Title :
Voltage Controlled Active Integrated Antennas
Author :
Kaleja, M.M. ; Grasberger, E. ; Biebl, E.M.
Author_Institution :
Lehrstuhl fÿr Hochfrequenztechnik, Technische Universitÿt Mÿnchen, Arcisstr. 21, 80333 Mÿnchen, Germany. Tel.: +49-89-289-23930; Fax: +49-89-289-25226; e-mail: kaleja@hft.ei.tum.de
Abstract :
The design and construction of voltage controlled active integrated antennas is discussed. Three different approaches based on varactor tuned active integrated antennas at 24 GHz consisting of a completely uniplanar microstrip structure with a flip-chip mounted HEMT are presented. Wide and small tuning ranges are realized and compared. The simulation uncertainty even using linear oscillator theory is below 2 % and the best approach shows no power variation over the tuning range.
Keywords :
Capacitance; Diodes; Electrical resistance measurement; Frequency; HEMTs; Microstrip antennas; Tuning; Varactors; Voltage control; Voltage-controlled oscillators;
Conference_Titel :
Microwave Conference, 1999. 29th European
Conference_Location :
Munich, Germany
DOI :
10.1109/EUMA.1999.338503
