Millimeter wave signal transmission integration device

A millimeter wave signal transmission integration device, comprising:

• an antenna array module, used to transmit and receive a millimeter wave signal, and convert the millimeter wave signal to an intermediate frequency (IF) signal or convert the IF signal to the millimeter wave signal, wherein the antenna array module comprises a frequency up-converting/down-converting module, which is used to down-convert the millimeter wave signal to the IF signal and up-convert the IF signal to the millimeter wave signal;
• a flexible substrate, separated from the antenna array module and connected to the antenna array module via a first connection interface which is an I-PEX connector, and used to transmit/receive the IF signal;
• a coaxial cable, connected to the flexible substrate, and used to transmit and receive the IF signal via a second connection interface;
• a signal processing module, connected to the coaxial cable via a third connection interface, and used to transmit and receive the IF signal;
• and
• a metal plate, attached to one surface of the flexible substrate, wherein the one surface of the flexible substrate is opposite to one other surface of the flexible substrate connected to the antenna array module,
• wherein the second connection interface and the third connection interface are I-PEX connectors.