×

High frequency switch and mobile communication equipment

  • US 6,586,786 B2
  • Filed: 12/27/2001
  • Issued: 07/01/2003
  • Est. Priority Date: 12/27/2000
  • Status: Expired due to Term
First Claim
Patent Images

1. A high frequency switch, comprising:

  • a transmitting terminal;

    a receiving terminal;

    an antenna terminal;

    a first diode having an anode electrically connected to said transmitting terminal and a cathode electrically connected to said antenna terminal;

    a second diode having an anode connected through a transmission line of ¼

    wavelength to the antenna terminal which is electrically connected to said receiving terminal, and having the side of a cathode grounded; and

    a control terminal provided to a node between said transmitting terminal and said first anode, wherein said first and second diodes have a tradeoff relationship between ON resistance thereof and capacitance between said anode and said cathode, and the ON resistance of the first diode is lower than the ON resistance of the second diode, and the capacitance of the second diode in the OFF state is smaller than the capacitance of the first diode in the OFF state.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×