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Radio frequency integrated circuit

  • US 7,945,208 B2
  • Filed: 08/10/2007
  • Issued: 05/17/2011
  • Est. Priority Date: 08/14/2006
  • Status: Active Grant
First Claim
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1. A radio frequency integrated circuit (RFIC) for use in a device powered by a battery, the RFIC configured to receive a first voltage from a power management integrated circuit (PMIC) of the device, the RFIC comprising:

  • a radio frequency (RF) transceiver configured to perform an RF transmission and an RF reception;

    a direct current to direct current (DC-DC) converter configured to reduce the first voltage and output a second voltage lower than the first voltage; and

    a low dropout (LDO) regulator configured to receive the second voltage from the DC-DC converter and output a third voltage to the RF transceiver,wherein the ratio of the first voltage to the second voltage is at least 1/n, wherein n is an integer that is 2 or higher, and the third voltage is lower than the second voltage and is greater than zero.

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