Patent ID: 11923861
Assignee: QUALCOMM INCORPORATED
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 28:
29. A wireless communication device, comprising:
at least one antenna;
a transceiver coupled to the at least one antenna;
an integrated circuit (IC) coupled to the transceiver, wherein the IC includes one or more signal processing cores, and wherein at least one of the IC or the transceiver each comprises:
a first upper voltage rail;
a first lower voltage rail; and
a voltage controlled oscillator (VCO), comprising:
at least one second upper voltage rail;
at least one second lower voltage rail;
a ring oscillator (RO) including a set of N cascaded inverters arranged in a ring, wherein the set of N cascaded inverters are coupled between the at least one second upper voltage rail and the at least one second lower voltage rail, wherein N is a positive integer number;
at least one first frequency band select circuit coupled between the first upper voltage rail and the at least one second upper voltage rail, respectively;
at least one second frequency band select circuit coupled between the at least one second lower voltage rail and the first lower voltage rail, respectively;
at least one first VCO frequency control circuit coupled between the first upper voltage rail and the at least one second upper voltage rail, respectively; and
at least one second VCO frequency control circuit coupled between the at least one second lower voltage rail and the first lower voltage rail, respectively.