Liquid crystal-based high-frequency device and high-frequency switch

A high-frequency device comprising:

• a signal electrode configured with a combination of a plurality of first segments;
• a first ground electrode configured with a combination of a plurality of second segments and arranged in parallel with the signal electrode;
• a first liquid crystal layer disposed between the signal electrode and the first ground electrode;
• and
• one or more first distribution electrodes near both ends of each of the signal electrode and the first ground electrode,
• wherein the first distribution electrodes each have a solid plate shape having a width that covers at least some segments of the first and second segments, and separated from each of the signal electrode and the first ground electrode by an insulating layer,
• a distance between the first and second segments and the first distribution electrodes, a dimension of each of the first and second segments and the first distribution electrodes, and a material that forms the insulating layer are selected such that the first segments form capacitive coupling according to a control voltage applied thereto, thereby forming a tangential electric field along an arrangement direction of the first segments, and
• neighboring first distribution electrodes are disposed to be spaced apart from each other.

A high-frequency switch comprising one or more high-frequency devices, wherein the one or more high frequency devices comprise:

• a signal electrode;
• a first ground electrode arranged in parallel with the signal electrode;
• a first liquid crystal layer disposed between the signal electrode and the first ground electrode;
• and
• a first dielectric layer disposed on at least one of a first position and a second position, wherein the first position is a position between the first liquid crystal layer and the first ground electrode and the second position is a position between the signal electrode and the first liquid crystal layer, while being in contact with the first liquid crystal layer,
• wherein the first dielectric layer has a dielectric constant that is larger than a dielectric constant of the first liquid crystal layer.