×

High-efficiency modulating RF amplifier

  • US 6,636,112 B1
  • Filed: 08/10/2000
  • Issued: 10/21/2003
  • Est. Priority Date: 07/29/1999
  • Status: Expired due to Term
First Claim
Patent Images

1. A variable output RF power amplifier comprising:

  • voltage regulator means comprising a first switch-mode converter stage and a second linear regulator stage for producing a specified voltage within a range of voltages in accordance with a control signal for performing at least one of level control, burst control, and modulation; and

    a power amplifier including a final amplification stage having the specified voltage as a supply voltage and having a drive signal causing the final amplification stage to be driven repeatedly between two states, a hard-on state and a hard-off state, without operating the amplifier in a linear operating region for an appreciable percentage of time;

    wherein the amplifier is controlled without continuous or frequent feedback adjustment.

View all claims
  • 5 Assignments
Timeline View
Assignment View
    ×
    ×