Invention Grant
US08058922B2 Switch with improved biasing 有权
切换具有改进的偏置

  • Patent Title: Switch with improved biasing
  • Patent Title (中): 切换具有改进的偏置
  • Application No.: US12623197
    Application Date: 2009-11-20
  • Publication No.: US08058922B2
    Publication Date: 2011-11-15
  • Inventor: Marco Cassia
  • Applicant: Marco Cassia
  • Applicant Address: US CA San Diego
  • Assignee: QUALCOMM, Incorporated
  • Current Assignee: QUALCOMM, Incorporated
  • Current Assignee Address: US CA San Diego
  • Agent Ramin Mobarhan
  • Main IPC: H03K3/01
  • IPC: H03K3/01
Switch with improved biasing
Abstract:
Switches with improved biasing and having better isolation and reliability are described. In an exemplary design, a switch is implemented with a set of transistors, a set of resistors, and an additional resistor. The set of transistors is coupled in a stacked configuration, receives an input signal, and provides an output signal. The set of resistors is coupled to the gates of the set of transistors. The additional resistor is coupled to the set of resistors and receives a control signal for the set of transistors. The resistors reduce signal loss through parasitic capacitances of the transistors when they are turned on. The resistors also help split the signal swing of the input signal approximately evenly across the transistors when they are turned off, which may improve reliability of the transistors. The switch may be used in a switchplexer, a power amplifier (PA) module, etc.
Public/Granted literature
Information query
Patent Agency Ranking
0/0