Patent US2719820A successfully refreshed from Google Patents.
US3792383A
Expired / Lapsed
US
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Hybrid strip transmission line circuitry and method of making same
Assignee: Motorola Solutions Inc
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Filing: 1971-06-21
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Granted: 1974-02-12
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Expires: 1991-06-21
Abstract
Abstract A stripline circuit using discrete and distributed circuit components is disclosed wherein the discrete members are fixed to one ground plane, the leads thereof extend through openings in the ground plane and attached dielectric board through a flexible distributed circuit carrier and are soldered to the strip circuit being carried by the flexible carrier. The covering (second) ground plane and attached dielectric board has an access opening on the opposite side of the circuit from the discrete components for enabling the soldered connection to be made. The access openings in the covering ground plane and attached dielectric member are of sufficient size to permit flexing of the flexible circuit carrier during differential thermal expansion of the leads and the dielectric members. The same is true for the other ground plane and attached dielectric member. Stress-free and crack-free solder connections are thus achieved, and the solder connections can be removed for servicing and the like of the discrete components even though the ground planes, dielectric boards and circuit carrier are bonded together.
Inventors
- 👤 T Knappenberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:33
CPC Classifications
H; H01; H01P; H01P3/00; H01P3/02; H01P3/08; H01P3/085; H01P3/088; H05; H05K; H05K1/00; H05K1/02; H05K1/0213; H05K1/0237; H05K1/0243; H05K1/18; H05K1/182; H05K2201/00; H05K2201/07; H05K2201/0707; H05K2201/0715; H05K2201/10; H05K2201/10007; H05K2201/10022; H05K2201/10166; H05K2201/10431; H05K2201/10439; H05K2201/10454; H05K2201/10613; H05K2201/10954; H05K2201/10969; H05K3/00; H05K3/0058; H05K3/0061; H05K3/30; H05K3/32; H05K3/34; H05K3/341; H05K3/3421; H05K3/3447; H05K3/46; H05K3/4688; H05K3/4691; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49016
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
275 words
A hybrid stripline circuit comprising, a first metallic ground plane having two sides, a first layer of dielectric material having two sides and being bonded at one side to one side of said first ground plane, a flexible dielectric microwave circuit carrier having two sides bonded at one side to the other side of said first layer of dielectric material, a microwave circuit bonded to the other side of said carrier, a second layer of dielectric material having two sides and being bonded at one side to the other side of said carrier, a second metallic ground plane having two sides and being bonded at one side to the other side of second layer of dielectric material, a hole through said first metallic ground plane, a hole through said first layer of dielectric material, a discrete circuit component fixed to the other side of said first ground plane, said discrete circuit component having a lead extending through the holes in said first ground plane and said first layer of dielectric material, said lead including an end, a hole in said second ground plane, a hole in said second layer of dielectric material, a connecting hole in said flexible carrier member and said microwave circuit, the end of said lead extending through said connecting hole and being soldered to said microwave circuit, the opening in said second ground plane and through said second layer of dielectric material being of such size as to enable said soldering, and the extent of said solder joint being less than size of the holes in said first and second dielectric layers whereby flexing of said flexible dielectric carrier is enabled.
Claim 2
Dependent Claim
275 words
A hybrid stripline circuit comprising, a first metallic ground plane having two sides, a first layer of dielectric material having two sides and being bonded at one side to one side of said first ground plane, a flexible dielectric microwave circuit carrier having two sides bonded at one side to the other side of said first layer of dielectric material, a microwave circuit bonded to the other side of said carrier, a second layer of dielectric material having two sides and being bonded at one side to the other side of said carrier, a second metallic ground plane having two sides and being bonded at one side to the other side of second layer of dielectric material, a hole through said first metallic ground plane, a hole through said first layer of dielectric material, a discrete circuit component fixed to the other side of said first ground plane, said discrete circuit component having a lead extending through the holes in said first ground plane and said first layer of dielectric material, said lead including an end, a hole in said second ground plane, a hole in said second layer of dielectric material, a connecting hole in said flexible carrier member and said microwave circuit, the end of said lead extending through said connecting hole and being soldered to said microwave circuit, the opening in said second ground plane and through said second layer of dielectric material being of such size as to enable said soldering, and the extent of said solder joint being less than size of the holes in said first and second dielectric layers whereby flexing of said flexible dielectric carrier is enabled.
Claim 3
Dependent Claim
181 words
In a hybrid stripline circuit having a pair of ground plane and attached dielectric layers in opposed relationship to each other with such dielectric layers facing each other and a strip circuit member between said facing dielectric layers, means for enabling the mounting of discrete components fixedly on the exterior of such stripline circuit on one side thereof and attaching the leads thereof to the circuit member from the other side of such stripline circuit in a stress-free and accessible manner comprising a flexible dielectric circuit carrier with said circuit formed thereon disposed between said facing dielectric layers, said circuit facing opposite to the side of attachment of said discrete components, opening means extending through each of said pair of ground plane and attached dielectric layers and terminating at said flexible circuit carrier, said openings being of sufficient size to receive said leads from one side and receive a soldering tool from the other side, a solder connection of said lead to the circuit on said flexible carrier, the extent of said solder connection being substantially less than said opening means.
