DocumentCode
2145368
Title
Two-dimensional Unilaterally Coupled Active Antenna Arrays with Wide Angle Beam Scanning Capability
Author
Ispir, Ragip ; Nogi, Shigeji ; Sanagi, Minoru
Author_Institution
Department of Electrical and Electronic Engineering Okayama University, 700-8530, JAPAN. E-mail: ragip@apollo.micro.elec.okayama-u.ac.jp
Volume
1
fYear
1999
fDate
Oct. 1999
Firstpage
68
Lastpage
71
Abstract
A unilateral coupling scheme for twodimensional active antenna arrays was developed. Each oscillator is coupled to one of its neighbor oscillators unilaterally in a comb-like arrangement. The phase shifts along both axes of the array can be controlled by adjusting the frequency of only the back oscillators. Two paths, which are different in length and each contains an amplifier, were employed for unilateral coupling. Turning on the desired one out of two amplifiers, one can change the range in which the phase shift can be varied. In a 2×2 experimental oscillator array, the main beam could be scanned 40° in H-plane and 25° in E-plane totally.
Keywords
Antenna arrays; Frequency; Injection-locked oscillators; Microwave antenna arrays; Microwave oscillators; Mutual coupling; Optical coupling; Patch antennas; Phased arrays; Turning;
fLanguage
English
Publisher
ieee
Conference_Titel
Microwave Conference, 1999. 29th European
Conference_Location
Munich, Germany
Type
conf
DOI
10.1109/EUMA.1999.338342
Filename
4139369
Link To Document