Title :
Design of A Wideband Feedforward Distribution Amplifier
Author :
Prochazka, A. ; Neumann, R.
Author_Institution :
Delta-Benco-Cascade Ltd.
Abstract :
The design of a wideband feedforward amplifier in the frequency range 40-300 MHz is described. It is shown that the technology is now available to push the output level over 1 volt for a 12 channel NCTA crossmodulation ratio of -60 dB, or over 1/ 2 volt for a 35 channel NCTA crossmodulation ratio of -60 dB. The triple beat and second order distortion are typically -80 dB down. at the output level of 1 volt. This ultralinear feedforward amplifier is thus an immediate substitute for two distribution amplifiers of conventional design.
Keywords :
Broadband amplifiers; Cable TV; Directional couplers; Distributed amplifiers; Gain; Linearity; Linearization techniques; Nonlinear distortion; Power cables; Switched-mode power supply;
Journal_Title :
Consumer Electronics, IEEE Transactions on
DOI :
10.1109/TCE.1976.266832
