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1. WO2005062461 - METHOD AND APPARATUS FOR REDUCED NOISE BAND SWITCHING CIRCUITS

Publication Number WO/2005/062461
Publication Date 07.07.2005
International Application No. PCT/CA2004/002190
International Filing Date 22.12.2004
IPC
H03L 7/099 2006.01
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
LAUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
7Automatic control of frequency or phase; Synchronisation
06using a reference signal applied to a frequency- or phase-locked loop
08Details of the phase-locked loop
099concerning mainly the controlled oscillator of the loop
CPC
H03B 2200/0088
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
BGENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
2200Indexing scheme relating to details of oscillators covered by H03B
006Functional aspects of oscillators
0088Reduction of noise
H03B 5/04
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
BGENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
5Generation of oscillations using amplifier with regenerative feedback from output to input
02Details
04Modifications of generator to compensate for variations in physical values, e.g. power supply, load, temperature
H03B 5/1212
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
BGENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
5Generation of oscillations using amplifier with regenerative feedback from output to input
08with frequency-determining element comprising lumped inductance and capacitance
12active element in amplifier being semiconductor device
1206using multiple transistors for amplification
1212the amplifier comprising a pair of transistors, wherein an output terminal of each being connected to an input terminal of the other, e.g. a cross coupled pair
H03B 5/1228
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
BGENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
5Generation of oscillations using amplifier with regenerative feedback from output to input
08with frequency-determining element comprising lumped inductance and capacitance
12active element in amplifier being semiconductor device
1228the amplifier comprising one or more field effect transistors
H03B 5/124
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
BGENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
5Generation of oscillations using amplifier with regenerative feedback from output to input
08with frequency-determining element comprising lumped inductance and capacitance
12active element in amplifier being semiconductor device
1237comprising means for varying the frequency of the generator
124the means comprising a voltage dependent capacitance
H03B 5/1293
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
BGENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
5Generation of oscillations using amplifier with regenerative feedback from output to input
08with frequency-determining element comprising lumped inductance and capacitance
12active element in amplifier being semiconductor device
1237comprising means for varying the frequency of the generator
1293having means for achieving a desired tuning characteristic, e.g. linearising the frequency characteristic across the tuning voltage range
Applicants
  • SIRIFIC WIRELESS CORPORATION [--]/[--] (AllExceptUS)
  • YAVORSKYY, Volodymyr [UA]/[CA] (UsOnly)
  • MANKU, Tajinder [CA]/[CA] (UsOnly)
  • WEI, James [CA]/[CA] (UsOnly)
Inventors
  • YAVORSKYY, Volodymyr
  • MANKU, Tajinder
  • WEI, James
Agents
  • KINSMAN, Anne, L.
Priority Data
60/531,60923.12.2003US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD AND APPARATUS FOR REDUCED NOISE BAND SWITCHING CIRCUITS
(FR) PROCEDE ET APPAREIL DESTINES A DES CIRCUITS DE COMMUTATION A BANDE DE BRUIT REDUITE
Abstract
(EN)
A low-phase noise voltage control oscillator (VCO) comprising a voltage source for supplying control voltage to the VCO core; a phase lock loop, having an output connected to an input of the voltage source; a VCO core, including an amplifier circuit with noiseless biasing and a tank circuit with noiseless biasing of the varactors; having an output connected to an input of the phase lock loop; and an attenuator, located between the voltage source and the VCO core, for reducing phase noise from the voltage source to the VCO core.
(FR)
L'invention concerne un oscillateur à commande par tension (VCO) à faible bruit de phase comprenant une source de tension destinée à alimenter une tension de commande dans le noyau du VCO; une boucle à verrouillage de phase comprenant une sortie connectée à une entrée de la source de tension; un noyau du VCO comprenant un circuit d'amplificateur doté d'une polarisation exempte de bruit et un circuit de réservoir doté d'une polarisation exempte de bruit des varactors; comprenant une sortie connectée à une entrée de la boucle à verrouillage de phase; et un atténuateur situé entre la source de tension et le noyau du VCO, aux fins de réduction du bruit de phase de la source de tension au noyau du VCO.
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