Device for producing a phase and amplitude modulated radio...

Details Device for producing a phase and amplitude modulated radio... Device for producing a phase and amplitude modulated radio...

2007-09-11

2007-09-11

Payne, David C. (Department: 2611)

Pulse or digital communications

Transmitters

Amplitude modulation

C375S295000, C332S103000, C332S144000

Reexamination Certificate

active

10240061

ABSTRACT:
The invention concerns a device for producing a phase and amplitude modulated signal (G) suitable for radio transmission via an antenna (30), based on the EER technique and means (20) for temporal clamping of a phase controlling signal (D) and an amplitude controlling signal (F) so that the phase modulating component is synchronized with the amplitude modulating component in the output signal (G).

REFERENCES:
patent: 3619503 (1971-11-01), Ragsdale
Mann S. et al. : “Increasing talk-time with efficient linear PA'S”—IEE seminar on tetra market and technology developments, Feb. 10, 2000, pp. 6/1-6/7—§ 4.3-§ 4.4-§ 5a.
Liu W. et al.: “Considerations on applying OFDM in a highly efficient power amplifier”—IEEE transactions on circuits and systems-II, analog and digital signal processing, vol. 46, No. 11, Nov. 1999, pp. 1329-1336—§ IV.B Fig. 6.
Wu J—T et al. : “TP 5.2: A 2V 100 MhZ CMOS vector modulator” IEEE international solid state circuits conference, vol. 40—Feb. 1997, pp. 80-81, 434, Fig. 1.

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