http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2009077420-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5547f741b25666fc4ae5195cf71a979b |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04L25-061 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04B1-30 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04B1-0067 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04L27-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H03D3-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H03D7-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04L27-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04B1-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04L27-22 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04B1-30 |
| filingDate | 2008-11-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_73b38ebb9c0801be5c0fa001f8251af0 |
| publicationDate | 2009-04-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2009077420-A |
| titleOfInvention | Communication device, multiband receiving device, and receiving device |
| abstract | In a direct conversion type quadrature demodulator used in a multiband receiver, the influence on reception characteristics due to DC offset drift occurring at the time of band switching is reduced. A communication apparatus according to the present invention includes a plurality of quadrature demodulators 5 and 6 that perform quadrature demodulation of a plurality of band inputs, and a changeover switch 7 that selects one of the plurality of quadrature demodulators by a band switching control signal 15. In the multiband receiver including the high-pass filter 8 that receives the output of the changeover switch 7, the DC short switch 20 outputs the output of the BAND1 quadrature demodulator 5 and the output of the BAND2 quadrature demodulator 6 at the time of band switching. DC short-circuit each other for a predetermined period. [Selection] Figure 7 |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2013187037-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-10665911-B2 |
| priorityDate | 2005-01-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 34.