| 摘要 |
PROBLEM TO BE SOLVED: To provide a frequency signal generation apparatus corresponding to various band groups. SOLUTION: A frequency signal generation apparatus includes: a control circuit for generating a frequency generation signal, assistance frequency select signal, a sign select signal and a dividing select signal; a reference frequency signal generator for generating a first frequency signal and generating a second frequency signal by dividing the first frequency signal; an assistance frequency signal generator adapted to generate a third frequency signal, generate fourth frequency signal and a sixth frequency signal by dividing the third frequency signal, and to generate a seventh frequency signal from the fourth frequency signal and the sixth frequency signal in response to the assistance frequency select signal; a mixer for selecting a sign of the seventh frequency signal in response to the sign select signal and generating an eighth frequency signal and a ninth frequency signal by mixing the seventh frequency signal and the second frequency signal; a switch adapted to output the eighth frequency signal in response to the dividing select signal and to switch to divide the ninth frequency signal; and a first divider connected to the switch, outputting a tenth frequency signal by dividing the ninth frequency signal. COPYRIGHT: (C)2011,JPO&INPIT |
