| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_72706c59aa36ea1d17991ff72dafaa2a |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H03D2200-0025
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H03D2200-0029
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H03D7-165
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H03D2200-005 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H03D1-2245
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H04B1-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H03D3-008 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H03D7-16 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04B1-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H03D1-22
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04B1-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H03D3-00 |
| filingDate |
1992-01-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c309b57734341eaae3ed73b25ae387b0 |
| publicationDate |
1994-08-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
JP-H06224798-A |
| titleOfInvention |
Phase and gain error control scheme in direct conversion receiver |
| abstract |
(57) [Abstract] [Purpose] I, Q which are quadrature and a function of phase angle θ A gain and phase error detection control system in a direct conversion receiver having a pair of signal channels carrying baseband signal components. [Structure] The system 100 includes sin (2θ) and co It operates by generating I'and Q'signals corresponding to s (2θ). The I'and Q'signals are then normalized and filtered with respect to signal amplitude 110, 111 to produce DC I and DC Q signals corresponding to their DC components. D It has been found that the C I and DC Q signals are separately correlated with gain and phase error respectively, and it is necessary to adjust the original I and Q baseband signal components to correct such errors that exist between them. used. |
| priorityDate |
1991-01-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |