Patent US5157364A successfully refreshed from Google Patents.
US5157364A
Expired / Lapsed
US
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Airline transmission structures in low temperature co-fired ceramic
Assignee: OL Security LLC
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Filing: 1991-05-22
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Granted: 1992-10-20
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Expires: 2011-05-22
Abstract
Abstract An airline transmission structure in a low temperature co-fired ceramic ("LTCC"). A cavity is made within the LTCC structure. Ground planes surround the cavity. Electronic processing circuitry, such as an airline filter, is suspended within the cavity. Transmission lines are provided to connect the electronic circuitry to the electronic signals (typically microwave) which require processing. Full integration of the airline filter with other electronic circuitry in a single LTCC package is also shown.
Inventors
- 👤 Ramona G. Pond
- 👤 Louis W. Hendrick
- 👤 Craig K. Shoda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:22
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/20; H01P1/201; H01P1/203; H01P1/20327; H01P1/20336; H01P1/20354; H01P1/20363
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
66 words
An airline filter in a low temperature cofired ceramic for filtering electronic signals comprising: a. a low temperature co-fired ceramic structure; b. a cavity within said ceramic structure; c. at least one ground plane in proximity of said cavity and affixed to said ceramic structure; d. an airline filter suspended within said cavity; and e. connection means for connecting the electronic signals to said airline filter.
Claim 2
Dependent Claim
66 words
An airline filter in a low temperature cofired ceramic for filtering electronic signals comprising: a. a low temperature co-fired ceramic structure; b. a cavity within said ceramic structure; c. at least one ground plane in proximity of said cavity and affixed to said ceramic structure; d. an airline filter suspended within said cavity; and e. connection means for connecting the electronic signals to said airline filter.
Claim 3
Dependent Claim
16 words
The airline filter of claim 1 wherein said filter includes a template of a combline filter.
Claim 4
Dependent Claim
18 words
The airline filter of claim 1 wherein said filter includes an element supported on a low-loss dielectric substrate.
Claim 5
Dependent Claim
25 words
The airline filter of claim 1 wherein said cavity includes a shelf to support said filter and wherein said filter is affixed to said shelf.
Claim 6
Dependent Claim
22 words
The airline filter of claim 4 wherein said filter includes a plurality of resonating stubs affixed at each end to said shelf.
Claim 7
Dependent Claim
14 words
The airline filter of claim 1 including two ground planes which surround said cavity.
Claim 8
Dependent Claim
50 words
The airline filter of claim 6 wherein said ceramic structure has a bottom and a top cover having an underneath side, wherein one of said ground planes includes a metallic surface affixed to said bottom, and wherein said other ground plane includes a metallic surface affixed to said underneath side.
Claim 9
Dependent Claim
15 words
The airline filter of claim 1 wherein said cavity is fully surrounded by metallic surfaces.
Claim 10
Dependent Claim
57 words
The airline filter of claim 1 wherein said connection means includes: a. a first microstrip affixed to said ceramic structure for connection with the electronic signals; b. a second microstrip affixed to said ceramic structure and connected to said filter; and c. a stripline contained within said ceramic structure and connected between said first and second microstrip.
Claim 11
Dependent Claim
66 words
An airline structure in a low temperature cofired ceramic for processing microwave signals comprising: a. a low temperature co-fired ceramic structure; b. a cavity within said ceramic structure; c. at least one ground plane in proximity of said cavity and affixed to said ceramic structure; d. electronic processing circuitry suspended within said cavity; and e. connection means for connecting the microwave signals to said processing circuitry.
Claim 12
Dependent Claim
66 words
An airline structure in a low temperature cofired ceramic for processing microwave signals comprising: a. a low temperature co-fired ceramic structure; b. a cavity within said ceramic structure; c. at least one ground plane in proximity of said cavity and affixed to said ceramic structure; d. electronic processing circuitry suspended within said cavity; and e. connection means for connecting the microwave signals to said processing circuitry.
Claim 13
Dependent Claim
104 words
A low temperature co-fired ceramic structure for processing microwave signals comprising: a. a low temperature co-fired ceramic structure; b. a cavity within said ceramic structure; c. at least one ground plane in proximity to said cavity and affixed to said ceramic structure; d. first processing circuitry suspended within said cavity for processing the microwave signals; e. second processing circuitry contained within said ceramic structure, but not within said cavity, for processing signals; said second processing circuitry performing a function which is related to the function performed by said first processing circuitry; and f. connection means for electrically interconnecting said first and second processing circuitry.
Claim 14
Dependent Claim
104 words
A low temperature co-fired ceramic structure for processing microwave signals comprising: a. a low temperature co-fired ceramic structure; b. a cavity within said ceramic structure; c. at least one ground plane in proximity to said cavity and affixed to said ceramic structure; d. first processing circuitry suspended within said cavity for processing the microwave signals; e. second processing circuitry contained within said ceramic structure, but not within said cavity, for processing signals; said second processing circuitry performing a function which is related to the function performed by said first processing circuitry; and f. connection means for electrically interconnecting said first and second processing circuitry.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-10-20 | 1996-04-20 | 1996-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-10-20 | 2000-04-20 | 2000-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-10-20 | 2004-04-20 | 2004-10-20 | $7700.00 | Window Closed / Lapsed |