Communications: radio wave antennas – Antennas – Microstrip
Patent
1988-04-01
1990-02-20
Hille, Rolf
Communications: radio wave antennas
Antennas
Microstrip
343829, H01Q 138
Patent
active
049030337
ABSTRACT:
A microwave-frequency microstrip antenna (10) simultaneously usable for both transmitting and receiving microwave-frequency signals that have dual orthogonally polarized components. The components may be either linearly or circularly polarized. A radiating patch (26) is mounted on a first dielectric (12). A ground plane (20) abuts the first dielectric (12) and has two elongated coupling apertures (32,31) at right angles to each other. A second dielectric (22) abuts the ground plane (20) and has embedded thereon two substantially identical conductive planar feed networks (52,51) that are disposed at right angles to each other. At least one additional optional dielectric layer (16,18) having a conductive patch (36,34) may be interposed between the first dielectric (12) and the ground plane (20) for purposes of broadening the bandwidth of the antenna (10). A meanderline polarizer (45) or a 3 dB 90.degree. hybrid coupler (40) may be used for converting from linear polarization to circular polarization.
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Dietrich Fred J.
Hwang Yeongming
Kilburg Francis J.
Tsao Chich-Hsing
Ford Aerospace Corporation
Hille Rolf
Radlo Edward J.
Radlo Edwrad
Wimer Michael C.
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