Transceiver with improved techniques for switching and phase noise of the phase-locked loop

摘要

Transceiver of the present invention includes a reception RF unit for processing the received signals, and provides the transmission RF section for processing transmit signals, the reception frequency to the RF reception unit, a phase locked loop that provides a transmission frequency to the transmission RF section ( includes a PLL), a phase locked loop is controlled depending on whether the reception RF unit or the RF transmission unit is turned on. Also, the transceiver includes an oscillation control signal generator for generating an oscillation control signal of the RF units corresponding to the plurality of antennas, the oscillation control signal is respectively generated for the voltage controlled oscillator operating at the same frequency, the oscillation control signal generator for controlling the voltage controlled oscillator as an oscillation control signal do not overlap. .BACKGROUND