Kaleja, Martin M.; Grasberger, E.; Biebl, Erwin M.
Voltage Controlled Active Integrated Antennas
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