Disk-shaped antenna with polarization adjustment arrangement

Details Disk-shaped antenna with polarization adjustment arrangement Disk-shaped antenna with polarization adjustment arrangement

2005-10-18

2005-10-18

Le, Hoanganh (Department: 2821)

Communications: radio wave antennas

Antennas

Microstrip

C343S846000, C343S713000

Reexamination Certificate

active

06956529

ABSTRACT:
The present invention is to provide a disk-shaped antenna comprising a ring-shaped metal loop and a ground metal face respectively on top and bottom of a substrate, wherein a center hole is provided in each of the substrate and the ground metal face, a central conductor of a coaxial is inserted through the holes and connected to at least one rotatable metal band on the top of the substrate, two ends of the metal band are adapted to contact the metal loop, and braided outside conductor of the coaxial contacts the ground metal face. Thus, an angle between two metal bands is adapted to change by rotating one about the other for adjusting current loop and potential difference in an electric field perpendicular to the plane of the metal loop, thereby controlling the spiral of electromagnetic wave transmitted from the disk-shaped antenna.

REFERENCES:
patent: 6795024 (2004-09-01), Gottwald et al.
patent: 6809686 (2004-10-01), Du et al.
patent: 6812902 (2004-11-01), Rossman et al.
patent: 2004/0263392 (2004-12-01), Bisiules et al.

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