Frequency discriminator
First Claim
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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, anda 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, andwherein 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.
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Abstract
A frequency discriminator comprising a 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 frequency-dependent element, such as low-pass filter, so as to provide a second signal. The frequency discriminator further comprises a circuit configured to compare the first and second signals and generate an instantaneous frequency signal in dependence thereon.
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Citations
39 Claims
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1. A frequency discriminator comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
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Specification