Millimeter Wave RF Front-end In 5G MIMO Channel Emulator

A high-performance MIMO RF front-end of channel emulator with a bandwidth of 500MHz working in the 24.25~30GHz frequency band was produced and tested. The RF front-end contains 32 channels of receivers, 32 channels of transmitters and 8 channels of LOs, which can support 16×16 communication system testing at the same time. The channel emulator supports OFDM signal communication with a maximum input power of 10dBm, and a minimum output power of -99dBm. It has excellent RF performance in a large dynamic range.