High frequency monolithic microwave integrated circuit connection
View Patent ↗An apparatus having a bonding pad and a conductor is disclosed. The bonding pad may be formed in a conductive layer of an integrated circuit. The bonding pad generally has (i) a bond region, (ii) an interface edge sized to match a transmission line and (iii) a tapered region between the bond region and the interface edge. The interface edge may be narrower than the bond region. The tapered region generally has a non-rectangular shape that spans from the bond region to the interface edge. The conductor may be bonded to the bond region. The conductor is generally configured to exchange a signal with the bond region. The signal may be in a microwave frequency range.
1. An apparatus comprising:
a bonding pad formed in a conductive layer of an integrated circuit, said bonding pad having (i) a bond region, (ii) an interface edge sized to match a transmission line and (iii) a tapered region between said bond region and said interface edge, wherein (a) said interface edge is narrower than said bond region and (b) said tapered region has a non-rectangular shape that spans from said bond region to said interface edge; and
a conductor bonded to said bond region, wherein (i) said conductor is configured to exchange a signal with said bond region and (ii) said signal is in a microwave frequency range.
2. The apparatus according to claim 1 , wherein said signal is in a frequency range of approximately 10 gigahertz to approximately 300 gigahertz.
3. The apparatus according to claim 1 , further comprising a transmission line formed in said conductive layer and connected to said interface edge.
4. The apparatus according to claim 1 , further comprising a stub region on a device separate from said integrated circuit.
5. The apparatus according to claim 4 , wherein said conductor comprises a plurality of bond wires that connect said bond region to said stub region.
6. The apparatus according to claim 4 , wherein said conductor comprises a single bond ribbon that connects said bond region to said stub region.
7. The apparatus according to claim 1 , wherein (i) an outer edge of said tapered region forms an angle relative to a perpendicular to said interface edge and (ii) said angle ranges from approximately 30 degrees to approximately 45 degrees.
8. The apparatus according to claim 1 , wherein said bonding pad has six sides in a plane parallel to a top surface of said integrated circuit.
9. The apparatus according to claim 1 , wherein said bonding pad has at least one of (i) a concave curved shape in said tapered region, (ii) a convex curved shape in said tapered region, (iii) multiple sloped lines in said tapered region, (iv) a notch in said bond region, (v) a Y shape and (vi) a triangular shape.
10. A method for creating a monolithic microwave integrated circuit connection, comprising the steps of:
(A) forming a bonding pad in a conductive layer of said integrated circuit, said bonding pad having (i) a bond region, (ii) an interface edge sized to match a transmission line and (iii) a tapered region between said bond region and said interface edge, wherein (a) said interface edge is narrower than said bond region and (b) said tapered region has a non-rectangular shape that spans from said bond region to said interface edge; and
(B) bonding a conductor to said bond region, wherein (i) said conductor is configured to exchange a signal with said bond region and (ii) said signal is in a microwave frequency range.
11. The method according to claim 10 , wherein said signal is in a frequency range of approximately 10 gigahertz to approximately 300 gigahertz.
12. The method according to claim 10 , further comprising the step of:
forming a transmission line in said conductive layer, said transmission line connecting to said interface edge.
13. The method according to claim 10 , further comprising the step of:
forming a stub region on a device separate from said integrated circuit.
14. The method according to claim 13 , wherein said conductor comprises a plurality of bond wires that connect said bond region to said stub region.
15. The method according to claim 13 , wherein said conductor comprises a single bond ribbon that connects said bond region to said stub region.
16. The method according to claim 10 , wherein (i) an outer edge of said tapered region forms an angle relative to a perpendicular to said interface edge and (ii) said angle ranges from approximately 30 degrees to approximately 45 degrees.
17. The method according to claim 10 , wherein said bonding pad has six sides in a plane parallel to a top surface of said integrated circuit.
18. The method according to claim 10 , wherein said bonding pad has at least one of (i) a concave curved shape in said tapered region, (ii) a convex curved shape in said tapered region, (iii) multiple sloped lines in said tapered region, (iv) a notch in said bond region, (v) a Y shape and (vi) a triangular shape.
19. An apparatus comprising:
means for bonding formed in a conductive layer of an integrated circuit, said means for bonding having (i) a bond region, (ii) an interface edge sized to match a transmission line and (iii) a tapered region between said bond region and said interface edge, wherein (a) said interface edge is narrower than said bond region and (b) said tapered region has a non-rectangular shape that spans from said bond region to said interface edge; and
means for conducting connected to said bond region, wherein (i) said means for conducting is configured to exchange a signal with said bond region and (ii) said signal is in a microwave frequency range.