Transmitting method and transmitter apparatus

Details Transmitting method and transmitter apparatus Transmitting method and transmitter apparatus

2007-08-28

2007-08-28

Ghayour, Mohammed (Department: 2611)

Pulse or digital communications

Transmitters

Antinoise or distortion

C375S297000, C455S127100, C455S114200, C455S115100

Reexamination Certificate

active

10505084

ABSTRACT:
A transmitting method and a transmitter apparatus, which need no manual adjustment, are disclosed. A delay amount is automatically adjusted such that an out-of-band distortion component of a transmission signal is minimized, and a correct timing is produced by the method and the apparatus. In this transmitter apparatus, a first delay adjusts a control timing over a voltage that controls a power amplifier, and a distributor distributes an output from the power amplifier in order to feedback parts of the output. A distortion adjusting units calculating a distortion component of the transmission signal by using the signal fed back by the distributor, and adjusts automatically a delay amount of the first delay so as to minimize the distortion component. This structure allows eliminating manual adjustment, and obtaining high power-efficiency with fewer distortions.

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Raab, et al., Frederick H., Power Amplifiers and Transmitters for RF and Microwave, IEEE Transactions On Microwave Theory And Techniques, vol. 50, No. 3, Mar. 2002, pp. 814-826.

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