Terminology » RF Components » Branch Line Coupler S-Matrix Explained

Branch Line Coupler S-Matrix Explained

branch line coupler
s-matrix
rf device
quadrature hybrid
rf component

This page describes the Branch Line Coupler S-Matrix (scattering matrix).

It also covers the basics of a Branch Line Coupler along with its S-matrix.

What is a Branch Line Coupler?

  • It is a lossless 4-port hybrid device.
  • All four ports are matched.
  • The device is reciprocal, and hence the S-matrix is symmetric.
  • Port-1 is the input port, port-2 is the output port, port-3 is the coupled port, and port-4 is the isolated port.

Branch Line Coupler

  • Figure 1 depicts a Branch Line Coupler.
  • It is also known as a quadrature hybrid or 90° hybrid.

Branch Line Coupler S-Matrix

The Branch Line Coupler S-matrix is as follows:

Branch Line Coupler S-Matrix

RF Isolator: Applications, Features, and Types

RF Isolator: Applications, Features, and Types

Explore RF isolators, passive two-port devices vital for controlling signal flow and protecting RF components in radio frequency circuits. Learn about their features, types, and applications.

rf isolator
signal protection
microwave
Understanding Orthomode Transducers (OMT) in VSAT Systems

Understanding Orthomode Transducers (OMT) in VSAT Systems

Explore the function, applications, and technical specifications of Orthomode Transducers (OMTs) in VSAT satellite communication, enabling efficient signal polarization management.

vsat
orthomode transducer
satellite communication
PIN Diode as RF Phase Shifter

PIN Diode as RF Phase Shifter

Learn how a PIN diode can be used as an RF phase shifter circuit. Understand its working principle, advantages, and limitations in RF applications.

rf
pin diode
phase shifter