Title:
CIRCUIT ARRANGEMENT PROVIDED WITH A PHASE-LOCKED LOOP AND TRANSMITTER-RECEIVER WITH SAID CIRCUIT ARRANGEMENT
Document Type and Number:
WIPO Patent Application WO2004004267
Kind Code:
A3
Abstract:
The invention relates to a circuit arrangement provided with a phase locked loop (1), which can be used particularly as a mobile-radio transmitter. The reference frequency of the PLL (1) provided with the source (3) is multiplied by a multiplier (10) and is down-mixed on an intermediate frequency plane in a step-down-controller (9) with the output signal of the PLL, and evaluated in such a way that a modulator (13), which is connected to the input of oscillator (6), can be adjusted. Preferably, the inventive principle can be used advantageously with two-point modulators to provide economical, integratable mobile radio transmitters exhibiting good noise characteristics.
Inventors:
CONVENT THOMAS (DE)
HAMMES MARKUS (DE)
HANKE ANDRE (DE)
LI PUMA GIUSEPPE (DE)
MEVISSEN WALTER (DE)
HAMMES MARKUS (DE)
HANKE ANDRE (DE)
LI PUMA GIUSEPPE (DE)
MEVISSEN WALTER (DE)
Application Number:
PCT/DE2003/002118
Publication Date:
April 29, 2004
Filing Date:
June 25, 2003
Export Citation:
Assignee:
INFINEON TECHNOLOGIES AG (DE)
CONVENT THOMAS (DE)
HAMMES MARKUS (DE)
HANKE ANDRE (DE)
LI PUMA GIUSEPPE (DE)
MEVISSEN WALTER (DE)
CONVENT THOMAS (DE)
HAMMES MARKUS (DE)
HANKE ANDRE (DE)
LI PUMA GIUSEPPE (DE)
MEVISSEN WALTER (DE)
International Classes:
H03C3/09; (IPC1-7): H03C3/09
Domestic Patent References:
| WO2001093415A1 | 2001-12-06 |
Foreign References:
| US5952895A | 1999-09-14 | |||
| EP0961412A1 | 1999-12-01 |
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