What is the function of coplanar waveguide?

Coplanar waveguide is a type of electrical planar transmission line which can be fabricated using printed circuit board technology, and is used to convey microwave-frequency signals. On a smaller scale, coplanar waveguide transmission lines are also built into monolithic microwave integrated circuits.

What is coplanar waveguide feeding technique?

In a coplanar waveguide-fed microstrip antenna, the antenna and coplanar line are placed on the opposite sides of the same dielectric substrate and the coupling from the coplanar line to microstrip antenna is accomplished via a slot in the ground plane connected directly to the end of the coplanar line.

How do you make a coplanar waveguide?

Getting Started with Coplanar Waveguide Design. All coplanar waveguides come in two varieties: standard coplanar waveguide and grounded coplanar waveguide. The standard coplanar waveguide can be placed above a ground plane, or it can be placed without ground (i.e., on top of a 2-layer of a PCB with no internal ground).

What is the distinguishing feature of coplanar waveguide?

. The structure is obviously symmetrical along a vertical plane running in the middle of the central strip. The other coplanar line, called a coplanar slot (CPS) is the complementary of that topology, consisting of two strips running side by side.

What are the two types of Coplanar waveguides?

There exist two main types of coplanar lines: the first, called coplanar waveguide (CPW), that we will study here, is composed of a median metallic strip separated by two narrow slits from a infinite ground plane, as may be seen on the figure below.

How are parallel strip lines similar to two conductor transmission lines?

A Parallel Strip line is similar to a two conductor transmission line. It can support quasi TEM mode. The following figure explains this. A Coplanar strip line is formed by two conducting strips with one strip grounded, both being placed on the same substrate surface, for convenient connections. The following figure explains this.

Where are the conductors located in a coplanar line?

A coplanar line is a structure in which all the conductors supporting wave propagation are located on the same plane, i.e. generally the top of a dielectric substrate.

How does a coplanar waveguide work on a dielectric slab?

A coplanar waveguide consists of a strip of thin metallic film which is deposited on the surface of a dielectric slab. This slab has two electrodes running adjacent and parallel to the strip on to the same surface. The following figure explains this.