AAU/RRU
Application Overview

High-power GaN/GaAs transistor packaging: Provides excellent heat dissipation, high-frequency stability, and low parasitic parameters to ensure signal amplification efficiency and linearity.
RRU (Remote Radio Unit):
Function:
Converts digital signals from the Baseband Unit (BBU) to radio frequency (RF) signals and vice versa.
Location:
Typically installed close to the antenna to minimize signal loss due to longer RF cables.
Used in:
Primarily used in 4G and earlier generations, but also a component of the 5G architecture.
AAU (Active Antenna Unit):
Function: Integrates the functions of the RRU and the antenna into a single unit.
Key Feature: Supports 5G features like Massive MIMO (Multiple Input Multiple Output) and beamforming.
Benefits:
- Improved Coverage: Massive MIMO and beamforming technologies allow for more focused and directed signals, improving coverage and reducing interference.
- Increased Capacity: Massive MIMO enables the use of more antennas, increasing the number of data streams and boosting network capacity.
- Simplified Deployment: Integrating the antenna and radio unit simplifies installation and reduces the physical footprint of the base station.
Used in: 5G and beyond.
In essence:
The RRU is a legacy component that converts signals for transmission and reception.
The AAU is a more advanced unit in 5G that combines the RRU and antenna, enhancing performance through technologies like Massive MIMO and beamforming.
