How to select an RF Hybrid Coupler
A hybrid divides an input signal in to two signals of equal amplitude with a constant 90° or 180° phase differential. These are also know as 3 dB Hybrids as they divide the signal equally between two ports, similar to a 2 way power divider. Hybrids typically have a lower insertion loss than resistive power dividers or combiners.
Types of Hybrid Couplers:
· 90° Hybrid Coupler: 90 degree hybrid couplers split the input signal in to two equal signals with a 90 degree phase differential.
· 180° Hybrid Coupler: 180 degree hybrid couplers split the input signal in to two equal signals with a 180 degree phase differential.
Frequency (MHz): This is the frequency at which the rf hybrid operates.
Average Power (W): The power level that the hybrid device can handle while maintaining consistent performance.
Insertion Loss (dB): The loss in the signal when the input signal is split into two is know as the insertion loss. The lower the insertion loss the better the performance of the hybrid.
Package Type: RF and microwave hybrids are available in a number of package types – Surface Mount, Modules with Connectors – SMA Hybrids, BNC Hybrids etc.