RF package
First Claim
1. A package comprising:
- a substrate including an upper surface ground plane connected to a lower surface ground plane by vias through the substrate;
a die located on the upper ground plane and including a die pad;
a transmission path including;
on the upper surface of the substrate, a bonding pad connected to a first transmission line itself connected to a transition pad and on the lower surface of the substrate, a second transmission line connected to the transition pad by a via through the substrate;
a wire bond extending from the bonding pad to the die pad;
a portion of the upper surface ground plane and the lower surface ground plane connected by vias defining opposing walls on either side of the transmission path for signal isolation; and
a low pass filter for compensating wire bond inductance, the filter including;
a first capacitance formed between the bonding pad and at least the lower surface ground plane, the wire bond inductance, and a second capacitance formed between the die pad and at least the upper surface ground plane.
3 Assignments
0 Petitions
Accused Products
Abstract
A novel package includes a substrate including an upper surface ground plane connected to a lower surface ground plane by vias through the substrate, a die located on the upper ground plane and including a die pad, a transmission path including, on the upper surface of the substrate, a bonding pad connected to a first transmission line itself connected to a transition pad, and on the lower surface of the substrate, a second transmission line connected to the transition pad by a via through the substrate. A wire bond extends from the bonding pad to the die pad. A portion of the upper surface ground plane and the lower surface ground plane are connected by vias defining opposing walls on either side of the transmission path for signal isolation. A low pass filter for compensating wire bond inductance includes: a first capacitance formed between the bonding pad and at least the lower surface ground plane, the wire bond inductance, and a second capacitance formed between the die pad and at least the upper surface ground plane.
62 Citations
19 Claims
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1. A package comprising:
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a substrate including an upper surface ground plane connected to a lower surface ground plane by vias through the substrate;
a die located on the upper ground plane and including a die pad;
a transmission path including;
on the upper surface of the substrate, a bonding pad connected to a first transmission line itself connected to a transition pad and on the lower surface of the substrate, a second transmission line connected to the transition pad by a via through the substrate;
a wire bond extending from the bonding pad to the die pad;
a portion of the upper surface ground plane and the lower surface ground plane connected by vias defining opposing walls on either side of the transmission path for signal isolation; and
a low pass filter for compensating wire bond inductance, the filter including;
a first capacitance formed between the bonding pad and at least the lower surface ground plane, the wire bond inductance, and a second capacitance formed between the die pad and at least the upper surface ground plane.
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2. A package comprising:
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a die located on a ground structure;
a transmission path including a bonding pad isolated from the ground structure;
a die pad on the die;
a wire bond extending between the die pad and the bonding pad; and
a low pass filter for compensating wire bond inductance, the filter including;
a first capacitance formed between the bonding pad and the ground structure, the wire bond inductance, and a second capacitance formed between the die pad and the ground structure wherein, for a given frequency requirement and return loss, the first and second capacitances are tailored to reduce the wire bond inductance. - View Dependent Claims (3, 4, 5, 6, 7, 8)
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9. A package comprising:
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a substrate including an upper surface ground plane connected to a lower surface ground plane by vias through the substrate;
a die located on the upper ground plane and including a die pad;
a transmission path including;
on the upper surface of the substrate, a bonding pad connected to a first transmission line itself connected to a transition pad and, on the lower surface of the substrate, a second transmission line connected to the transition pad by a via through the substrate;
a wire bond extending from the bonding pad to the die pad; and
a portion of the upper surface ground plane and the lower surface ground plane connected by vias defining opposing walls on either side of the transmission path for signal isolation. - View Dependent Claims (10, 11, 12)
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13. A package comprising:
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a substrate including an upper surface ground plane connected to a lower surface ground plane by vias through the substrate;
a die located on the upper ground plane and including a die pad;
a transmission path including;
on the upper surface of the substrate, a bonding pad connected to a first transmission line itself connected to a transition pad and, on the lower surface of the substrate, a second transmission line connected to the transition pad by a via through the substrate;
a wire bond extending from the bonding pad to the die pad;
a portion of the upper surface ground plane and the lower surface ground plane connected by vias defining opposing walls on either side of the transmission path for signal isolation;
the upper surface ground plane surrounding the bonding pad, the first transmission line, and the transition pad; and
the lower surface ground plane and the second transmission line terminating proximate an edge of the substrate to facilitate probing.
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14. A package comprising:
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a substrate including an upper surface ground plane electrically connected to a lower surface ground plane;
a transmission path including;
on the upper surface of the substrate, a bonding pad electrically connected to a first transmission line and, on the lower surface of the substrate, a second transmission line electrically connected to the first transmission line;
a portion of the upper surface ground plane and the lower surface ground plane defining structure on either side of the transmission path for signal isolation; and
the upper surface ground plane surrounding the bonding pad and the first transmission line.
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15. A package comprising:
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a substrate including an upper surface ground plane electrically connected to a lower surface ground plane;
a transmission path including;
on the upper surface of the substrate, a bonding pad electrically connected to a first transmission line and, on the lower surface of the substrate, a second transmission line electrically connected to the first transmission line;
a portion of the upper surface ground plane and the lower surface ground plane defining structure on either side of the transmission path for signal isolation; and
the lower surface ground plane and the second transmission line terminating proximate an edge of the substrate to facilitate probing.
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16. A package comprising:
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a substrate including an upper surface ground plane connected to a lower surface ground plane by vias through the substrate;
a die located on the upper ground plane and including a die pad;
a transmission path including;
on the upper surface of the substrate a bonding pad connected to a first transmission line itself connected to a transition pad and, on the lower surface of the substrate a second transmission line connected to the transition pad by a via through the substrate;
a wire bond extending from the bonding pad to the die pad; and
a low pass filter for compensating wire bond inductance, the filter including;
a first capacitance formed between the bonding pad and at least the lower surface ground plane, the wire bond inductance, and a second capacitance formed between the die pad and at least the upper surface ground plane. - View Dependent Claims (17)
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18. An RF package comprising:
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a die located on a ground structure;
a transmission path including a bonding pad isolated from the ground structure;
a die pad on the die;
a wire bond extending between the die pad and the bonding pad; and
the ground structure including opposing members on either side of the transmission path for signal isolation.
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19. An interconnect device for use between a bonding pad on a first plane and a die pad on a second plane, the device comprising:
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at least one wire extending from the bonding pad to the die pad;
the bonding pad connected to a transmission line co-planar therewith; and
the transmission line connected to a transition pad co-planar therewith.
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Specification