Title :
Dynamically-configurable multimode transmitter systems for wireless handsets, cognitive radio and SDR applications
Author :
Harlan, Richard ; Rawlins, Greg ; Sorrells, David
Author_Institution :
ParkerVision, Inc., Jacksonville, FL, USA
Abstract :
A unified transmit chain for handsets, SDR, and cognitive radio addresses the need for an efficient low-cost multimode solution. The 65nm CMOS control block contains a small state machine that interprets IQ data inputs and selects settings from memory, which are based on characterization of the modulating device for the operating regime. Nonlinear functions map the desired output into control signals that manipulate a 130nm-SiGe vector-power-amplifier to construct a full-power RF waveform.
Keywords :
CMOS integrated circuits; Ge-Si alloys; UHF integrated circuits; UHF power amplifiers; cognitive radio; radio transmitters; software radio; CMOS control block; SiGe; UHF integrated circuits; cognitive radio; multimode transmitter systems; nonlinear functions; size 130 nm; size 65 nm; software defined radio; vector-power-amplifier; wireless handsets; 3G mobile communication; Cognitive radio; GSM; Microwave devices; Power amplifiers; Radio frequency; Radio transmitters; Rats; Telephone sets; Transceivers; Microwave modulation; UHF transmitters; VHF transmitters; microwave transmitters; military communication; mobile communication; nonlinear circuits; nonlinear functions; power amplifiers; radio transmitters; reconfigurable architectures;
Conference_Titel :
Microwaves, Communications, Antennas and Electronics Systems, 2009. COMCAS 2009. IEEE International Conference on
Conference_Location :
Tel Aviv
Print_ISBN :
978-1-4244-3985-0
DOI :
10.1109/COMCAS.2009.5385970
