Phase shifter and antenna

A phase shifter, comprising:

• a first substrate and a second substrate opposite to each other;
• a signal transmission structure between the first substrate and the second substrate, wherein the signal transmission structure is configured to transmit a microwave signal;
• a phase shifting structure between the first substrate and the second substrate, wherein the phase shifting structure is configured to adjust a phase of the microwave signal;
• wherein the signal transmission structure comprises a connection structure on the signal transmission structure;
• the signal transmission structure is connected to the phase shifting structure through the connection structure;
• the phase shifter further comprises:
• an isolation structure between the first substrate and the second substrate;
• wherein the isolation structure is provided on the connection structure and separates a dielectric layer of the signal transmission structure from a dielectric layer of the phase shifting structure,
• wherein the phase shifter comprises a first signal transmission region, a second signal transmission region, and a phase adjustment region;
• wherein the first substrate and the second substrate are opposite to each other in the first signal transmission region, the second signal transmission region, and the phase adjustment region;
• wherein the signal transmission structure comprises a first signal transmission structure and a second signal transmission structure,
• wherein the first signal transmission structure is provided in the first signal transmission region and is configured to transmit the microwave signal to the phase shifting structure;
• the phase shifting structure is in the phase adjustment region and configured to adjust the phase of the microwave signal from the first signal transmission structure and transmit the microwave signal with an adjusted phase to the second signal transmission structure;
• and
• the second signal transmission structure is provided in the second signal transmission region and is configured to output the microwave signal with the adjusted phase;
• wherein the first signal transmission structure is connected to the phase shifting structure through a connection structure on the first signal transmission structure;
• the second signal transmission structure is connected to the phase shifting structure through a connection structure on the second signal transmission structure.