Telecommunications – Transmitter – With feedback of modulated output signal
Reexamination Certificate
2004-11-23
2009-06-23
Urban, Edward (Department: 2618)
Telecommunications
Transmitter
With feedback of modulated output signal
C455S114300, C455S063100, C455S067130, C455S295000, C375S296000, C375S297000, C330S149000
Reexamination Certificate
active
07551905
ABSTRACT:
A distortion compensation apparatus of the present invention is used in a transmitter that produces and outputs a second signal from a first signal. This apparatus comprises a delay unit for delaying a feedback signal obtained from by the second signal; and a delay control unit for determining a delay quantity of said delay means so that a timing difference between a reference signal obtained from the first signal and the feedback signal delayed by the delay unit is made small. The delay control unit limits the delay quantity within a predetermined limit value.
REFERENCES:
patent: 4276514 (1981-06-01), Huang
patent: 6038259 (2000-03-01), Nanya
patent: 6275685 (2001-08-01), Wessel et al.
patent: 6677820 (2004-01-01), Miyatani
patent: 2001/0005402 (2001-06-01), Nagatani et al.
patent: 2001/0048346 (2001-12-01), Matsuura et al.
patent: 2001/0051504 (2001-12-01), Kubo et al.
patent: 2002/0041209 (2002-04-01), Miyatani
patent: 2002/0097811 (2002-07-01), Kubo et al.
patent: 1 191 685 (2002-03-01), None
patent: 2001-189685 (2001-07-01), None
patent: 2001-345718 (2001-12-01), None
Fudaba Nobukazu
Hamada Hajime
Hayashi Hiroyuki
Ishikawa Hiroyoshi
Kubo Tokuro
Chen Junpeng
Fujitsu Limited
Katten Muchin & Rosenman LLP
Urban Edward
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