Telecommunications – Transmitter – Having harmonic radiation suppression
Reexamination Certificate
2009-06-23
2011-12-06
Nguyen, Lee (Department: 2618)
Telecommunications
Transmitter
Having harmonic radiation suppression
C332S107000, C332S160000, C375S296000
Reexamination Certificate
active
08073408
ABSTRACT:
A semiconductor integrated circuit includes a first input terminal configured to input a baseband signal, a second input terminal configured to input a local oscillation signal, an output terminal configured to output a modulating signal, a first amplifier circuit configured to receive the baseband signal through the first input terminal and to output a first amplified signal of the baseband signal, a 2-multiplying circuit configured to receive the local oscillation signal through the second input terminal and to output a 2-multiplied signal of the local oscillation signal, an adder configured to add the 2-multiplied signal and the first amplified signal and to output an addition signal, a second amplifier circuit configured to receive the addition signal and to output a second amplified signal of the addition signal, and a mixer configured to multiply the second amplified signal and the local oscillation signal and to output the modulating signal to the output terminal.
REFERENCES:
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Japanese Office Action issued Feb. 15, 2011, in Patent Application No. 2008-163383 (with English-language translation).
A. Mirzaei et al., “A Low-Power WCDMA Transmitter with an Integrated Notch Filter”, Digest of Technical Papers, ISSCC 2008/ Session 10/ Cellular Transceivers/ 10.7, pp. 212-213 and continuation p. 608.
Deguchi Jun
Kokatsu Hideyuki
Miyashita Daisuke
Kabushiki Kaisha Toshiba
Nguyen Lee
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
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