Warp Gates are devices that link two points in space for near simultaneous transport. They are also known as Transwarp Gates and Star Gates.
Warp Gates work by using Zeta Particles to generate alternate space and link it to two different allowing near immediate transport between the two points. The two points are usually held by a wall of energy to maintain and control the field as well as hold back tetryon radiation.
A warp gate's appearance can vary based on the builder's design and technology but they are generally a circle like device or a set of towers/columns of sorts.