Phase shifted transmitter architecture for communication...

Details Phase shifted transmitter architecture for communication... Phase shifted transmitter architecture for communication...

2007-08-21

2007-08-21

Phu, Phuong (Department: 2611)

Pulse or digital communications

Transmitters

Antinoise or distortion

C375S296000, C375S295000

Reexamination Certificate

active

10300637

ABSTRACT:
The phase shifted (PS) transmitter provides substantially linear amplification from two non-linear amplifiers by decomposing the original signal into two constant envelope signals with varying phases. The generation of the two constant envelope signals does not require the use of a signal component separator (SCS) or a reference signal generator. The phase shifted transmitter generates directly the required constant envelope, varying phase signals. This eliminates stringent requirements on the circuitry and allows the use of non-linear highly efficient power amplifiers in the transmitter. When the two above mentioned signals are combined, they constructively and destructively interfere to re-form an amplified form of the original signal, which is to be transmitted via an antenna.

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