Title :
A low power bandpass /spl Sigma/ /spl Delta/ modulator injection locked synthesizer
Author :
Chung, Hoon Hee ; Lyles, Umar ; Copani, Tino ; Bakkaloglu, Bertan ; Kiaei, Sayfe
Author_Institution :
Dept. of Electr. Eng., Arizona State Univ., Tempe, AZ
Abstract :
A fully integrated 0.13-mum CMOS RFIC PLL transmitter for GFSK/GMSK modulation at 2.4-GHz ISM band is presented. A bandpass SigmaDelta direct digital frequency synthesized (BPSADDFS) reference oscillator is developed to provide a wideband RF PLL with a frequency modulated signal. The RF PLL-transmitter uses a single-bit bandpass SigmaDelta modulated injection locked oscillator as a reference signal. The measurement results show that the transmitter achieves a 0-dBm output power at 1-Mbit/sec data-rate when using a 0.5BT GFSK modulation. The ring oscillator VCO has a measured phase noise of -104dBc/Hz at 1-MHz offset from the RF carrier at 2.4GHz. The digital transmitter complies with Bluetooth Class 3 requirements and occupies 1.73mm2 silicon area
Keywords :
CMOS integrated circuits; UHF integrated circuits; UHF oscillators; digital phase locked loops; low-power electronics; phase locked loops; radio transmitters; radiofrequency integrated circuits; sigma-delta modulation; voltage-controlled oscillators; 0.13 micron; 2.4 GHz; BPSADDFS; Bluetooth Class 3; CMOS RFIC PLL transmitter; GFSK modulation; GMSK modulation; digital frequency synthesizer; digital transmitter; injection locked oscillator; injection locked synthesizer; phase noise; reference oscillator; ring oscillator; sigma-delta modulation; voltage controlled oscillator; Delta modulation; Frequency synthesizers; Injection-locked oscillators; Phase locked loops; RF signals; Radio frequency; Radiofrequency integrated circuits; Signal synthesis; Transmitters; Wideband;
Conference_Titel :
Radio Frequency Integrated Circuits (RFIC) Symposium, 2006 IEEE
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-9572-7
DOI :
10.1109/RFIC.2006.1651123
