Advanced hybrid power amplifier design
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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Abstract
A hybrid radio frequency (RF) power device is provided which comprises: a flange (10) and an arrangement of die blocks (30) disposed about the flange (10), where the arrangement of die blocks (30) has die blocks (30a-30d) organized in a plurality of rows and a plurality columns, where the device may further comprise a substrate (15) disposed between the flange (10) and the arrangement of die blocks (30), and a first die block (30a) connected to a second die block (30b) by a conductor (42c) having a length of half a wavelength.
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Citations
9 Claims
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1. A hybrid radio frequency (RF) power device comprising:
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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. - View Dependent Claims (2, 3, 4, 5)
a portion of said input transmission line lies generally between a row and a first perimeter of said substrate; and
a portion of said input transmission line lies generally between a second row and a second perimeter of said substrate.
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4. The device of claim 1 wherein the input transmission line is a micro strip transmission line.
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5. The device of claim 1 wherein:
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the plurality of rows comprises at least a first row and a second row; and
the plurality of columns comprises at least a first column, a second column, and a third column.
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6. A hybrid radio frequency (RF) power device comprising:
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a flange; and
a plurality of die predisposed about the flange and arranged into two rows and three columns, each of the die including input connections and output connections;
a substrate disposed between the flange and the die;
an input pin coupled to the flange and adapted for carrying a into the power device;
an input micro strip transmission line for connecting the input pill to the input connections of said die;
an output pin for carrying a signal from the power device;
an output micro strip transmission line for connecting the output pin to the output connections of the die; and
links coupling successive input connections of die in neighboring columns, the length of said links being approximately one-half wavelength of the RF operating wavelength of the power device so that die blocks in columns 1 and 3 are in phase and 180 degrees out-of-phase with die blocks in column 2 thereby increasing the efficiency of the RF power device. - View Dependent Claims (7, 8, 9)
the plurality of rows comprises a first row and a second row;
the plurality of columns comprises a first column and a second column; and
the arrangement of die comprises;
a first die located in the first row and the first column, said first die having a first input connection and a first output connection;
a second die located in the first row and the second column, said second die having a second input connection and a second output connection;
a third die located in the second row and the first column, said third die having a third input connection and a third output connection; and
a fourth die located in the second row and the second column, said fourth die having a fourth input connection and a fourth output connection.
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9. The device of claim 8 wherein the input microstrip transmission line comprises:
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a first link connecting a first input connection of a first die to a second input connection of a second die, the first link having a length of approximately one half of a wavelength of the RF power device operating wavelength; and
a second link connecting a third input connection of a third die to a fourth input connection of a fourth die, the second link having a length of approximately one half of a wavelength of the RF power device operating wavelength.
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Specification