TRANSCEIVER APPLYING TECHNIQUE FOR SWITCHING OF PHASE LOCK LOOP (PLL) AND IMPROVEMENT OF PHASE NOISE

摘要

According to an embodiment of the present invention, provided is a transceiver which comprises: a reception radio frequency (RF) part processing a reception signal; a transmission RF part processing a transmission signal; and a phase lock loop (PLL) providing a reception frequency to the reception RF part, and providing a transmission frequency to the transmission RF part. The PLL can be controlled according to whether the reception RF part or the transmission RF part is activated. Also, according to an embodiment of the present invention, the transceiver includes quenching waveform generators (QWGs) controlling quenching waveforms of the RF parts individually corresponding to a plurality of antennas. The quenching waveforms can be generated by each of voltage controlled oscillators (VCOs) operating at the same frequency. Each of the QWGs controls the VCOs so that the quenching waveforms are not overlapped.;COPYRIGHT KIPO 2018