Title :
A calibratable 4.8-5.8 GHz MMIC vector modulator with low power consumption for smart antenna receivers
Author :
Ellinger, F. ; Lott, U. ; Bachtold, W.
Author_Institution :
Lab. for Electromagn. Fields & Microwave Electron., Swiss Fed. Inst. of Technol., Zurich, Switzerland
Abstract :
A highly integrated 4.8-5.8 GHz vector modulator MMIC using a 0.6 /spl mu/m GaAs MESFET foundry process is presented. Variable gain amplifiers with amplitude control ranges of 35 dB are applied to enable continuous amplitude and phase control of 15 dB and 360/spl deg/ by combining three vectors with phase offsets of 120/spl deg/. Maximum gain is 0 dB. The maximum current consumption using a 2.7 V voltage supply is only 3.2 mA. A calibration procedure is proposed to significantly improve the yield and the operation bandwidth.
Keywords :
Adaptive antenna arrays; Calibration; Field effect MMIC; Gallium arsenide; III-V semiconductors; Integrated circuit yield; MESFET integrated circuits; MMIC; Modulators; Wireless LAN; 0.6 micron; 2.7 V; 3.2 mA; 4.8 to 5.8 GHz; GaAs; MESFET foundry process; MMIC vector modulator; amplitude control ranges; calibration procedure; continuous amplitude control; continuous phase control; maximum current consumption; operation bandwidth; phase offsets; power consumption; smart antenna receivers; variable gain amplifiers; yield; Calibration; Circuits; Energy consumption; FETs; Gain; MMICs; Phase control; Receivers; Receiving antennas; Voltage control;
Conference_Titel :
Microwave Symposium Digest. 2000 IEEE MTT-S International
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-7803-5687-X
DOI :
10.1109/MWSYM.2000.861753