Claim 4
Dependent Claim
181 words
In a hybrid stripline circuit having a pair of ground plane and attached dielectric layers in opposed relationship to each other with such dielectric layers facing each other and a strip circuit member between said facing dielectric layers, means for enabling the mounting of discrete components fixedly on the exterior of such stripline circuit on one side thereof and attaching the leads thereof to the circuit member from the other side of such stripline circuit in a stress-free and accessible manner comprising a flexible dielectric circuit carrier with said circuit formed thereon disposed between said facing dielectric layers, said circuit facing opposite to the side of attachment of said discrete components, opening means extending through each of said pair of ground plane and attached dielectric layers and terminating at said flexible circuit carrier, said openings being of sufficient size to receive said leads from one side and receive a soldering tool from the other side, a solder connection of said lead to the circuit on said flexible carrier, the extent of said solder connection being substantially less than said opening means.
Claim 5
Dependent Claim
23 words
The stripline circuit according to claim 2 wherein said ground planes and dielectric layers and said flexible dielectric circuit carriers are bonded together.
Claim 6
Dependent Claim
83 words
A hybrid stripline circuit comprising a pair of ground plane and attached dielectric layers in opposed relationship to each other such dielectric layers facing each other, a strip circuit member betWeen said facing dielectric layers, said dielectric layers and said circuit member being bonded to each other, at least one access opening in one of said pair of ground plane and dielectric layers for exposing said strip circuit member and a solder connection to said strip circuit member made through said access opening.
Claim 7
Dependent Claim
83 words
A hybrid stripline circuit comprising a pair of ground plane and attached dielectric layers in opposed relationship to each other such dielectric layers facing each other, a strip circuit member betWeen said facing dielectric layers, said dielectric layers and said circuit member being bonded to each other, at least one access opening in one of said pair of ground plane and dielectric layers for exposing said strip circuit member and a solder connection to said strip circuit member made through said access opening.
Claim 8
Dependent Claim
31 words
The stripline circuit according to claim 4 including a flexible dielectric circuit carrier to which said strip circuit member is bonded, and said circuit carrier and dielectric layers are bonded together.
Claim 9
Dependent Claim
119 words
The stripline circuit according to claim 5 wherein, the other one of said pair of ground plane and dielectric layers has a lead opening opposite the access opening in said first one of said pair of ground plane and dielectric layers, a discrete component is fixed to the ground plane of said other one of said pair of ground plane and dielectric layers, said discrete component includes a lead extending through said lead opening and into said access opening, said solder connection joins said lead to said strip circuit, and the lateral extent of said solder connection is substantially less than the extent of said access opening and said lead opening thereby permitting said flexible circuit carrier to flex.
Claim 10
Independent Claim
72 words
The method of making a hybrid stripline circuit comprising the steps of providing a flexible dielectric carrier with a strip circuit thereon, bonding said flexible carrier between a pair of ground plane and dielectric layers having registering openings on each side of flexible carrier, bonding discrete members on one side of such stripline circuit, and making discrete member lead connections to said strip circuit from the other side of said stripline circuit.
Claim 11
Independent Claim
72 words
The method of making a hybrid stripline circuit comprising the steps of providing a flexible dielectric carrier with a strip circuit thereon, bonding said flexible carrier between a pair of ground plane and dielectric layers having registering openings on each side of flexible carrier, bonding discrete members on one side of such stripline circuit, and making discrete member lead connections to said strip circuit from the other side of said stripline circuit.
Claim 12
Independent Claim
63 words
The method of making a hybrid stripline circuit comprising the steps of, flexibly supporting a flexible circuit carrier between two relatively rigid ground plane and dielectric insulating members, fixedly mounting a discrete member exteriorly to one of said rigid members and soldering leads to a strip circuit on said flexible circuit carrier through exterior access openings in the other of said rigid members.
Claim 13
Independent Claim
63 words
The method of making a hybrid stripline circuit comprising the steps of, flexibly supporting a flexible circuit carrier between two relatively rigid ground plane and dielectric insulating members, fixedly mounting a discrete member exteriorly to one of said rigid members and soldering leads to a strip circuit on said flexible circuit carrier through exterior access openings in the other of said rigid members.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-11 | 1977-08-13 | 1978-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-11 | 1981-08-13 | 1982-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-11 | 1985-08-13 | 1986-02-12 | $7700.00 | Window Closed / Lapsed |