DUAL MODE MULTI-SLOT EGPRS TRANSMITTER

Title:

DUAL MODE MULTI-SLOT EGPRS TRANSMITTER

Document Type and Number:

WIPO Patent Application WO2005025053

Kind Code:

A3

Abstract:

A method is disclosed to operate a dual mode multi-timeslot RF transmitter, as is an RF transmitter that includes a control unit (100) and a power amplifier (12) that operate in accordance with the method. The method includes, prior to a first timeslot, setting a plurality of control signals (1,2,3,4,5 and 6) for the RF transmitter in accordance with a first modulation format used during the first timeslot; and during a guard period between the first timeslot and a next, temporally adjacent timeslot, setting the plurality of control signals for the RF transmitter in accordance with a second modulation format used during the second timeslot, where the first modulation format differs from the second modulation format. The power amplifier (12) has a fixed gain mode and a variable gain mode used for the two modulation formats, respectively.

Inventors:

VAYRYNEN JUKKA (FI)
RAUHALA ANTTI H (FI)
MURTOJARVI SIMO (FI)

Application Number:

PCT/IB2004/002829

Publication Date:

June 30, 2005

Filing Date:

September 01, 2004

Export Citation:

Click for automatic bibliography generation Help

Assignee:

NOKIA CORP (FI)
NOKIA INC (US)
VAYRYNEN JUKKA (FI)
RAUHALA ANTTI H (FI)
MURTOJARVI SIMO (FI)

International Classes:

H03F1/02; H03F1/06; H03F1/32; H03G3/30; H04B1/40; H04B1/04; (IPC1-7): H04L27/04

Foreign References:

US20030160654A1	2003-08-28
US5216384A	1993-06-01

Other References: