Title :
24 GHz Low Power VCOs and Analog Frequency Dividers
Author :
Meliani, C. ; Lenk, F. ; Heinrich, W.
Author_Institution :
Ferdinand-Braun-Inst. fur Hoechstfrequenztechnik, Berlin
Abstract :
24 GHz VCOs and frequency dividers with very low power consumption are presented. The circuits are realized as GaAs HBT MMICs. They comprise a VCO with high efficiency >17% and 12% tuning range at only 18 mW DC consumption as well as several frequency dividers. In order to minimize power consumption, the latter use the injection-locked frequency-divider (ILFD) concept. Divider ratios of 2 and 4 are realized, power consumption as low as 25 mW for a divider-by-2 is achieved. This demonstrates the capabilities of the analog concept in realizing dividers for mm-wave frequencies at DC consumption levels far below their digital counterparts
Keywords :
III-V semiconductors; bipolar MMIC; frequency dividers; gallium arsenide; heterojunction bipolar transistors; low-power electronics; microwave oscillators; voltage-controlled oscillators; 18 mW; 24 GHz; GaAs; HBT MMIC; analog frequency dividers; injection locked frequency divider; low power VCO; mm-wave frequencies; Circuit optimization; Energy consumption; Frequency conversion; Gallium arsenide; Heterojunction bipolar transistors; MMICs; Radio frequency; Semiconductor process modeling; Tuning; Voltage-controlled oscillators; Injection Locked Frequency Divider; Low Power; VCO;
Conference_Titel :
Microwave Symposium Digest, 2006. IEEE MTT-S International
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-9541-7
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2006.249744
