Title :
A 5.2 GHz variable gain LNA MMIC for adaptive antenna combining
Author :
Ellinger, F. ; Lott, U. ; Bachtold, W.
Author_Institution :
Lab. for Electromagn. Fields & Microwave Electron., Fed. Inst. of Technol., Zurich, Switzerland
Abstract :
A variable gain LNA was designed for HIPERLAN I. A noise figure of only 1.7 dB is measured at a gain of 14.5 dB and a power consumption of 9 mW (V/sub DC/=3 V, I/sub DC/=3 mA). Over an amplitude control range of 20 dB, the third order intercept point at the input is higher than -10 dBm, the spurious free dynamic range is higher than 55 dB and noise performance does not effectively degrade. Noise and intermodulation performance of different amplitude control methods as well as the required resolutions for D/A converters are investigated.
Keywords :
MMIC amplifiers; adaptive antenna arrays; antenna accessories; field effect MMIC; gain control; integrated circuit design; integrated circuit noise; intermodulation; wireless LAN; 1.7 dB; 14.5 dB; 3 V; 3 mA; 5.2 GHz; 9 W; HIPERLAN I; adaptive antenna combining; amplitude control range; intermodulation performance; noise performance; variable gain LNA MMIC; Adaptive arrays; Antenna measurements; Dynamic range; Energy consumption; Gain measurement; MMICs; Noise figure; Noise level; Noise measurement; Power measurement;
Conference_Titel :
Microwave Symposium Digest, 1999 IEEE MTT-S International
Conference_Location :
Anaheim, CA, USA
Print_ISBN :
0-7803-5135-5
DOI :
10.1109/MWSYM.1999.779811
