Title :
Grid-oscillator beam-steering array
Author :
Shijie Li ; Rutledge, D.B.
Author_Institution :
Dept. of Electr. Eng., California Inst. of Technol., Pasadena, CA, USA
Abstract :
Recently Liao and York (see IEEE Trans. Microwave Theory Tech., vol.41, no.10, p.1810, 1993) showed that beam-steering can be achieved by detuning the end elements of a coupled-oscillator array. The advantage of this approach is that no phase shifters are required. Liao and York used a single line array of patch antennas. Here we report the results for a pair of 1/spl times/4 HEMT line-grid oscillators at 11 GHz. This array can scan from -6.5/spl deg/ to +5/spl deg/ by changing the bias.<>
Keywords :
active antenna arrays; antenna radiation patterns; high electron mobility transistors; microstrip antenna arrays; microwave oscillators; scanning antennas; 1/spl times/4 HEMT line-grid oscillators; 11 GHz; bias; coupled-oscillator array; detuning; end elements; grid-oscillator beam-steering array; patch antennas; single line array; Antenna arrays; Beam steering; Equations; Frequency; HEMTs; Injection-locked oscillators; Microwave oscillators; Patch antennas; Phase shifters; Phased arrays;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1994. AP-S. Digest
Conference_Location :
Seattle, WA, USA
Print_ISBN :
0-7803-2009-3
DOI :
10.1109/APS.1994.407927
