公开(公告)号：US20240333269A1

公开(公告)日：2024-10-03

申请号：US18581462

申请日：2024-02-20

申请人： Qorvo US, Inc.

发明人： Mohamed Bouhamame

IPC分类号： H03K5/00 ,  H04B1/7163

CPC分类号： H03K5/00006 ,  H04B1/71635

摘要： The present disclosure relates to a frequency synthesizer capable of generating a full spectrum for ultra-wideband applications by utilizing a single voltage-controlled oscillator (VCO). The disclosed frequency synthesizer includes a phase-frequency detector (PFD), a charge pump (CP), a VCO, a feedback divider, and a divider bank. The PFD, the CP, the VCO, and the feedback divider are coupled in series in a closed loop, while the divider bank follows the VCO and is not included in the closed loop. Herein, the VCO has a tuning range less than 35%. The divider bank includes two or more divider branches parallel to each other, each of which is configured to provide a different division ratio. An oscillating spectrum of the VCO and division ratios of the two or more divider branches are selected such that the divider bank is capable of providing a continuous spectrum with at least a 64% frequency coverage.