Title :
Design and analysis of a current-reuse transmitter for ultra-low power applications
Author :
Zheng, Le ; Yao, Hsin-Cheng ; Tzeng, Fred ; Heydari, Payam
Author_Institution :
Nanoscale Commun. IC Lab., Univ. of California, Irvine, CA, USA
Abstract :
A CMOS current-reuse transmitter for ultra-low power (ULP) applications is presented. It can provide up to 10.2 dBm of output power with a total efficiency of 30% at 2.4 GHz. By utilizing the stacking technique, the average current of a class-E power amplifier is reused by the accompanying VCO and an optional RX block. The breakdown issue associated with the class-E PA is mitigated. A detailed analysis of the current-reuse structure is demonstrated. Practical design issues are discussed and appropriate design guidelines are provided.
Keywords :
CMOS integrated circuits; UHF oscillators; UHF power amplifiers; low-power electronics; radio transmitters; voltage-controlled oscillators; CMOS current-reuse transmitter; VCO; class-E power amplifier; frequency 2.4 GHz; optional RX block; stacking technique; ultra-low power applications; Circuits; Design optimization; Dynamic range; Electric breakdown; Low voltage; Power amplifiers; Power generation; Radio transmitters; Voltage-controlled oscillators; Wireless sensor networks;
Conference_Titel :
Circuits and Systems, 2009. ISCAS 2009. IEEE International Symposium on
Conference_Location :
Taipei
Print_ISBN :
978-1-4244-3827-3
Electronic_ISBN :
978-1-4244-3828-0
DOI :
10.1109/ISCAS.2009.5118006
