Method and system of vector signal generator with direct RF...

Details Method and system of vector signal generator with direct RF... Method and system of vector signal generator with direct RF...

2008-11-24

2010-11-09

Mis, David (Department: 2817)

Modulators

Phase shift keying modulator or quadrature amplitude modulator

C332S144000

Reexamination Certificate

active

07830217

ABSTRACT:
A vector signal generator with direct RF signal synthesis is disclosed. The vector signal generator comprises an RF signal synthesizer, a switch, and a memory. The RF signal synthesizer is configured for converting baseband IQ signals into a modulated digital RF signal. The RF signal synthesizer is connected to an I input, a Q input, a clock input, a control input, and an output, where the clock input is a clock input of the vector signal generator, the control input is a control input of the vector signal generator, and the output is an RF signal output of the vector signal generator. The switch is configured for selecting a source of IQ signals and is connected to an external I input, an external Q input, a stored signal I input, a stored signal Q input, the control input, an I output, and a Q output. The external I input and external Q input are external IQ inputs to the vector signal generator and the I output and the Q output are connected to the I input and the Q input of the RF signal synthesizer. The memory is configured for storing IQ signals samples, said memory being connected to the control input and having a stored I output, connected to the stored signal I input, and a stored Q output connected to the stored signal Q input.

REFERENCES:
patent: 6564349 (2003-05-01), Mitten et al.

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