http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113480303-B
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-3244 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-96 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-6567 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-3232 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-656 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-3227 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-3225 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-3224 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2235-3208 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B35-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B35-622 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B35-64 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B35-62605 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B35-44 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01B3-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B35-64 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B35-626 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B35-622 |
| filingDate | 2021-07-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2023-01-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2023-01-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | CN-113480303-B |
| titleOfInvention | A kind of aluminate-based low dielectric microwave dielectric ceramic and its preparation method |
| abstract | The invention discloses an aluminate-based low dielectric constant microwave dielectric ceramic and a preparation method thereof, wherein the main crystal phase of the microwave dielectric ceramic has a garnet crystal structure, and the specific chemical composition is (2+x)CaO‑0.5Ln 2 O 3 ‑(2‑y)ZrO 2 ‑(x+y)MO 2 ‑1.5Al 2 O 3 , Ln is Y, La, Lu, Gd or other lanthanides, M is Hf, Sn or Ti, 0 ≤x≤0.5, 0≤y≤2.0. The dielectric constant of microwave dielectric ceramics is 10.81~13.52, the quality factor is 72441GHz~121930GHz, and the temperature coefficient of resonance frequency is +0.50ppm/℃~‑35.48ppm/℃. In the preparation process, the ceramic material is pre-fired at 1300° C. for 5 hours and sintered at 1500° C. to 1600° C. for 10 hours. The microwave dielectric ceramic prepared in the present invention has the characteristics of low dielectric constant, high quality factor, and the temperature coefficient of resonance frequency can be adjusted to nearly zero, and is suitable for preparing microwave communication devices such as dielectric substrates, dielectric resonators, and dielectric antennas. |
| priorityDate | 2021-07-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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