# A Theoretical and Experimental Investigation of Tuned-Circuit Distortion in Frequency-Modulation Systems

@article{Jaffe1945ATA, title={A Theoretical and Experimental Investigation of Tuned-Circuit Distortion in Frequency-Modulation Systems}, author={D. L. Jaffe}, journal={Proceedings of the IRE}, year={1945}, volume={33}, pages={318-333} }

The problem of distortion introduced into the modulation intelligence by tuned circuits is considered both theoretically and experimentally. Complex equations result when the effect of the intelligence modulation is considered. These equations, while not readily amenable to Fourier analysis, disclose that the distortion parameters are ΔW/BW and λ/BW where, ΔW/2π = peak-frequency swing λ/2π = modulation frequency BW = bandwidth in kilocycles measured at 3 decibels down. Double-tuned circuits…

## 9 Citations

The Distortion of Frequency-Modulated Waves by Transmission Networks

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A general solution to the problem of calculating the distortion imposed on the instantaneous frequency of a frequency-modulated wave in passing through a transmission network is obtained by a direct…

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The distortion introduced into an angular modulated signal transmitted through a network or medium is analyzed using the sideband approach. An exact open-form solution of the output signal is…

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The distortion of FM (frequency-modulated) signals after being processed through time-invariant channels with nonlinear phase characteristic and/or fluctuating amplitude function is considered,…

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- Physics
- 1966

H. S. C. Abstract-The distortion of FM (frequency-modulated) signals after being processed through time-invariant channels with non- linear phase characteristic and/or fluctuating amplitude function…

The distortion produced when frequency-modulated signals pass through certain networks

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- 1963

Frequency-modulated signals are distorted when passed through selective networks, but theoretical attempts to predict the distortion have not been completely successful. The paper presents the…

The Solution of Steady-State Problems in FM

- Computer Science, MathematicsProceedings of the IRE
- 1949

A practical method of solving steady-state FM problems can be established if the range of approximation of the network function coincides with the nonnegligible part of the spectrum of the input wave, and an orthogonal polynomial is chosen as the approximating function.

A Microwave Relay System

- PhysicsProceedings of the IRE
- 1946

A method of double-frequency modulation suitable for long-distance transmission of multichannel signals by means of radio-relay stations and an experimental circuit between Philadelphia and New York is described and the results are given.

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