| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_36d1d9c59848bff6ad5f55923d1290f5 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H03C3-0925
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H03C3-0941
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H03L7-07
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H03L7-1976
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H03C3-0933 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04B1-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H03L7-183
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H03L7-23
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H03L7-197
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04B1-30
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04B1-3822
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H03L7-08
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H04B1-40
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H03L7-185 |
| filingDate |
2006-03-23^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ddf472db14bb932b7d0e05fb6b227ad8
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_06ed49e673d19462709bd3c315f891af |
| publicationDate |
2007-10-04^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
JP-2007259122-A |
| titleOfInvention |
Semiconductor integrated circuit for communication |
| abstract |
Leakage to the vicinity of an oscillation output signal of an RF transmission voltage controlled oscillator TXVCO due to a harmonic component of an oscillation output signal of a DCXO generated when level conversion of an oscillation output signal of a reference frequency oscillator DCXO is performed by a level converter Lev_Conv To reduce the impact of A level converter Lev_Conv converts a level of an oscillation output signal of a DCXO, and supplies the level conversion signal to a phase comparator PDC of a PLL / fractional synthesizer Frct_Synth that controls the oscillation frequency of an RF transmission voltage controlled oscillator TXVCO. . The Lev_Conv includes a self-bias voltage amplifier Self_Bias_Volt_Amp that amplifies the reference frequency signal of the reference frequency oscillator DCXO. The self-bias voltage amplifier includes a coupling capacitor C1, an amplification transistor Qn5, a load Qp5, and a bias element R1, and suppresses fluctuations in the level of harmonic components even when the external power supply voltage Vdd_ext varies. [Selection] Figure 10 |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2011515046-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/CN-113517938-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2011514079-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-9287886-B2 |
| priorityDate |
2006-03-23^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |