Protótipo de alumínio do módulo AAU

Nome: Aluminum CNC machining prototype of 5G AAU module
Color: natural color
Tratamento da superfície: rebarbação
Accuracy: +-0.02milímetros
Material: Liga de alumínio
Ciclo de processamento: 3-7 working days
Padrão de teste: 2D drawing file provided by the customer

Função de dissipação de calor da caixa de alumínio do módulo AAU

A tecnologia de múltiplas entradas e múltiplas saídas em grande escala é uma das principais tecnologias do 5G. Usando multiplexação por divisão espacial com múltiplas antenas para dobrar a eficiência do espectro, melhorar a cobertura da rede e a capacidade do sistema. Massive MIMO usa mais de 100 antenas, que é uma ordem de grandeza superior à das estações base tradicionais. Portanto, mais fluxos de dados independentes podem ser transmitidos entre o sistema e o terminal, melhorando assim exponencialmente a eficiência do espectro e a eficiência energética. O aumento no número de antenas leva diretamente à diferença nos métodos de processamento de sinal, causando novos problemas e desafios.

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.

Entre eles, an antenna has a total of 12 elements in the vertical direction. O 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, PA), 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.

No entanto, 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