2022-09-10 17:34 Status: Tags: # Lange Three ports: - isolated - through - coupled (90 degree transmission angle compared to through port) [^1] Length is approximately equal to one quarter-wavelength of centre frequency. Combined width is comparable to width of a 50-ohm line on the host substrate. ## Phase response Clean quadratic response unlike a [branchline coupler](branchline%20coupler.md).  --- # References [^1]: [Microwaves101 | Lange Couplers](https://www.microwaves101.com/encyclopedias/lange-couplers)