RF Isolator Application Notes | RF Isolator Applications
This page on RF Isolator application notes covers RF Isolator applications or RF isolator uses. It describes applications or uses of the RF Isolators used in RF and microwave industry.
As mentioned in RF Isolator Working, Isolator is a 2-port device which passes signal in one direction only and prevents the signal going in the other direction. We already know that rf isolator can be obtained by terminating one port of the 3 port rf circulator device. Refer application note on RF Circulator as Isolator>>.
RF Isolator applications or RF Isolator uses
Following are the common uses or applications of RF Isolator.
➤In RF Circuit design
➤In Test and Measurement
➤In RF Chain as a component to prevent any undesired reflection.
RF Isolator in RF Circuit Design
The figure-1 depicts use of isolator in microwave circuit design. The circuit is part of RF tranceiver. As shown isolator is connected at the output of rf mixer or at the output of MMIC amplifier to prevent undesired signal reflection.
RF Isolator to protect T&M Equipments
The figure-2 depicts use of isolator in test and measurement (T&M) to protect testing equipments from damage due to undesired reflections from DUT (Device Under Test). The figure shows signal generator used to test DUT with the help of isolator. Here signal source is connected to port-1 and DUT is connected to port-2.
As mentioned RF Isolator is used at the output of the RF Amplifier to prevent damage to it from undesired reflections. This saves cost as it increases life of the test equipments and components used in the circuit design.