Communications: radio wave antennas – Antennas – Spiral or helical type
Patent
1997-03-25
1998-10-06
Le, Hoanganh T.
Communications: radio wave antennas
Antennas
Spiral or helical type
343702, 343873, H01Q 124, H01Q 136
Patent
active
058183981
ABSTRACT:
A surface mounting type antenna system 10 is formed by spirally winding a conductor 14 made of copper or copper alloy, with a power supply member 12 provided at one end of the conductor 14, the other end thereof being a free end 13, on the edge faces of a rectangular parallelepiped as a dielectric substrate 11 by printing, deposition, pasting or plating. The dielectric substrate 11 is prepared by stacking a plurality of layers of ceramics, resin or a combination of ceramics and resin. On the underside 111 of the dielectric substrate 11 lies a power supply terminal 15 to which the power supply member 12 of the conductor 14 is connected. The power supply terminal 15 is simultaneously used as a fixing terminal for securing the surface mounting type antenna system 10 to, for example, a mounting board. Moreover, the conductor 14 squarely intersecting the axis C of the conductor winding is rectangular in transverse cross section having a width of w and a length of l.
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J.P. Casey, et al., "Square Helical Antenna with a Dielectric Core", IEEE Transactions of Electromagnetic Compatability, vol. 30, No. 4, Nov. 1988, pp. 429-436.
Asakura Kenji
Mandai Haruhumi
Shiroki Koji
Tsuru Teruhisa
Le Hoanganh T.
Murata Mfg. Co. Ltd.
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