EP 1561280 A2 20050810 - RADIO-FREQUENCY DEVICE WITH NULL OR QUASI-NULL INTERMEDIATE FREQUENCY MINIMIZING INTERFERING FREQUENCY MODULATION APPLIED TO AN INTEGRATED LOCAL OSCILLATOR

Title (en)

RADIO-FREQUENCY DEVICE WITH NULL OR QUASI-NULL INTERMEDIATE FREQUENCY MINIMIZING INTERFERING FREQUENCY MODULATION APPLIED TO AN INTEGRATED LOCAL OSCILLATOR

Title (de)

HOCHFREQUENZEINRICHTUNG MIT NULL- ODER QUASI-NULL-ZWISCHENFREQUENZMINIMIERUNGS-INTERFERENZFREQUENZMODULATION IN ANWENDUNG AUF EINEN INTEGRIERTEN EMPFANGSOSZILLATOR

Title (fr)

DISPOSITIF RADIOFREQUENCE DU TYPE A FREQUENCE INTERMEDIARE NULLE OU QUASI-NULLE MINIMISANT LA MODULATION FREQUENTIELLE PARASITE APPLIQUEEE A UN OSCILLATEUR LOCAL INTEGRE

Publication

EP 1561280 A2 20050810 (FR)

Application

EP 03808753 A 20031008

Priority

FR 0302956 W 20031008
FR 0212743 A 20021014

Abstract (en)

[origin: FR2845840A1] A zero IF (Intermediate Frequency) radio has a single chip (PC) with main phase locked loop (PLL2) reference frequency from a lower frequency voltage controlled auxiliary phase locked loop (PLL1) and main loop reference frequency (SRFP) below the main oscillator frequency, ten times higher than the channel frequency spacing and separated by an integer multiple of the transmit / receive frequency (SRFA) from the main loop cut off frequency. Includes an Independent claim for the use of the component in a cellular mobile phone.

IPC 1-7

H03L 7/23; H04B 1/10

IPC 8 full level

H03L 7/23 (2006.01); H04B 1/30 (2006.01)

CPC (source: EP US)

H03L 7/23 (2013.01 - EP US); H04B 1/30 (2013.01 - EP US)

Citation (search report)

See references of WO 2004036750A2

Designated contracting state (EPC)

DE FR GB IT

DOCDB simple family (publication)

FR 2845840 A1 20040416; FR 2845840 B1 20050916; EP 1561280 A2 20050810; US 2006217077 A1 20060928; WO 2004036750 A2 20040429; WO 2004036750 A3 20040610

DOCDB simple family (application)

FR 0212743 A 20021014; EP 03808753 A 20031008; FR 0302956 W 20031008; US 53150103 A 20031008