Title :
A 0.13µm CMOS ΔΣ PLL FM transmitter
Author :
Wu, Ying ; Liu, Xiaodong ; Ye, Dawei ; Viswam, Vijay ; Zhu, Lin ; Lu, Ping ; Radjen, Dejan ; Sjoland, Henrik
Author_Institution :
Dept. of Electr. & Inf. Technol., Lund Univ., Lund, Sweden
Abstract :
A short range FM transmitter is presented. It uses an architecture where the output frequency of a phase locked loop (PLL) is modulated by varying the division number of the feedback divider, using the 1-bit output of a ΔΣ ADC. The measured total harmonic distortion (THD) plus noise is less than 1% at 75 kHz deviation. The transmitter is fully integrated in a 0.13μm CMOS process and the core area is 0.24 mm2. The current consumption is 4.4mA from a 1.2V supply.
Keywords :
delta-sigma modulation; phase locked loops; radio transmitters; CMOS delta sigma PLL FM transmitter; CMOS process; current 4.4 mA; feedback divider; frequency 7 kHz; phase locked loop; short range FM transmitter; size 0.13 mum; total harmonic distortion; voltage 1.2 V; CMOS integrated circuits; Switches; Timing; Transfer functions;
Conference_Titel :
NORCHIP, 2011
Conference_Location :
Lund
Print_ISBN :
978-1-4577-0514-4
Electronic_ISBN :
978-1-4577-0515-1
DOI :
10.1109/NORCHP.2011.6126744
