http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2003527015-A
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01Q1-273 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G04G21-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01Q5-321 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G04R60-00 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01Q9-40 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G04G99-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G04G21-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01Q5-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01Q5-15 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01Q1-27 |
| filingDate | 2001-02-23^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 2003-09-09^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2003527015-A |
| titleOfInvention | Multi-frequency antenna for small volume equipment |
| abstract | SUMMARY OF THE INVENTION The present invention provides a first strip (3), whose length (L1) is tuned to a high frequency (f h ), and a length (L2) of an extension of the first strip. An antenna (1) consisting of a second strip (4). The sum of lengths L1 and L2 results in an antenna whose length L3 is tuned to low frequency (f b ). A resonant circuit (5) with an inductance (6) connected in parallel with the capacitor (7) is arranged between the first and second strips (3, 4). The values of the components are selected to resonate the resonant circuit at a high frequency (f h ). When the high frequency is active, the length of the antenna is reduced to the length of the first strip (L1). When the low frequency is active, the length of the antenna is extended to the sum of the lengths provided by the first and second strips (L3). The inductance (6) is a substantially straight narrow strip integrally formed with at least one of the strips (3), one end of which is coupled to the strip (8). |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2006090793-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2008160409-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7158083-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-4815432-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7046204-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-4661776-B2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2014075773-A |
| priorityDate | 2000-03-15^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
| Predicate | Subject |
|---|---|
| isDiscussedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/substance/SID419521973 http://rdf.ncbi.nlm.nih.gov/pubchem/compound/CID102317 |
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