Directional coupler theory

Directional couplers are passive reciprocal networks, which you can read more about on our page on basic network theory. Power dividers and directional couplers are passive devices used mostly in the field of radio. The theoretical insertion loss (dB) vs coupling (dB) for a dissipationless coupler is shown in the graph of figure and the table below.

A directional coupler is a 4-port network that is designed to divide and distribute power. Those coupled lines are used to construct directional couplers. Single-section Microstrip Coupled Line Directional Coupler.

Objective: To measure the directivity and coupling factor of a directional coupler. The basic directional coupler is a four port junction that is used in a wide variety of microwave systems to satisfy. Directional Coupler Theory and Definitions. Use of the Directional Coupler and Ratio Meter to construct a Scalar Network.

Directional Coupler Fundamentals: Directional Coupler (DC) is a . Coupled line directional couplers even- and. This value is added to the theoretical reduction in power that is transferred to . Cross section of the directional coupler and coupling holes. Theoretical coupling variation and directivity for transverse arrangements of.