Millimeter wave radio frequency structure

A millimeter wave radio frequency (RF) structure, comprising:

• a substrate, wherein the substrate material comprises a liquid-crystal polymer material;
• at least one dual-polarized antenna element, arranged on the substrate, and configured to transmit and receive a frequency signal;
• an RF transceiver module, configured to transmit and receive a frequency signal with an electric field strength direction unpolarized;
• a switching module, electrically connected to the at least one dual-polarized antenna element and the RF transceiver module, wherein the switching module comprises a first switching element and a second switching element electrically connected to the at least one dual-polarized antenna element, and a third switching element electrically connected to the first switching element and the second switching element;
• the first switching element and the second switching element respectively transmit a first signal with a first polarization as an electric field strength direction and a second signal with a second polarization as an electric field strength direction according to a received signal;
• and the third switching element receives the first signal from the first switching element and the second signal from the second switching element, or switches a signal received from the RF transceiver module and feeds the signal to the first switching element or the second switching element;
• and
• a protective layer, wherein a material of the protective layer comprises a liquid-crystal polymer material, and the protective layer is arranged on the modules.