A Ka-band microstrip reflectarray with elements having variable rotation angles

被引：430

作者：

Huang, J ^{[1
]}

Pogorzelski, RJ ^{[1
]}

机构：

[1] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 1998年 / 46卷 / 05期

基金：

美国国家航空航天局;

关键词：

circular polarization; microstrip element; reflectarray antenna; variable rotation angle;

D O I：

10.1109/8.668907

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper demonstrates a novel means of achieving cophasal far-field radiation for a circularly polarized microstrip reflectarray with elements having variable rotation angles. Two iia-band half-meter microstrip reflectarrays have been fabricated and tested. Both are believed to be the electrically largest reflectarrays ever developed using microstrip patches. One-a conventional design-has identical square patches with variable-length microstrip phase-delay lines attached. The other has identical square patches with identical microstrip phase-delay lines but different element rotation angles. Both antennas demonstrated excellent performance with more than 55% aperture efficiencies, but the one with variable rotation angles resulted in better overall performance. A brief mathematical analysis is presented to validate this "rotational element" approach. With this approach, a means of scanning the main beam of the reflectarray over a nide angular region without any RF beamfomer by using miniature or micromachined motors is viable.

引用

页码：650 / 656

页数：7

共 14 条

[1]

Berry D., 1963, IEEE Trans Antennas Propag, V11, P645, DOI 10.1109/TAP.1963.1138112

[2] MULTIPLE-POLARIZATION MICROSTRIP REFLECTARRAY ANTENNA WITH HIGH-EFFICIENCY AND LOW CROSS-POLARIZATION [J].

CHANG, DC ;

HUANG, MC .

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 1995, 43 (08) :829-834

[3] PHASE CORRECTING ZONAL REFLECTOR INCORPORATING RINGS [J].

GUO, YJ ;

BARTON, SK .

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 1995, 43 (04) :350-355

[4]

Huang J., 1995, IEEE Antennas and Propagation Society International Symposium. 1995 Digest (Cat. No.95CH35814), P582, DOI 10.1109/APS.1995.530086

[5]

Huang J., 1991, IEEE INT S ANT PROP, P612

[6]

Huang J., 1990, 9045 JPL

[7]

JAVOR RD, 1994, IEEE AP-S, P956, DOI 10.1109/APS.1994.407945

[8]

JOHANSSON FS, 1991, IEE PROC-H, V138, P273

[9]

KELKAR A, 1991, PROCEEDINGS OF THE 1991 IEEE NATIONAL RADAR CONFERENCE, P58, DOI 10.1109/NRC.1991.114725

[10]

MUNSON RE, 1987, Patent No. 4684952

← 1 2 →