Communications: radio wave antennas – Antennas – Microstrip
Patent
1982-09-24
1987-08-04
Blum, Theodore M.
Communications: radio wave antennas
Antennas
Microstrip
343754, 342368, H01Q 138
Patent
active
046849521
ABSTRACT:
A passive array of resonantly-dimensioned microstrip antenna radiator patches are closely spaced (i.e., less than one-tenth wavelength) above a ground plane and individually associated with transmission line segments terminated so as to cause the overall array to receive an incident r.f. electromagnetic field, to convert the received field into r.f. electrical currents which flow along the transmission lines and are absorbed by the terminations or reflected therefrom. In the latter case, the reflected r.f. energy is re-transmitted in a predetermined direction as a re-directed r.f. electromagnetic field. The presently preferred embodiment is a relatively thin, flexible and thus conformable layered structure formed by selectively etching conductive material from one side of a metallically cladded dielectric sheet. For satellite communication, a flat reflectarray may be associated with a primary r.f. transmitter/receiver structure disposed at a focal area or spot of the reflectarray having an appropriately phased aperture (e.g., parabolic). For radar cross-section enhancement or reduction, the reflectarray aperture is phased so as to retro-reflect incident r.f. fields or so as to scatter, otherwise misdirect or absorb (e.g., by using lossy resistive transmission line terminations) the incident r.f. field.
REFERENCES:
patent: Re29296 (1977-07-01), Krutsinger et al.
patent: Re29911 (1979-02-01), Munson
patent: 3408653 (1968-10-01), Blass
patent: 3713162 (1973-01-01), Munson et al.
patent: 3810183 (1974-05-01), Krutsinger et al.
patent: 3811128 (1974-05-01), Munson
patent: 3921177 (1975-11-01), Munson
patent: 3938161 (1976-02-01), Sanford
patent: 3971032 (1976-07-01), Munson et al.
patent: 4012741 (1977-03-01), Johnson
patent: 4051477 (1977-09-01), Murphy et al.
patent: 4070676 (1978-01-01), Sanford
patent: 4079268 (1978-03-01), Fletcher et al.
patent: 4110751 (1978-08-01), Reggia et al.
patent: 4131894 (1978-12-01), Schiavone
patent: 4180817 (1979-12-01), Sanford
patent: 4220956 (1980-09-01), Sanford
patent: 4233607 (1980-11-01), Sanford et al.
patent: 4259670 (1981-03-01), Schiavone
patent: 4287518 (1981-09-01), Ellis, Jr.
patent: 4320401 (1982-03-01), Schiavone
patent: 4320404 (1982-03-01), Chekroun
patent: 4358771 (1982-11-01), Hsieh
patent: 4445121 (1984-04-01), Hancock et al.
M. I. Skolnik, "Introduction to Radar Systems", McGraw-Hill, 1980, pp. 308-309.
M. I. Skolnik, "Radar Handbook", Chapter II, Array Antennas, by Theodore C. Cheston and Joe Frank, McGraw-Hill, 1970, pp. 11-54 through 11-60.
G. T. Ruck, D. E. Barrick, W. D. Stuart and C. K. Krichbaum, "Radar Cross-Section Handbook", vols. 1 and 2, Plenum Press, New York, 1970, pp. 585-670.
H. Jasik, "Antenna Engineering Handbook", Chapter 13, by W. C. Jakes and S. D. Robertson, McGraw-Hill, 1961, pp. 13-1 through 13-14.
Haddad Hussain A.
Hanlen John W.
Munson Robert E.
Alberding Gilbert E.
Ball Corporation
Blum Theodore M.
Sotomayor John B.
LandOfFree
Microstrip reflectarray for satellite communication and radar cr does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Microstrip reflectarray for satellite communication and radar cr, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Microstrip reflectarray for satellite communication and radar cr will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-886308