Patent ID: 9729363
Date: 2017-08-08
CPC Classifications: G01R,G01S,H04L

Claim:
1. A frequency discriminator comprising: a first power splitter for splitting a signal into first and second paths, wherein the first path is configured to provide a first, straight-through signal and the second path includes a first frequency-dependent element so as to provide a second signal, a first circuit configured to compare the first and second signals and generate a first instantaneous frequency signal in dependence thereon, a second power splitter for splitting a signal into third and fourth paths, wherein the third path is configured to provide a third, straight-through signal and the fourth path includes a second frequency-dependent element so as to provide a fourth signal, a second circuit configured to compare the third and fourth signals and generate a second instantaneous frequency signal in dependence thereon, and a third power splitter configured to split an input signal and feed the input signal to the first and second power splitters, wherein the first and second frequency-dependent elements have different frequency dependencies, and wherein the frequency discriminator is sensitive to signals in a bandwidth between a lower frequency limit and an upper frequency limit, wherein the upper frequency limit is 1 GHz or 40 GHz.