US5262370A
Expired / Lapsed
US
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Dielectric ceramic compositions
Assignee: Skyworks Solutions Inc
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Filing: 1992-04-07
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Granted: 1993-11-16
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Expires: 2012-04-07
Abstract
Abstract Ceramic composition comprising oxides of the elements Ba, Ti, Zn, and Me where Me is Nb or Nb and Ta, the mole ratios of the elements relative to Ba being: 3.8≦Ti≦4.5 0.1≦Zn≦1.0 0.05≦Me≦0.3 and the composition containing at least one crystal structure of BaTi 4 O 9 and BaTi 9 O 20 . The ceramic compositions have an excellent combination of electrical characteristics including Q value at the frequencies of interest for dielectric resonators, the dielectric constant and the T f value and are well adapted for use as electrical components in equipment operating at microwave frequencies such cellular communications equipment.
Inventors
- 👤 Taki Negas
- 👤 Glenn J. Yeager
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:07
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/002; H01G4/018; H01G4/06; H01G4/08; H01G4/12; H01G4/1209; H01G4/1218; H01G4/1227; C; C04; C04B; C04B35/00; C04B35/01; C04B35/46; C04B35/462; C04B35/465; C04B35/468; C04B35/4686
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
32 words
A ceramic composition comprising oxides of the elements, Ba, Ti, Zn and Nb, said composition containing at least one of BaTi 4 O 9 and Ba 2 Ti 9 O 20 .
Claim 2
Dependent Claim
32 words
A ceramic composition comprising oxides of the elements, Ba, Ti, Zn and Nb, said composition containing at least one of BaTi 4 O 9 and Ba 2 Ti 9 O 20 .
Claim 3
Dependent Claim
51 words
A composition in accordance with claim 1 comprising from about 90 to 50 mole percent oxides of barium and titanium, about 1 to 50 mole percent oxides of zinc and about 0.1 to 10 mole percent oxides of niobium, the mole ratio of titanium to barium being from 3.8 to 4.5.
Claim 4
Dependent Claim
16 words
The composition in accordance with claim 2 further including about 0.001 to 0.1 mol percent manganese.
Claim 5
Dependent Claim
20 words
The composition in accordance with claim 3 wherein the mol ratio of titanium to barium is from 4 to 4.3.
Claim 6
Dependent Claim
20 words
The composition in accordance with claim 2 wherein the mol ratio of titanium to barium is from 4 to 4.3.
Claim 7
Dependent Claim
19 words
The composition in accordance with claim 5 wherein the mol percent of oxides of niobium is 2 to 7.
Claim 8
Dependent Claim
60 words
A composition in accordance with claim 1 wherein from about 90 to 50 mole percent of the contained elements are barium and titanium, about 1 to 50 mole percent of the contained elements is zinc and about 0.1 to 10 mole percent of the contained elements is niobium the, mol ratio of titanium to barium being from 4 to 4.5.
Claim 9
Dependent Claim
16 words
The composition in accordance with claim 7 further including about 0.001 to 0.1 mol percent manganese.
Claim 10
Dependent Claim
20 words
The composition in accordance with claim 8 wherein the mol ratio of titanium to barium is from 4 to 4.3.
Claim 11
Dependent Claim
20 words
The composition in accordance with claim 7 wherein the mol ratio of titanium to barium is from 4 to 4.3.
Claim 12
Dependent Claim
18 words
The composition in accordance with claim 5 wherein the mol percent of element niobium is 2 to 7.
Claim 13
Dependent Claim
57 words
A ceramic composition comprising oxides of the elements Ba, Ti, Zn, and Me, where Me is Nb or Nb and Ta, the mole ratios of the elements relative to Ba being: 3.8≦Ti ≦4.5 0.1≦Zn ≦1.0 0.05≦Me ≦0.3 and the composition contains at least one crystal structure of BaTi 4 O 9 and BaTi 9 O 20 .
Claim 14
Dependent Claim
57 words
A ceramic composition comprising oxides of the elements Ba, Ti, Zn, and Me, where Me is Nb or Nb and Ta, the mole ratios of the elements relative to Ba being: 3.8≦Ti ≦4.5 0.1≦Zn ≦1.0 0.05≦Me ≦0.3 and the composition contains at least one crystal structure of BaTi 4 O 9 and BaTi 9 O 20 .
Claim 15
Dependent Claim
19 words
A ceramic composition in accordance with claim 12 wherein the mole ratio of Ti is from 4 to 4.3.
Claim 16
Dependent Claim
19 words
A ceramic composition in accordance with claim 13 wherein the mole ratio of Zn is from 0.4 to 0.8.
Claim 17
Dependent Claim
27 words
A composition comprising oxides of Ba, Ti, Zn and Nb, said composition having a Q value of at least 25,000 at a frequency of about 900 MHz.
Claim 18
Dependent Claim
27 words
A composition comprising oxides of Ba, Ti, Zn and Nb, said composition having a Q value of at least 25,000 at a frequency of about 900 MHz.
Claim 19
Dependent Claim
29 words
A composition comprising oxides of Ba, Ti, Zn and Nb, the mole ratio of titanium to barium in said composition being in the range of from 3.8 to 4.5.
Claim 20
Dependent Claim
29 words
A composition comprising oxides of Ba, Ti, Zn and Nb, the mole ratio of titanium to barium in said composition being in the range of from 3.8 to 4.5.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 7.5 Years (Year 8) | 2000-11-15 | 2001-05-17 | 2001-11-16 | $3760.00 | Window Closed / Lapsed |
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