Third Order Distortion Build Up In A Multi-Channel Cascade (1973)

By R. Richard Bell and P. Rebeles, TRW Lawndale Laboratories and Semiconductor Operation

There have been several papers presented in the past dealing with nonlinear distortions in tube and transistor devices and amplifiers. Papers by Reynolds, Thomas , Akgun and Strutt discuss the various forms of distortion cancellations that can occur in devices. Nearly all of these papers have dealt with two dominant nonlinearities at the component level. Lambert has addressed the cancellation of Second order effects in CATV amplifiers and Lieberman in Systems. Because of the wide spread acceptance of amplifier hybrids we have frequently been called upon to aid in the explanation of distortion build-up behavior. What we aim to illustrate here are several unique cross-modulation and triple beat cancellations that may occur in actual systems. It will be demonstrated that these cancellations, or "poorly behaved nulls" may be extremely sensitive to any of the following operating conditions such as level, temperature, amplifier spacing, channel loading or channel spacing. Also we would like to propose a new test method which may give a better indication of a systems multi-channel capability.

By clicking the "Download Paper" button, you are agreeing to our terms and conditions.

Similar Papers

Elimination Of Cross-modulation In CATV Amplifiers
By R. Richard Bell and Ronald Clarke, TRW Electronic Components Divisions, Western Research Laboratories
1972
Amplifier Linearization By Complementary Pre Or Post Distortion
By A. Prochazka, P. Lancaster, and A. Neumann, Delta-Benco-Cascade Ltd.
1976
Multi-Channel AM Fiber Optic CATV Trunks - From Lab to Reality
By Carl J. McGrath, AT&T Bell Laboratories
1989
The Influence of Transistor and Circuit Design Philosophy on the Performance of CATV Amplifiers"
By G.G. Luettgenau and P. Rebeles, TRW Semiconductors
1975
Distortion Accumulation In Trunks
By Doug McEwen, CUC Broadcasting Umited & Norm Slater, Comlink Systems Inc. & Rezin Pidgeon, Scientific-Atlanta
1990
CATV System Design and Operation
By C. Bailey Neal, Archer S. Taylor, Donald W. Levenson, Orville D, Page, J.D. Cauldwell, P. Knight and E. R. Mertz, John Campbell and Joseph P. Gleason
1969
Cascading Of Inter-Modulation Distortion In Cable Television Systems
By Daniel Lieberman, GTE Sylvania Incorporated
1971
Lightwave Multi-channel AM-VSB Video Systems: Technology Trends and Limits
By T. E. Darcie, AT&T Bell Laboratories
1991
Feasibility Of Multi-channel VSB/AM Transmission On Fiber Optic Links
By Jack Koscinski, General Optronics Corporation
1987
Distortion Measurement Techniques For CATV
By W. A. Rheinfelder, R & D Anaconda-Astrodata Co.
1967
More Results >>