (Power Amplifiers, VADER), and an analog-to-digital converter (Analog to Digital Converter, ADC) is connected with the receiving channel. The receiving channel is connected to a low noise amplifier (Low Noise Amplifiers, LNA), the PA and LNA are connected to the antenna multiplexing unit, and the antenna multiplexing unit is connected to the filter.

Echter, in the prior art AUU device architecture, the feeder from the power amplifier to the antenna channel is longer, the loss is greater, and the insertion loss of the phase shift network is greater.

Aluminum housing prototype of AAU module