Patent ID: 8477873
Filing Date: 2013-07-02
Classification: H04L

Abstract:
1. A frequency signal generation unit, comprising: a control circuit adapted to generate a frequency generation signal, an assistance frequency select signal, a sign select signal, and a dividing select signal; a reference frequency signal generator adapted to generate a first frequency signal and generate a second frequency signal by dividing the generated first frequency signal; an assistance frequency signal generator adapted to generate a third frequency signal, generate fourth and fifth frequency signals by dividing the third frequency signal by a different division ratio, and generate a sixth frequency signal from the fourth and fifth frequency signals in response to the assistance frequency select signal; a mixer adapted to select a sign of the sixth frequency signal in response to the sign select signal and generate a seventh frequency signal and a eighth frequency signal by mixing the sixth frequency signal of the selected sign and the first frequency signal; a switch adapted to output the seventh frequency signal or the eight frequency signal in response to the dividing select signal; and a first divider adapted to output a ninth frequency signal by dividing the eighth frequency signal received from the switch, the first divider being coupled to the switch.