Method and apparatus for reducing the peak envelope voltage of a

Details Method and apparatus for reducing the peak envelope voltage of a Method and apparatus for reducing the peak envelope voltage of a

1990-09-26

1993-04-06

Eisenzopf, Reinhard J.

Telecommunications

Transmitter

Diversity

455103, 375 40, 375 60, H04B 706

Patent

active

052010716

ABSTRACT:
The average RF power output of an independent sideband diversity radio transmitter, modulated by a multiple tone data signal, is increased while the RF output peak envelope voltage is held constant. For diversity operation the same information, as a combination of the data tones, is applied to both the upper and lower sideband channels of the RF translator. Adding predetermined phase shifts between the upper and lower sideband audio tone pairs results in a reduced peak envelope voltage at the composite RF output. The final RF amplifier gain can then be increased resulting in a higher average RF power output.

REFERENCES:
patent: 4654608 (1987-03-01), Minarik et al.

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