DocumentCode :
2346147
Title :
A 1 V, 8 GHz CMOS integrated phase shifted transmitter for wideband and varying envelope communication systems
Author :
Hamedi-Hagh, Sotoudeh ; Salama, C.A.T.
Author_Institution :
Dept. of Electr. & Comput. Eng., Toronto Univ., Ont., Canada
fYear :
2003
fDate :
21-24 Sept. 2003
Firstpage :
447
Lastpage :
450
Abstract :
A novel fully integrated phase shifted (PS) transmitter is presented in this paper. The PS transmitter employs switching power amplifiers, operates without mixers and provides an intermodulation distortion free output spectrum making it a suitable choice for mobile communication systems. The RF blocks of the PS transmitter include a local oscillator, phase shifters, switching class F power amplifiers and wideband output combiners. The PS transmitter is implemented in a standard 0.18 μm CMOS technology, with 1 level of polysilicon and 6 levels of metallization, and occupies an area of 5000×1000 μm2. It operates from a 1 V supply and provides 35 dBc adjacent channel power ratio for output bandwidths up to 50 MHz at 8 GHz. The combined class F PAs in the PS transmitter provide 20 dBm output power with a 38% power added efficiency.
Keywords :
CMOS integrated circuits; MMIC oscillators; MMIC phase shifters; MMIC power amplifiers; cellular radio; field effect MMIC; power combiners; 0.18 micron; 1 V; 1000 micron; 38 percent; 50 MHz; 5000 micron; 8 GHz; CMOS integrated phase shifted transmitter; CMOS technology; PS transmitter; RF blocks; adjacent channel power ratio; intermodulation distortion free output spectrum; local oscillator; metallization; mobile communication systems; output bandwidths; output power; phase shifters; polysilicon level; power added efficiency; switching class F power amplifiers; switching power amplifiers; varying envelope communication systems; wideband communication systems; wideband output combiners; Broadband amplifiers; CMOS technology; Communication switching; Intermodulation distortion; Mobile communication; Power amplifiers; Radio frequency; Radiofrequency amplifiers; Transmitters; Wideband;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Custom Integrated Circuits Conference, 2003. Proceedings of the IEEE 2003
Print_ISBN :
0-7803-7842-3
Type :
conf
DOI :
10.1109/CICC.2003.1249437
Filename :
1249437
Link To Document :
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