PLL circuit which quickly adjusts VCO bias voltages
In the path from the output of a charging pump to a control voltage terminal including the inside of a loop filter, voltage application means for applying a direct-current voltage of a predictable value to the control voltage terminal is given, resulting in a PLL circuit. In the PLL circuit, first,...
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| creator | UNO MASAO AKAGI HIDEMORI |
| description | In the path from the output of a charging pump to a control voltage terminal including the inside of a loop filter, voltage application means for applying a direct-current voltage of a predictable value to the control voltage terminal is given, resulting in a PLL circuit. In the PLL circuit, first, a fixed direct-current voltage is applied to the control voltage terminal from the voltage application means. The oscillation frequency of a voltage-controlled oscillator may be adjusted by making use of a trimming area as a oscillation frequency adjustment mechanism. Therefore, the oscillation frequency of the voltage-controlled oscillator can be quickly adjusted using fewer pieces of equipment. |
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In the PLL circuit, first, a fixed direct-current voltage is applied to the control voltage terminal from the voltage application means. The oscillation frequency of a voltage-controlled oscillator may be adjusted by making use of a trimming area as a oscillation frequency adjustment mechanism. Therefore, the oscillation frequency of the voltage-controlled oscillator can be quickly adjusted using fewer pieces of equipment.</description><edition>7</edition><language>eng</language><subject>AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATIONOF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES ; BASIC ELECTRONIC CIRCUITRY ; ELECTRICITY ; GENERATION OF NOISE BY SUCH CIRCUITS ; GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING,BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN ANON-SWITCHING MANNER</subject><creationdate>2001</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20011113&DB=EPODOC&CC=US&NR=6317004B1$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76289</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20011113&DB=EPODOC&CC=US&NR=6317004B1$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>UNO MASAO</creatorcontrib><creatorcontrib>AKAGI HIDEMORI</creatorcontrib><title>PLL circuit which quickly adjusts VCO bias voltages</title><description>In the path from the output of a charging pump to a control voltage terminal including the inside of a loop filter, voltage application means for applying a direct-current voltage of a predictable value to the control voltage terminal is given, resulting in a PLL circuit. In the PLL circuit, first, a fixed direct-current voltage is applied to the control voltage terminal from the voltage application means. The oscillation frequency of a voltage-controlled oscillator may be adjusted by making use of a trimming area as a oscillation frequency adjustment mechanism. 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In the PLL circuit, first, a fixed direct-current voltage is applied to the control voltage terminal from the voltage application means. The oscillation frequency of a voltage-controlled oscillator may be adjusted by making use of a trimming area as a oscillation frequency adjustment mechanism. Therefore, the oscillation frequency of the voltage-controlled oscillator can be quickly adjusted using fewer pieces of equipment.</abstract><edition>7</edition><oa>free_for_read</oa></addata></record> |
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| subjects | AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATIONOF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES BASIC ELECTRONIC CIRCUITRY ELECTRICITY GENERATION OF NOISE BY SUCH CIRCUITS GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING,BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN ANON-SWITCHING MANNER |
| title | PLL circuit which quickly adjusts VCO bias voltages |
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