Title :
Wideband integrated varactor-tunable active notch antennas and power combiners
Author :
Navarro, J.A. ; Shu, Y.-H. ; Chang, K.
Author_Institution :
Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA
Abstract :
A Gunn device in a varactor-tuned slotline coplanar waveguide (CPW) resonator has been integrated with a planar, endfire notch antenna. The varactor provides more than 14% tuning bandwidth centered at 9.6 GHz, with a power output of 14.5+or--0.8 dBm. Wideband tunable quasi-optical power combiners have also been developed using the active elements. The signal spectrum remains clean and very stable with nearly constant power output throughput the electronic tuning range. These results offer a simple, lightweight, low-cost, reproducible, and truly planar active wideband tunable source for many microwave applications.<>
Keywords :
Gunn devices; active antennas; microwave antennas; tuning; varactors; waveguide components; 9.6 GHz; Gunn device; electronic tuning range; endfire notch antenna; nearly constant power output; planar active wideband tunable source; planar antennas; power output; quasi-optical power combiners; signal spectrum; tuning bandwidth; varactor tuned slotline CPW resonator; varactor-tunable active notch antennas; varactor-tuned slotline coplanar waveguide; Bandwidth; Broadband antennas; Coplanar waveguides; Gunn devices; Planar waveguides; Power combiners; Slot antennas; Slotline; Varactors; Wideband;
Conference_Titel :
Microwave Symposium Digest, 1991., IEEE MTT-S International
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-87942-591-1
DOI :
10.1109/MWSYM.1991.147250
