Title :
A CPW-to-slotline active Gunn diode leaky wave antenna
Author :
Lee, S.H. ; Wu, J.J. ; Peng, S.T. ; Hu, C.C. ; Jou, C.F. ; Lee, C.P.
Author_Institution :
Inst. of Electron. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan
Abstract :
A X-band coplanar waveguide (CPW) to slotline couple feeding active microstrip leaky wave antenna using Gunn-diode oscillator as source is demonstrated. The method to excite the first higher order mode of the microstrip leaky wave antenna is to put the CPW-to-slotline transition underneath the middle of the microstrip line, and the oscillator circuit and radiating element are separated by a ground plane. The measured angle of the maximum beam direction of active antenna is at 72° for the active Gunn oscillator frequency of 11.218 GHz. This prototype of active leaky wave antenna feeding by Gunn diode oscillator with CPW-to-slotline structure can be easily scaled up to millimeter wave frequency region
Keywords :
Gunn oscillators; active antennas; antenna feeds; antenna radiation patterns; coplanar waveguide components; leaky wave antennas; microstrip antennas; microwave oscillators; slot line components; waveguide transitions; 11.218 GHz; CPW-to-slotline; CPW-to-slotline transition; SHF; X-band; active Gunn diode leaky wave antenna; coplanar waveguide; ground plane; higher order mode; microstrip line; oscillator circuit; radiating element; Antenna measurements; Coplanar waveguides; Coupling circuits; Diodes; Frequency; Gunn devices; Leaky wave antennas; Microstrip antennas; Oscillators; Slotline;
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.1998.768286
