Communications: directive radio wave systems and devices (e.g. – Directive – Including a steerable array
Patent
1992-02-10
1992-09-01
Barron, Jr., Gilberto
Communications: directive radio wave systems and devices (e.g.,
Directive
Including a steerable array
343700MS, G01S 324, H01Q 1324
Patent
active
051443201
ABSTRACT:
An antenna array includes several antenna elements, each having a microstrip transmission line which includes a strip conductor and a ground plane conductor separated by a dielectric substrate; an antenna portion of the substrate being adapted to enable energy within the substrate to radiate away from the microstrip transmission line. The substrate may have greater capacitance at the antenna portion than other portions of the substrate. The antenna portion is adapted to permit RF energy to the microstrip transmission line to be directionally radiated away from the microstrip transmission line at the antenna portion, the direction of radiation being a function of the frequency of the supplied energy and the antenna slot separation. The individual antenna elements are connected, preferably in pairs, to switching elements, preferably microstrip-type circulators, providing a switchable transmission path from an RF input to a selected antenna element. Each antenna element preferably provides a different radiated beam direction in response to a given input frequency. A desired beam direction can be selected by selecting a corresponding antenna element by means of the switching elements. Thus, by sequentially switching from one antenna to the next, electronic beam scanning can be accomplished without changing the frequency of the RF input.
REFERENCES:
patent: 4053895 (1977-10-01), Malagisi
patent: 4521781 (1985-06-01), Campi et al.
patent: 4754237 (1988-06-01), Stern et al.
patent: 4839659 (1989-06-01), Stern et al.
patent: 4933680 (1990-06-01), Shapiro et al.
Richard A. Stern and Richard W. Babbitt, "A MM-Wave Homogeneous Ferrite Pe Scan Antenna", Microwave Journal, Apr. 1987, pp. 101-108.
J. Borowick, W. Bayha, R. A. Stern, R. W. Babbitt, "Inertialess Scan Antenna Techniques for Millimeter Waves" 9th DARPA/Tri-MMWave Conference Record, 1981.
M. Collier, "Microstrip Antenna Array for 12 GHz TV", Microwave Journal, vol. 20, No. 9, pp. 67-71.
Babbitt Richard W.
Stern Richard A.
Anderson William H.
Barron Jr. Gilberto
The United States of America as represented by the Secretary of
Zelenka Michael
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