Title :
Coplanar waveguide to coplanar strips fed active leaky-wave antenna
Author :
Hu, Cheng-Chi ; Jou, Christina F. ; Wang, Chien-Jen ; Lee, Shing-Horng ; Wu, Jin-Jei ; Peng, Song-tsuen
Author_Institution :
Dept. of Commun. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan
Abstract :
A new active coplanar waveguide (CPW) to coplanar strips (CPS) fed microstrip leaky-wave antenna is developed, which integrated with a Gunn diode as active source. The CPW-CPS balun is used to excite the first higher order mode of the microstrip leaky-wave antenna. The active leaky-wave antenna has maximum EIRP of 20.4 dBm at 9.759 GHz. The Gunn oscillator frequency is controlled by tuning the Gunn DC bias and the beam scanning is demonstrated. The measured scanning angle agrees with the prediction, it is close to 12° as the oscillator frequency is tuned from 9.84 GHz to 9.61 GHz. The coplanar structure allow easy integration of many solid-state devices. It is suitable for monolithic power combining and millimeter wave applications
Keywords :
Gunn oscillators; active antennas; antenna feeds; antenna radiation patterns; coplanar waveguide components; frequency control; leaky wave antennas; microstrip antennas; microwave oscillators; millimetre wave antennas; power combiners; scanning antennas; tuning; 9.61 to 9.84 GHz; CPW-to-coplanar strips feed; Gunn DC bias tuning; Gunn diode active source; Gunn oscillator frequency control; active leaky-wave antenna; beam scanning; coplanar waveguide; higher order mode; microstrip leaky-wave antenna; millimeter wave applications; monolithic power combining; Antenna measurements; Coplanar waveguides; Diodes; Frequency; Gunn devices; Impedance matching; Leaky wave antennas; Microstrip antennas; Oscillators; Tuning;
Conference_Titel :
Microwave and Millimeter Wave Technology Proceedings, 1998. ICMMT '98. 1998 International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-4308-5
DOI :
10.1109/ICMMT.1998.768287
