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1. WO2020113953 - VOLTAGE CONTROLLED OSCILLATOR PULLING REDUCTION

Publication Number WO/2020/113953
Publication Date 11.06.2020
International Application No. PCT/CN2019/094607
International Filing Date 03.07.2019
IPC
H04B 1/04 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details of transmission systems, not covered by a single one of groups H04B3/-H04B13/123; Details of transmission systems not characterised by the medium used for transmission
02Transmitters
04Circuits
H03L 7/00 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
CPC
H03B 21/01
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
21Generation of oscillations by combining unmodulated signals of different frequencies
01by beating unmodulated signals of different frequencies
H03B 5/08
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
H03B 5/1209
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
1209the amplifier having two current paths operating in a differential manner and a current source or degeneration circuit in common to both paths, e.g. a long-tailed 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
H03L 7/089
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
085concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
089the phase or frequency detector generating up-down pulses
H03L 7/099
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
Applicants
  • SHENZHEN GOODIX TECHNOLOGY CO., LTD. [CN]/[CN]
Inventors
  • EMIRA, Ahmed
  • HUSSIEN, Faisal
Agents
  • LEADER PATENT & TRADEMARK FIRM
Priority Data
16/214,03808.12.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) VOLTAGE CONTROLLED OSCILLATOR PULLING REDUCTION
(FR) RÉDUCTION D’ENTRAÎNEMENT D'OSCILLATEUR COMMANDÉ PAR TENSION
Abstract
(EN)
Techniques are described for reducing frequency pulling in voltage-controlled oscillator (VCO) circuits. Some embodiments operate in context of a transmitter having a VCO and a power amplifier (PA), where resonant components of the VCO are impacted by magnetically coupled feedback from resonant components of the PA. The VCO and PA are coupled via a set of signal path components that cause signal path delay, such that the feedback signal is phase-delayed with respect to the signal generated by the VCO. A coupling delay matching system is used to introduce additional delay, thereby further phase-shifting the feedback signal to an integer multiple of the oscillation period of the VCO signal; thereby reducing frequency pulling of the VCO.
(FR)
La présente invention concerne des techniques de réduction d'entraînement de fréquence dans des circuits d'oscillateur commandé par tension (VCO). Certains modes de réalisation fonctionnent dans le contexte d'un émetteur ayant un VCO et un amplificateur de puissance (PA), où des composantes résonnantes du VCO sont impactées par une rétroaction couplée magnétiquement des composantes résonnantes du PA. Le VCO et le PA sont couplés par l'intermédiaire d'un ensemble de composantes de trajet de signal qui provoquent un retard de trajet de signal, de telle sorte que le signal de rétroaction est retardé en phase par rapport au signal généré par le VCO. Un système d'adaptation de retard de couplage est utilisé pour introduire un retard supplémentaire, permettant ainsi un déphasage supplémentaire du signal de rétroaction à un multiple entier de la période d'oscillation du signal VCO ; ce qui permet de réduire l'entraînement de fréquence du VCO.
Also published as
CN201980001563.3
EP2019765962
Latest bibliographic data on file with the International Bureau