Title :
Miniature Antenna as Optimal Load for High Efficiency Integrated Active UHF Microsystems
Author :
Serrano, R. ; Cairo, I. ; Capdevila, S. ; Blanch, S. ; Aguasca, A. ; Romeu, Jordi ; Jofre, L.
Author_Institution :
Univ. Politecnica de Catalunya, Barcelona
Abstract :
This paper describes an electrically small active antenna optimized to deliver the maximum power within 800-1000 MHz band, being implemented in CMOS technology. The antenna plays the roll of an optimum load for the active device (PA), minimizing the total size and improving the system performance. The proposed antenna as a stand-alone element, with dimensions of lambda0/15timeslambda0/15timeslambda 0/200, reaches efficiency values of 50% and bandwidth 14.5 MHz. Experimental results for the active element (PA) show a power-added efficiency (PAE) close to 30%. The PAE for the active antenna is measured by combining the calorimetric method with the measurement of the received power
Keywords :
CMOS integrated circuits; HF antennas; UHF antennas; active antennas; micromechanical devices; 14.5 MHz; CMOS technology; PAE; calorimetric method; electrically small active antenna; integrated active UHF microsystem; optimal load; power-added efficiency; Antenna measurements; Bandwidth; CMOS technology; Integrated circuit measurements; Loaded antennas; Packaging; Power amplifiers; Power measurement; Radar antennas; UHF antennas; Active antennas; monolithic integrated circuits; power amplifiers;
Conference_Titel :
Radar Conference, 2006. EuRAD 2006. 3rd European
Conference_Location :
Manchester
Print_ISBN :
2-9600551-7-9
DOI :
10.1109/EURAD.2006.280275
