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Advanced hybrid power amplifier design

  • US 6,208,210 B1
  • Filed: 04/07/1999
  • Issued: 03/27/2001
  • Est. Priority Date: 04/07/1999
  • Status: Expired due to Fees
First Claim
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1. A hybrid radio frequency (RF) power device comprising:

  • a flange;

    an arrangement of die blocks disposed about the flange, said arrangement of die blocks organized in a plurality of rows and a plurality columns, each of said die blocks having corresponding input and output connections;

    a substrate disposed between the flange and said arrangement of die blocks;

    an input pin attached to said flange;

    an input transmission line extending between said input pin and said arrangement of die blocks;

    a first link connecting a first die block via a first input connection to a second die block via a second input connection;

    a second link connecting a third die block via a third input connection to a fourth die block via a fourth input connection;

    a third link coupling said input transmission line to said first link;

    a fourth link coupling said input transmission line to said second link;

    an output pin attached to said flange opposite said input pin; and

    an output transmission line extending between corresponding output connections of said first, second, third and fourth die blocks and said output pin;

    wherein said first and second links have a length approximately one half the RF wavelength of the operating wavelength of the power device so that die blocks in a first column of said arrangement are substantially in phase with each other and approximately 180 degrees out of phase with die blocks in a neighboring column of die of said arrangement thereby causing die in the first column to switch ON together and increase the efficiency of the RF power devise.

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