Telecommunications – Receiver or analog modulated signal frequency converter – Local control of receiver operation
Reexamination Certificate
2006-12-26
2006-12-26
Vo, Nguyen T. (Department: 2618)
Telecommunications
Receiver or analog modulated signal frequency converter
Local control of receiver operation
C455S260000, C455S141000, C455S277100, C455S333000, C331S018000, C331S00100A, C331S002000
Reexamination Certificate
active
07155188
ABSTRACT:
Dispersing directions of oscillation frequency variable ranges of all voltage controlled oscillators provided in an integrated circuit are uniformed, and not only a range covering a frequency regardless of whether a dispersion occurs or not, but also a range covering the frequency only in a case where the dispersion occurs is used as the frequency variable range of the voltage controlled oscillator, and the frequency variable ranges of the voltage controlled oscillators are set so as to be successive with respect to each other, so that a small number of voltage controlled oscillators can cover a wide frequency variable range. Thus, the integrated circuit having voltage controlled oscillators therein is miniaturized.
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“A Fully Integrated Broadband Direct-Conversion Receiver for DBS Applications” (ISSCC 2000/Session 8/Wireless RX/TX/ Paper TA 8.2, Feb. 8, 2000, pp. 104, 105, 140, 141 and 417).
Amano Shinji
Isoda Hiroshi
Noboru Mitsuhiro
Birch & Stewart Kolasch & Birch, LLP
Nguyen Thuan T.
Sharp Kabushiki Kaisha
Vo Nguyen T.
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