Phase shift compensation device for detecting and adjusting an actual dielectric constant in a liquid crystal phase shifter

A phase shift degree compensation device, applied to a phase shifter, wherein the phase shifter comprises a first substrate and a second substrate that are oppositely arranged,

• a resonant circuit, a signal line, and a first alignment layer are on a side of the first substrate facing the second substrate, a conductive layer and a second alignment layer are on a side of the second substrate facing the first substrate, and a liquid crystal layer is between the first alignment layer and the second alignment layer;
• and
• the resonant circuit is configured to detect an actual dielectric constant of the liquid crystal layer,
• the phase shift degree compensation device comprises a loading circuit, an acquisition circuit, and a control circuit,
• the loading circuit is configured to load a direct-current bias voltage and a first alternating current microwave signal in the signal line of the phase shifter,
• the acquisition circuit is configured to acquire a target equivalent dielectric constant of the liquid crystal layer of the phase shifter according to the direct-current bias voltage;
• the resonant circuit is configured to detect the actual dielectric constant of the liquid crystal layer of the phase shifter;
• and
• the control circuit is configured to adjust the direct-current bias voltage according to the target equivalent dielectric constant and the actual dielectric constant, to make the actual dielectric constant approach the target equivalent dielectric constant.

A phase shift degree compensation method, applied to a phase shift degree compensation device,

• wherein the phase shift degree compensation device is applied to a phase shifter, the phase shifter comprises a first substrate and a second substrate that are oppositely arranged,
• a resonant circuit, a signal line, and a first alignment layer are on a side of the first substrate facing the second substrate, a conductive layer and a second alignment layer are on a side of the second substrate facing the first substrate, and a liquid crystal layer is between the first alignment layer and the second alignment layer;
• and
• the resonant circuit is configured to detect an actual dielectric constant of the liquid crystal layer,
• the phase shift degree compensation device comprises a loading circuit, an acquisition circuit, and a control circuit,
• the loading circuit is configured to load a direct-current bias voltage and a first alternating current microwave signal in the signal line of the phase shifter,
• the acquisition circuit is configured to acquire a target equivalent dielectric constant of the liquid crystal layer of the phase shifter according to the direct-current bias voltage;
• the resonant circuit is configured to detect the actual dielectric constant of the liquid crystal layer of the phase shifter;
• and
• the control circuit is configured to adjust the direct-current bias voltage according to the target equivalent dielectric constant and the actual dielectric constant, to make the actual dielectric constant approach the target equivalent dielectric constant
• the phase shift degree compensation method comprises:
• loading the direct-current bias voltage and the first alternating current microwave signal into the signal line;
• acquiring the target equivalent dielectric constant of the liquid crystal layer according to the direct-current bias voltage;
• detecting the actual dielectric constant of the liquid crystal layer;
• and
• adjusting the direct-current bias voltage according to the target equivalent dielectric constant and the actual dielectric constant, to make the actual dielectric constant approach the target equivalent dielectric constant.