Title :
Active Rectangular Patch Antenna with Push-Pull Oscillator
Author :
Davor Bonefacic;Juraj Bartolic;Zvonimir Sipus
Author_Institution :
University of Zagreb, Faculty of Electrical Engineering and Computing, Department of Radiocommnunications and Microwave Engineering, Unska 3, HR-10000 Zagreb, CROATIA. Phone: +385 1 6129 772
Abstract :
The paper presents a new design of an active self-oscillating patch antenna. To increase the power radiated by the antenna two bipolar transistors were embedded in a rectangular opening inside a rectangular patch. The transistors were placed along the resonant dimension and the spatial oscillator operated in push-pull mode. Frequency tuning has been obtained by changing transistor dc bias voltage. The dependence of the operatlng frequency and radiated power on bias voltage as well as radiation patterns and free running spectra have been measured.
Keywords :
"Patch antennas","Oscillators","Impedance","Resonance","Resonant frequency","Current distribution","Power generation","Voltage","Packaging","Antenna arrays"
Conference_Titel :
Microwave Conference, 1999. 29th European
DOI :
10.1109/EUMA.1999.338501
