Communications: radio wave antennas – Antennas – Microstrip
Patent
1995-10-19
1997-07-08
Wimer, Michael C.
Communications: radio wave antennas
Antennas
Microstrip
343718, 368 10, H01Q 138
Patent
active
056466340
ABSTRACT:
The invention concerns a linearly or circularly polarized antenna, comprising a dielectric substrate and a conductive element fixed on the dielectric substrate and being delimited at its periphery by an edge which confers to this element a double planar symmetry along two perpendicular axes. In one embodiment, the conductive element includes an excitation point located on a first axis and a first pair of slots which extends along the second of the axes from the periphery towards the center of the conductive element. In another embodiment, the conductive element includes an excitation point which is located on a third axis by bisecting the angle formed between the first and second axis and having two pair of slots which extend respectively along the first and second axis, from the periphery towards the center of the conductive element.
REFERENCES:
patent: 5307075 (1994-04-01), Huynh
"A Flat Energy Density Antenna System for Mobile Telephone", IEEE Transactions on Vehicular Technology, vol. 40, No. 2, May 1991, New York, pp. 483-486.
Bokhari Syed A.
Gardiol Freddy
Mosig Juan Ramon
Zurcher Jean-Fran.cedilla.ois
Asulab S.A.
Wimer Michael C.
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