Resonator And Filter With Resonator

A filter, wherein the filter comprises:

• a multitude of resonators;
• wherein at least one of the multitude of resonators is a high-frequency resonator and comprises:
• a resonator housing, in which a resonator space is formed;
• and
• a container with a cavity, in which a liquid crystal is accommodated, wherein the container is at least partially arranged in the resonator space,
• wherein the container comprises an electrode configuration for generating an electric control field to control the permittivity of the liquid crystal.

A method for manufacturing a resonator, wherein the resonator comprises:

• a resonator housing, in which a resonator space is formed;
• and
• a container with a cavity, in which a liquid crystal is accommodated, wherein the container is at least partially arranged in the resonator space,
• wherein the container comprises an electrode configuration for generating an electric control field in order to control the permittivity of the liquid crystal;
• the method comprising:
• providing a resonator housing with a resonator space;
• providing a container with a liquid crystal and an electrode configuration for generating an electric control field in order to control the permittivity of the liquid crystal;
• inserting the container into the resonator housing or mounting the container to the resonator housing such that a part of the container protrudes into the resonator space so that an electrically controllable dielectric is provided in the resonator space.